text: /* vi:set ts=8 sts=4 sw=4 noet:
   *
   * VIM - Vi IMproved	by Bram Moolenaar
   *
   * Do ":help uganda"  in Vim to read copying and usage conditions.
   * Do ":help credits" in Vim to see a list of people who contributed.
   * See README.txt for an overview of the Vim source code.
   */
  
  /*
   * ex_docmd.c: functions for executing an Ex command line.
   */
  
  #include "vim.h"
  
  static int	quitmore = 0;
  static int	ex_pressedreturn = FALSE;
  #ifndef FEAT_PRINTER
  # define ex_hardcopy	ex_ni
  #endif
  
  #ifdef FEAT_USR_CMDS
  typedef struct ucmd
  {
      char_u	*uc_name;	/* The command name */
      long_u	uc_argt;	/* The argument type */
      char_u	*uc_rep;	/* The command's replacement string */
      long	uc_def;		/* The default value for a range/count */
      int		uc_compl;	/* completion type */
      int		uc_addr_type;	/* The command's address type */
  # ifdef FEAT_EVAL
      scid_T	uc_scriptID;	/* SID where the command was defined */
  #  ifdef FEAT_CMDL_COMPL
      char_u	*uc_compl_arg;	/* completion argument if any */
  #  endif
  # endif
  } ucmd_T;
  
  #define UC_BUFFER	1	/* -buffer: local to current buffer */
  
  static garray_T ucmds = {0, 0, sizeof(ucmd_T), 4, NULL};
  
  #define USER_CMD(i) (&((ucmd_T *)(ucmds.ga_data))[i])
  #define USER_CMD_GA(gap, i) (&((ucmd_T *)((gap)->ga_data))[i])
  
  static void do_ucmd(exarg_T *eap);
  static void ex_command(exarg_T *eap);
  static void ex_delcommand(exarg_T *eap);
  # ifdef FEAT_CMDL_COMPL
  static char_u *get_user_command_name(int idx);
  # endif
  
  /* Wether a command index indicates a user command. */
  # define IS_USER_CMDIDX(idx) ((int)(idx) < 0)
  
  #else
  # define ex_command	ex_ni
  # define ex_comclear	ex_ni
  # define ex_delcommand	ex_ni
  /* Wether a command index indicates a user command. */
  # define IS_USER_CMDIDX(idx) (FALSE)
  #endif
  
  static int compute_buffer_local_count(int addr_type, int lnum, int local);
  #ifdef FEAT_EVAL
  static char_u	*do_one_cmd(char_u **, int, struct condstack *, char_u *(*fgetline)(int, void *, int), void *cookie);
  #else
  static char_u	*do_one_cmd(char_u **, int, char_u *(*fgetline)(int, void *, int), void *cookie);
  static int	if_level = 0;		/* depth in :if */
  #endif
  static void	append_command(char_u *cmd);
  static char_u	*find_command(exarg_T *eap, int *full);
  
  static void	ex_abbreviate(exarg_T *eap);
  static void	ex_map(exarg_T *eap);
  static void	ex_unmap(exarg_T *eap);
  static void	ex_mapclear(exarg_T *eap);
  static void	ex_abclear(exarg_T *eap);
  #ifndef FEAT_MENU
  # define ex_emenu		ex_ni
  # define ex_menu		ex_ni
  # define ex_menutranslate	ex_ni
  #endif
  #ifdef FEAT_AUTOCMD
  static void	ex_autocmd(exarg_T *eap);
  static void	ex_doautocmd(exarg_T *eap);
  #else
  # define ex_autocmd		ex_ni
  # define ex_doautocmd		ex_ni
  # define ex_doautoall		ex_ni
  #endif
  #ifdef FEAT_LISTCMDS
  static void	ex_bunload(exarg_T *eap);
  static void	ex_buffer(exarg_T *eap);
  static void	ex_bmodified(exarg_T *eap);
  static void	ex_bnext(exarg_T *eap);
  static void	ex_bprevious(exarg_T *eap);
  static void	ex_brewind(exarg_T *eap);
  static void	ex_blast(exarg_T *eap);
  #else
  # define ex_bunload		ex_ni
  # define ex_buffer		ex_ni
  # define ex_bmodified		ex_ni
  # define ex_bnext		ex_ni
  # define ex_bprevious		ex_ni
  # define ex_brewind		ex_ni
  # define ex_blast		ex_ni
  # define buflist_list		ex_ni
  # define ex_checktime		ex_ni
  #endif
  #if !defined(FEAT_LISTCMDS)
  # define ex_buffer_all		ex_ni
  #endif
  static char_u	*getargcmd(char_u **);
  static char_u	*skip_cmd_arg(char_u *p, int rembs);
  static int	getargopt(exarg_T *eap);
  #ifndef FEAT_QUICKFIX
  # define ex_make		ex_ni
  # define ex_cbuffer		ex_ni
  # define ex_cc			ex_ni
  # define ex_cnext		ex_ni
  # define ex_cfile		ex_ni
  # define qf_list		ex_ni
  # define qf_age			ex_ni
  # define qf_history		ex_ni
  # define ex_helpgrep		ex_ni
  # define ex_vimgrep		ex_ni
  #endif
  #if !defined(FEAT_QUICKFIX)
  # define ex_cclose		ex_ni
  # define ex_copen		ex_ni
  # define ex_cwindow		ex_ni
  # define ex_cbottom		ex_ni
  #endif
  #if !defined(FEAT_QUICKFIX) || !defined(FEAT_EVAL)
  # define ex_cexpr		ex_ni
  #endif
  
  static int	check_more(int, int);
  static linenr_T get_address(exarg_T *, char_u **, int addr_type, int skip, int to_other_file, int address_count);
  static void	get_flags(exarg_T *eap);
  #if !defined(FEAT_PERL) \
  	|| !defined(FEAT_PYTHON) || !defined(FEAT_PYTHON3) \
  	|| !defined(FEAT_TCL) \
  	|| !defined(FEAT_RUBY) \
  	|| !defined(FEAT_LUA) \
  	|| !defined(FEAT_MZSCHEME)
  # define HAVE_EX_SCRIPT_NI
  static void	ex_script_ni(exarg_T *eap);
  #endif
  static char_u	*invalid_range(exarg_T *eap);
  static void	correct_range(exarg_T *eap);
  #ifdef FEAT_QUICKFIX
  static char_u	*replace_makeprg(exarg_T *eap, char_u *p, char_u **cmdlinep);
  #endif
  static char_u	*repl_cmdline(exarg_T *eap, char_u *src, int srclen, char_u *repl, char_u **cmdlinep);
  static void	ex_highlight(exarg_T *eap);
  static void	ex_colorscheme(exarg_T *eap);
  static void	ex_quit(exarg_T *eap);
  static void	ex_cquit(exarg_T *eap);
  static void	ex_quit_all(exarg_T *eap);
  static void	ex_close(exarg_T *eap);
  static void	ex_win_close(int forceit, win_T *win, tabpage_T *tp);
  static void	ex_only(exarg_T *eap);
  static void	ex_resize(exarg_T *eap);
  static void	ex_stag(exarg_T *eap);
  static void	ex_tabclose(exarg_T *eap);
  static void	ex_tabonly(exarg_T *eap);
  static void	ex_tabnext(exarg_T *eap);
  static void	ex_tabmove(exarg_T *eap);
  static void	ex_tabs(exarg_T *eap);
  #if defined(FEAT_QUICKFIX)
  static void	ex_pclose(exarg_T *eap);
  static void	ex_ptag(exarg_T *eap);
  static void	ex_pedit(exarg_T *eap);
  #else
  # define ex_pclose		ex_ni
  # define ex_ptag		ex_ni
  # define ex_pedit		ex_ni
  #endif
  static void	ex_hide(exarg_T *eap);
  static void	ex_stop(exarg_T *eap);
  static void	ex_exit(exarg_T *eap);
  static void	ex_print(exarg_T *eap);
  #ifdef FEAT_BYTEOFF
  static void	ex_goto(exarg_T *eap);
  #else
  # define ex_goto		ex_ni
  #endif
  static void	ex_shell(exarg_T *eap);
  static void	ex_preserve(exarg_T *eap);
  static void	ex_recover(exarg_T *eap);
  #ifndef FEAT_LISTCMDS
  # define ex_argedit		ex_ni
  # define ex_argadd		ex_ni
  # define ex_argdelete		ex_ni
  # define ex_listdo		ex_ni
  #endif
  static void	ex_mode(exarg_T *eap);
  static void	ex_wrongmodifier(exarg_T *eap);
  static void	ex_find(exarg_T *eap);
  static void	ex_open(exarg_T *eap);
  static void	ex_edit(exarg_T *eap);
  #if !defined(FEAT_GUI) && !defined(FEAT_CLIENTSERVER)
  # define ex_drop		ex_ni
  #endif
  #ifndef FEAT_GUI
  # define ex_gui			ex_nogui
  static void	ex_nogui(exarg_T *eap);
  #endif
  #if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
  static void	ex_tearoff(exarg_T *eap);
  #else
  # define ex_tearoff		ex_ni
  #endif
  #if (defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_GTK)) && defined(FEAT_MENU)
  static void	ex_popup(exarg_T *eap);
  #else
  # define ex_popup		ex_ni
  #endif
  #ifndef FEAT_GUI_MSWIN
  # define ex_simalt		ex_ni
  #endif
  #if !defined(FEAT_GUI_MSWIN) && !defined(FEAT_GUI_GTK) && !defined(FEAT_GUI_MOTIF)
  # define gui_mch_find_dialog	ex_ni
  # define gui_mch_replace_dialog ex_ni
  #endif
  #if !defined(FEAT_GUI_GTK)
  # define ex_helpfind		ex_ni
  #endif
  #ifndef FEAT_CSCOPE
  # define ex_cscope		ex_ni
  # define ex_scscope		ex_ni
  # define ex_cstag		ex_ni
  #endif
  #ifndef FEAT_SYN_HL
  # define ex_syntax		ex_ni
  # define ex_ownsyntax		ex_ni
  #endif
  #if !defined(FEAT_SYN_HL) || !defined(FEAT_PROFILE)
  # define ex_syntime		ex_ni
  #endif
  #ifndef FEAT_SPELL
  # define ex_spell		ex_ni
  # define ex_mkspell		ex_ni
  # define ex_spelldump		ex_ni
  # define ex_spellinfo		ex_ni
  # define ex_spellrepall		ex_ni
  #endif
  #ifndef FEAT_PERSISTENT_UNDO
  # define ex_rundo		ex_ni
  # define ex_wundo		ex_ni
  #endif
  #ifndef FEAT_LUA
  # define ex_lua			ex_script_ni
  # define ex_luado		ex_ni
  # define ex_luafile		ex_ni
  #endif
  #ifndef FEAT_MZSCHEME
  # define ex_mzscheme		ex_script_ni
  # define ex_mzfile		ex_ni
  #endif
  #ifndef FEAT_PERL
  # define ex_perl		ex_script_ni
  # define ex_perldo		ex_ni
  #endif
  #ifndef FEAT_PYTHON
  # define ex_python		ex_script_ni
  # define ex_pydo		ex_ni
  # define ex_pyfile		ex_ni
  #endif
  #ifndef FEAT_PYTHON3
  # define ex_py3			ex_script_ni
  # define ex_py3do		ex_ni
  # define ex_py3file		ex_ni
  #endif
  #if !defined(FEAT_PYTHON) && !defined(FEAT_PYTHON3)
  # define ex_pyx			ex_script_ni
  # define ex_pyxdo		ex_ni
  # define ex_pyxfile		ex_ni
  #endif
  #ifndef FEAT_TCL
  # define ex_tcl			ex_script_ni
  # define ex_tcldo		ex_ni
  # define ex_tclfile		ex_ni
  #endif
  #ifndef FEAT_RUBY
  # define ex_ruby		ex_script_ni
  # define ex_rubydo		ex_ni
  # define ex_rubyfile		ex_ni
  #endif
  #ifndef FEAT_KEYMAP
  # define ex_loadkeymap		ex_ni
  #endif
  static void	ex_swapname(exarg_T *eap);
  static void	ex_syncbind(exarg_T *eap);
  static void	ex_read(exarg_T *eap);
  static void	ex_pwd(exarg_T *eap);
  static void	ex_equal(exarg_T *eap);
  static void	ex_sleep(exarg_T *eap);
  static void	do_exmap(exarg_T *eap, int isabbrev);
  static void	ex_winsize(exarg_T *eap);
  static void	ex_wincmd(exarg_T *eap);
  #if defined(FEAT_GUI) || defined(UNIX) || defined(VMS) || defined(MSWIN)
  static void	ex_winpos(exarg_T *eap);
  #else
  # define ex_winpos	    ex_ni
  #endif
  static void	ex_operators(exarg_T *eap);
  static void	ex_put(exarg_T *eap);
  static void	ex_copymove(exarg_T *eap);
  static void	ex_submagic(exarg_T *eap);
  static void	ex_join(exarg_T *eap);
  static void	ex_at(exarg_T *eap);
  static void	ex_bang(exarg_T *eap);
  static void	ex_undo(exarg_T *eap);
  #ifdef FEAT_PERSISTENT_UNDO
  static void	ex_wundo(exarg_T *eap);
  static void	ex_rundo(exarg_T *eap);
  #endif
  static void	ex_redo(exarg_T *eap);
  static void	ex_later(exarg_T *eap);
  static void	ex_redir(exarg_T *eap);
  static void	ex_redrawstatus(exarg_T *eap);
  static void	close_redir(void);
  static void	ex_mkrc(exarg_T *eap);
  static void	ex_mark(exarg_T *eap);
  #ifdef FEAT_USR_CMDS
  static char_u	*uc_fun_cmd(void);
  static char_u	*find_ucmd(exarg_T *eap, char_u *p, int *full, expand_T *xp, int *compl);
  #endif
  static void	ex_startinsert(exarg_T *eap);
  static void	ex_stopinsert(exarg_T *eap);
  #ifdef FEAT_FIND_ID
  static void	ex_checkpath(exarg_T *eap);
  static void	ex_findpat(exarg_T *eap);
  #else
  # define ex_findpat		ex_ni
  # define ex_checkpath		ex_ni
  #endif
  #if defined(FEAT_FIND_ID) && defined(FEAT_QUICKFIX)
  static void	ex_psearch(exarg_T *eap);
  #else
  # define ex_psearch		ex_ni
  #endif
  static void	ex_tag(exarg_T *eap);
  static void	ex_tag_cmd(exarg_T *eap, char_u *name);
  #ifndef FEAT_EVAL
  # define ex_scriptnames		ex_ni
  # define ex_finish		ex_ni
  # define ex_echo		ex_ni
  # define ex_echohl		ex_ni
  # define ex_execute		ex_ni
  # define ex_call		ex_ni
  # define ex_if			ex_ni
  # define ex_endif		ex_ni
  # define ex_else		ex_ni
  # define ex_while		ex_ni
  # define ex_continue		ex_ni
  # define ex_break		ex_ni
  # define ex_endwhile		ex_ni
  # define ex_throw		ex_ni
  # define ex_try			ex_ni
  # define ex_catch		ex_ni
  # define ex_finally		ex_ni
  # define ex_endtry		ex_ni
  # define ex_endfunction		ex_ni
  # define ex_let			ex_ni
  # define ex_unlet		ex_ni
  # define ex_lockvar		ex_ni
  # define ex_unlockvar		ex_ni
  # define ex_function		ex_ni
  # define ex_delfunction		ex_ni
  # define ex_return		ex_ni
  # define ex_oldfiles		ex_ni
  #endif
  static char_u	*arg_all(void);
  #ifdef FEAT_SESSION
  static int	makeopens(FILE *fd, char_u *dirnow);
  static int	put_view(FILE *fd, win_T *wp, int add_edit, unsigned *flagp, int current_arg_idx);
  static void	ex_loadview(exarg_T *eap);
  static char_u	*get_view_file(int c);
  static int	did_lcd;	/* whether ":lcd" was produced for a session */
  #else
  # define ex_loadview		ex_ni
  #endif
  #ifndef FEAT_EVAL
  # define ex_compiler		ex_ni
  #endif
  #ifdef FEAT_VIMINFO
  static void	ex_viminfo(exarg_T *eap);
  #else
  # define ex_viminfo		ex_ni
  #endif
  static void	ex_behave(exarg_T *eap);
  #ifdef FEAT_AUTOCMD
  static void	ex_filetype(exarg_T *eap);
  static void	ex_setfiletype(exarg_T *eap);
  #else
  # define ex_filetype		ex_ni
  # define ex_setfiletype		ex_ni
  #endif
  #ifndef FEAT_DIFF
  # define ex_diffoff		ex_ni
  # define ex_diffpatch		ex_ni
  # define ex_diffgetput		ex_ni
  # define ex_diffsplit		ex_ni
  # define ex_diffthis		ex_ni
  # define ex_diffupdate		ex_ni
  #endif
  static void	ex_digraphs(exarg_T *eap);
  static void	ex_set(exarg_T *eap);
  #if !defined(FEAT_EVAL) || !defined(FEAT_AUTOCMD)
  # define ex_options		ex_ni
  #endif
  #ifdef FEAT_SEARCH_EXTRA
  static void	ex_nohlsearch(exarg_T *eap);
  static void	ex_match(exarg_T *eap);
  #else
  # define ex_nohlsearch		ex_ni
  # define ex_match		ex_ni
  #endif
  #ifdef FEAT_CRYPT
  static void	ex_X(exarg_T *eap);
  #else
  # define ex_X			ex_ni
  #endif
  #ifdef FEAT_FOLDING
  static void	ex_fold(exarg_T *eap);
  static void	ex_foldopen(exarg_T *eap);
  static void	ex_folddo(exarg_T *eap);
  #else
  # define ex_fold		ex_ni
  # define ex_foldopen		ex_ni
  # define ex_folddo		ex_ni
  #endif
  #if !((defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
  	&& (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE)))
  # define ex_language		ex_ni
  #endif
  #ifndef FEAT_SIGNS
  # define ex_sign		ex_ni
  #endif
  #ifndef FEAT_SUN_WORKSHOP
  # define ex_wsverb		ex_ni
  #endif
  #ifndef FEAT_NETBEANS_INTG
  # define ex_nbclose		ex_ni
  # define ex_nbkey		ex_ni
  # define ex_nbstart		ex_ni
  #endif
  
  #ifndef FEAT_EVAL
  # define ex_debug		ex_ni
  # define ex_breakadd		ex_ni
  # define ex_debuggreedy		ex_ni
  # define ex_breakdel		ex_ni
  # define ex_breaklist		ex_ni
  #endif
  
  #ifndef FEAT_CMDHIST
  # define ex_history		ex_ni
  #endif
  #ifndef FEAT_JUMPLIST
  # define ex_jumps		ex_ni
  # define ex_clearjumps		ex_ni
  # define ex_changes		ex_ni
  #endif
  
  #ifndef FEAT_PROFILE
  # define ex_profile		ex_ni
  #endif
  #ifndef FEAT_TERMINAL
  # define ex_terminal		ex_ni
  #endif
  
  /*
   * Declare cmdnames[].
   */
  #define DO_DECLARE_EXCMD
  #include "ex_cmds.h"
  #include "ex_cmdidxs.h"
  
  static char_u dollar_command[2] = {'$', 0};
  
  
  #ifdef FEAT_EVAL
  /* Struct for storing a line inside a while/for loop */
  typedef struct
  {
      char_u	*line;		/* command line */
      linenr_T	lnum;		/* sourcing_lnum of the line */
  } wcmd_T;
  
  /*
   * Structure used to store info for line position in a while or for loop.
   * This is required, because do_one_cmd() may invoke ex_function(), which
   * reads more lines that may come from the while/for loop.
   */
  struct loop_cookie
  {
      garray_T	*lines_gap;		/* growarray with line info */
      int		current_line;		/* last read line from growarray */
      int		repeating;		/* TRUE when looping a second time */
      /* When "repeating" is FALSE use "getline" and "cookie" to get lines */
      char_u	*(*getline)(int, void *, int);
      void	*cookie;
  };
  
  static char_u	*get_loop_line(int c, void *cookie, int indent);
  static int	store_loop_line(garray_T *gap, char_u *line);
  static void	free_cmdlines(garray_T *gap);
  
  /* Struct to save a few things while debugging.  Used in do_cmdline() only. */
  struct dbg_stuff
  {
      int		trylevel;
      int		force_abort;
      except_T	*caught_stack;
      char_u	*vv_exception;
      char_u	*vv_throwpoint;
      int		did_emsg;
      int		got_int;
      int		did_throw;
      int		need_rethrow;
      int		check_cstack;
      except_T	*current_exception;
  };
  
  static void save_dbg_stuff(struct dbg_stuff *dsp);
  static void restore_dbg_stuff(struct dbg_stuff *dsp);
  
      static void
  save_dbg_stuff(struct dbg_stuff *dsp)
  {
      dsp->trylevel	= trylevel;		trylevel = 0;
      dsp->force_abort	= force_abort;		force_abort = FALSE;
      dsp->caught_stack	= caught_stack;		caught_stack = NULL;
      dsp->vv_exception	= v_exception(NULL);
      dsp->vv_throwpoint	= v_throwpoint(NULL);
  
      /* Necessary for debugging an inactive ":catch", ":finally", ":endtry" */
      dsp->did_emsg	= did_emsg;		did_emsg     = FALSE;
      dsp->got_int	= got_int;		got_int	     = FALSE;
      dsp->did_throw	= did_throw;		did_throw    = FALSE;
      dsp->need_rethrow	= need_rethrow;		need_rethrow = FALSE;
      dsp->check_cstack	= check_cstack;		check_cstack = FALSE;
      dsp->current_exception = current_exception;	current_exception = NULL;
  }
  
      static void
  restore_dbg_stuff(struct dbg_stuff *dsp)
  {
      suppress_errthrow = FALSE;
      trylevel = dsp->trylevel;
      force_abort = dsp->force_abort;
      caught_stack = dsp->caught_stack;
      (void)v_exception(dsp->vv_exception);
      (void)v_throwpoint(dsp->vv_throwpoint);
      did_emsg = dsp->did_emsg;
      got_int = dsp->got_int;
      did_throw = dsp->did_throw;
      need_rethrow = dsp->need_rethrow;
      check_cstack = dsp->check_cstack;
      current_exception = dsp->current_exception;
  }
  #endif
  
  /*
   * do_exmode(): Repeatedly get commands for the "Ex" mode, until the ":vi"
   * command is given.
   */
      void
  do_exmode(
      int		improved)	    /* TRUE for "improved Ex" mode */
  {
      int		save_msg_scroll;
      int		prev_msg_row;
      linenr_T	prev_line;
      varnumber_T	changedtick;
  
      if (improved)
  	exmode_active = EXMODE_VIM;
      else
  	exmode_active = EXMODE_NORMAL;
      State = NORMAL;
  
      /* When using ":global /pat/ visual" and then "Q" we return to continue
       * the :global command. */
      if (global_busy)
  	return;
  
      save_msg_scroll = msg_scroll;
      ++RedrawingDisabled;	    /* don't redisplay the window */
      ++no_wait_return;		    /* don't wait for return */
  #ifdef FEAT_GUI
      /* Ignore scrollbar and mouse events in Ex mode */
      ++hold_gui_events;
  #endif
  
      MSG(_("Entering Ex mode.  Type \"visual\" to go to Normal mode."));
      while (exmode_active)
      {
  	/* Check for a ":normal" command and no more characters left. */
  	if (ex_normal_busy > 0 && typebuf.tb_len == 0)
  	{
  	    exmode_active = FALSE;
  	    break;
  	}
  	msg_scroll = TRUE;
  	need_wait_return = FALSE;
  	ex_pressedreturn = FALSE;
  	ex_no_reprint = FALSE;
  	changedtick = CHANGEDTICK(curbuf);
  	prev_msg_row = msg_row;
  	prev_line = curwin->w_cursor.lnum;
  	if (improved)
  	{
  	    cmdline_row = msg_row;
  	    do_cmdline(NULL, getexline, NULL, 0);
  	}
  	else
  	    do_cmdline(NULL, getexmodeline, NULL, DOCMD_NOWAIT);
  	lines_left = Rows - 1;
  
  	if ((prev_line != curwin->w_cursor.lnum
  		   || changedtick != CHANGEDTICK(curbuf)) && !ex_no_reprint)
  	{
  	    if (curbuf->b_ml.ml_flags & ML_EMPTY)
  		EMSG(_(e_emptybuf));
  	    else
  	    {
  		if (ex_pressedreturn)
  		{
  		    /* go up one line, to overwrite the ":<CR>" line, so the
  		     * output doesn't contain empty lines. */
  		    msg_row = prev_msg_row;
  		    if (prev_msg_row == Rows - 1)
  			msg_row--;
  		}
  		msg_col = 0;
  		print_line_no_prefix(curwin->w_cursor.lnum, FALSE, FALSE);
  		msg_clr_eos();
  	    }
  	}
  	else if (ex_pressedreturn && !ex_no_reprint)	/* must be at EOF */
  	{
  	    if (curbuf->b_ml.ml_flags & ML_EMPTY)
  		EMSG(_(e_emptybuf));
  	    else
  		EMSG(_("E501: At end-of-file"));
  	}
      }
  
  #ifdef FEAT_GUI
      --hold_gui_events;
  #endif
      --RedrawingDisabled;
      --no_wait_return;
      update_screen(CLEAR);
      need_wait_return = FALSE;
      msg_scroll = save_msg_scroll;
  }
  
  /*
   * Execute a simple command line.  Used for translated commands like "*".
   */
      int
  do_cmdline_cmd(char_u *cmd)
  {
      return do_cmdline(cmd, NULL, NULL,
  				   DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
  }
  
  /*
   * do_cmdline(): execute one Ex command line
   *
   * 1. Execute "cmdline" when it is not NULL.
   *    If "cmdline" is NULL, or more lines are needed, fgetline() is used.
   * 2. Split up in parts separated with '|'.
   *
   * This function can be called recursively!
   *
   * flags:
   * DOCMD_VERBOSE  - The command will be included in the error message.
   * DOCMD_NOWAIT   - Don't call wait_return() and friends.
   * DOCMD_REPEAT   - Repeat execution until fgetline() returns NULL.
   * DOCMD_KEYTYPED - Don't reset KeyTyped.
   * DOCMD_EXCRESET - Reset the exception environment (used for debugging).
   * DOCMD_KEEPLINE - Store first typed line (for repeating with ".").
   *
   * return FAIL if cmdline could not be executed, OK otherwise
   */
      int
  do_cmdline(
      char_u	*cmdline,
      char_u	*(*fgetline)(int, void *, int),
      void	*cookie,		/* argument for fgetline() */
      int		flags)
  {
      char_u	*next_cmdline;		/* next cmd to execute */
      char_u	*cmdline_copy = NULL;	/* copy of cmd line */
      int		used_getline = FALSE;	/* used "fgetline" to obtain command */
      static int	recursive = 0;		/* recursive depth */
      int		msg_didout_before_start = 0;
      int		count = 0;		/* line number count */
      int		did_inc = FALSE;	/* incremented RedrawingDisabled */
      int		retval = OK;
  #ifdef FEAT_EVAL
      struct condstack cstack;		/* conditional stack */
      garray_T	lines_ga;		/* keep lines for ":while"/":for" */
      int		current_line = 0;	/* active line in lines_ga */
      char_u	*fname = NULL;		/* function or script name */
      linenr_T	*breakpoint = NULL;	/* ptr to breakpoint field in cookie */
      int		*dbg_tick = NULL;	/* ptr to dbg_tick field in cookie */
      struct dbg_stuff debug_saved;	/* saved things for debug mode */
      int		initial_trylevel;
      struct msglist	**saved_msg_list = NULL;
      struct msglist	*private_msg_list;
  
      /* "fgetline" and "cookie" passed to do_one_cmd() */
      char_u	*(*cmd_getline)(int, void *, int);
      void	*cmd_cookie;
      struct loop_cookie cmd_loop_cookie;
      void	*real_cookie;
      int		getline_is_func;
  #else
  # define cmd_getline fgetline
  # define cmd_cookie cookie
  #endif
      static int	call_depth = 0;		/* recursiveness */
  
  #ifdef FEAT_EVAL
      /* For every pair of do_cmdline()/do_one_cmd() calls, use an extra memory
       * location for storing error messages to be converted to an exception.
       * This ensures that the do_errthrow() call in do_one_cmd() does not
       * combine the messages stored by an earlier invocation of do_one_cmd()
       * with the command name of the later one.  This would happen when
       * BufWritePost autocommands are executed after a write error. */
      saved_msg_list = msg_list;
      msg_list = &private_msg_list;
      private_msg_list = NULL;
  #endif
  
      /* It's possible to create an endless loop with ":execute", catch that
       * here.  The value of 200 allows nested function calls, ":source", etc.
       * Allow 200 or 'maxfuncdepth', whatever is larger. */
      if (call_depth >= 200
  #ifdef FEAT_EVAL
  	    && call_depth >= p_mfd
  #endif
  	    )
      {
  	EMSG(_("E169: Command too recursive"));
  #ifdef FEAT_EVAL
  	/* When converting to an exception, we do not include the command name
  	 * since this is not an error of the specific command. */
  	do_errthrow((struct condstack *)NULL, (char_u *)NULL);
  	msg_list = saved_msg_list;
  #endif
  	return FAIL;
      }
      ++call_depth;
  
  #ifdef FEAT_EVAL
      cstack.cs_idx = -1;
      cstack.cs_looplevel = 0;
      cstack.cs_trylevel = 0;
      cstack.cs_emsg_silent_list = NULL;
      cstack.cs_lflags = 0;
      ga_init2(&lines_ga, (int)sizeof(wcmd_T), 10);
  
      real_cookie = getline_cookie(fgetline, cookie);
  
      /* Inside a function use a higher nesting level. */
      getline_is_func = getline_equal(fgetline, cookie, get_func_line);
      if (getline_is_func && ex_nesting_level == func_level(real_cookie))
  	++ex_nesting_level;
  
      /* Get the function or script name and the address where the next breakpoint
       * line and the debug tick for a function or script are stored. */
      if (getline_is_func)
      {
  	fname = func_name(real_cookie);
  	breakpoint = func_breakpoint(real_cookie);
  	dbg_tick = func_dbg_tick(real_cookie);
      }
      else if (getline_equal(fgetline, cookie, getsourceline))
      {
  	fname = sourcing_name;
  	breakpoint = source_breakpoint(real_cookie);
  	dbg_tick = source_dbg_tick(real_cookie);
      }
  
      /*
       * Initialize "force_abort"  and "suppress_errthrow" at the top level.
       */
      if (!recursive)
      {
  	force_abort = FALSE;
  	suppress_errthrow = FALSE;
      }
  
      /*
       * If requested, store and reset the global values controlling the
       * exception handling (used when debugging).  Otherwise clear it to avoid
       * a bogus compiler warning when the optimizer uses inline functions...
       */
      if (flags & DOCMD_EXCRESET)
  	save_dbg_stuff(&debug_saved);
      else
  	vim_memset(&debug_saved, 0, sizeof(debug_saved));
  
      initial_trylevel = trylevel;
  
      /*
       * "did_throw" will be set to TRUE when an exception is being thrown.
       */
      did_throw = FALSE;
  #endif
      /*
       * "did_emsg" will be set to TRUE when emsg() is used, in which case we
       * cancel the whole command line, and any if/endif or loop.
       * If force_abort is set, we cancel everything.
       */
      did_emsg = FALSE;
  
      /*
       * KeyTyped is only set when calling vgetc().  Reset it here when not
       * calling vgetc() (sourced command lines).
       */
      if (!(flags & DOCMD_KEYTYPED)
  			       && !getline_equal(fgetline, cookie, getexline))
  	KeyTyped = FALSE;
  
      /*
       * Continue executing command lines:
       * - when inside an ":if", ":while" or ":for"
       * - for multiple commands on one line, separated with '|'
       * - when repeating until there are no more lines (for ":source")
       */
      next_cmdline = cmdline;
      do
      {
  #ifdef FEAT_EVAL
  	getline_is_func = getline_equal(fgetline, cookie, get_func_line);
  #endif
  
  	/* stop skipping cmds for an error msg after all endif/while/for */
  	if (next_cmdline == NULL
  #ifdef FEAT_EVAL
  		&& !force_abort
  		&& cstack.cs_idx < 0
  		&& !(getline_is_func && func_has_abort(real_cookie))
  #endif
  							)
  	    did_emsg = FALSE;
  
  	/*
  	 * 1. If repeating a line in a loop, get a line from lines_ga.
  	 * 2. If no line given: Get an allocated line with fgetline().
  	 * 3. If a line is given: Make a copy, so we can mess with it.
  	 */
  
  #ifdef FEAT_EVAL
  	/* 1. If repeating, get a previous line from lines_ga. */
  	if (cstack.cs_looplevel > 0 && current_line < lines_ga.ga_len)
  	{
  	    /* Each '|' separated command is stored separately in lines_ga, to
  	     * be able to jump to it.  Don't use next_cmdline now. */
  	    vim_free(cmdline_copy);
  	    cmdline_copy = NULL;
  
  	    /* Check if a function has returned or, unless it has an unclosed
  	     * try conditional, aborted. */
  	    if (getline_is_func)
  	    {
  # ifdef FEAT_PROFILE
  		if (do_profiling == PROF_YES)
  		    func_line_end(real_cookie);
  # endif
  		if (func_has_ended(real_cookie))
  		{
  		    retval = FAIL;
  		    break;
  		}
  	    }
  #ifdef FEAT_PROFILE
  	    else if (do_profiling == PROF_YES
  			    && getline_equal(fgetline, cookie, getsourceline))
  		script_line_end();
  #endif
  
  	    /* Check if a sourced file hit a ":finish" command. */
  	    if (source_finished(fgetline, cookie))
  	    {
  		retval = FAIL;
  		break;
  	    }
  
  	    /* If breakpoints have been added/deleted need to check for it. */
  	    if (breakpoint != NULL && dbg_tick != NULL
  						   && *dbg_tick != debug_tick)
  	    {
  		*breakpoint = dbg_find_breakpoint(
  				getline_equal(fgetline, cookie, getsourceline),
  							fname, sourcing_lnum);
  		*dbg_tick = debug_tick;
  	    }
  
  	    next_cmdline = ((wcmd_T *)(lines_ga.ga_data))[current_line].line;
  	    sourcing_lnum = ((wcmd_T *)(lines_ga.ga_data))[current_line].lnum;
  
  	    /* Did we encounter a breakpoint? */
  	    if (breakpoint != NULL && *breakpoint != 0
  					      && *breakpoint <= sourcing_lnum)
  	    {
  		dbg_breakpoint(fname, sourcing_lnum);
  		/* Find next breakpoint. */
  		*breakpoint = dbg_find_breakpoint(
  			       getline_equal(fgetline, cookie, getsourceline),
  							fname, sourcing_lnum);
  		*dbg_tick = debug_tick;
  	    }
  # ifdef FEAT_PROFILE
  	    if (do_profiling == PROF_YES)
  	    {
  		if (getline_is_func)
  		    func_line_start(real_cookie);
  		else if (getline_equal(fgetline, cookie, getsourceline))
  		    script_line_start();
  	    }
  # endif
  	}
  
  	if (cstack.cs_looplevel > 0)
  	{
  	    /* Inside a while/for loop we need to store the lines and use them
  	     * again.  Pass a different "fgetline" function to do_one_cmd()
  	     * below, so that it stores lines in or reads them from
  	     * "lines_ga".  Makes it possible to define a function inside a
  	     * while/for loop. */
  	    cmd_getline = get_loop_line;
  	    cmd_cookie = (void *)&cmd_loop_cookie;
  	    cmd_loop_cookie.lines_gap = &lines_ga;
  	    cmd_loop_cookie.current_line = current_line;
  	    cmd_loop_cookie.getline = fgetline;
  	    cmd_loop_cookie.cookie = cookie;
  	    cmd_loop_cookie.repeating = (current_line < lines_ga.ga_len);
  	}
  	else
  	{
  	    cmd_getline = fgetline;
  	    cmd_cookie = cookie;
  	}
  #endif
  
  	/* 2. If no line given, get an allocated line with fgetline(). */
  	if (next_cmdline == NULL)
  	{
  	    /*
  	     * Need to set msg_didout for the first line after an ":if",
  	     * otherwise the ":if" will be overwritten.
  	     */
  	    if (count == 1 && getline_equal(fgetline, cookie, getexline))
  		msg_didout = TRUE;
  	    if (fgetline == NULL || (next_cmdline = fgetline(':', cookie,
  #ifdef FEAT_EVAL
  		    cstack.cs_idx < 0 ? 0 : (cstack.cs_idx + 1) * 2
  #else
  		    0
  #endif
  			    )) == NULL)
  	    {
  		/* Don't call wait_return for aborted command line.  The NULL
  		 * returned for the end of a sourced file or executed function
  		 * doesn't do this. */
  		if (KeyTyped && !(flags & DOCMD_REPEAT))
  		    need_wait_return = FALSE;
  		retval = FAIL;
  		break;
  	    }
  	    used_getline = TRUE;
  
  	    /*
  	     * Keep the first typed line.  Clear it when more lines are typed.
  	     */
  	    if (flags & DOCMD_KEEPLINE)
  	    {
  		vim_free(repeat_cmdline);
  		if (count == 0)
  		    repeat_cmdline = vim_strsave(next_cmdline);
  		else
  		    repeat_cmdline = NULL;
  	    }
  	}
  
  	/* 3. Make a copy of the command so we can mess with it. */
  	else if (cmdline_copy == NULL)
  	{
  	    next_cmdline = vim_strsave(next_cmdline);
  	    if (next_cmdline == NULL)
  	    {
  		EMSG(_(e_outofmem));
  		retval = FAIL;
  		break;
  	    }
  	}
  	cmdline_copy = next_cmdline;
  
  #ifdef FEAT_EVAL
  	/*
  	 * Save the current line when inside a ":while" or ":for", and when
  	 * the command looks like a ":while" or ":for", because we may need it
  	 * later.  When there is a '|' and another command, it is stored
  	 * separately, because we need to be able to jump back to it from an
  	 * :endwhile/:endfor.
  	 */
  	if (current_line == lines_ga.ga_len
  		&& (cstack.cs_looplevel || has_loop_cmd(next_cmdline)))
  	{
  	    if (store_loop_line(&lines_ga, next_cmdline) == FAIL)
  	    {
  		retval = FAIL;
  		break;
  	    }
  	}
  	did_endif = FALSE;
  #endif
  
  	if (count++ == 0)
  	{
  	    /*
  	     * All output from the commands is put below each other, without
  	     * waiting for a return. Don't do this when executing commands
  	     * from a script or when being called recursive (e.g. for ":e
  	     * +command file").
  	     */
  	    if (!(flags & DOCMD_NOWAIT) && !recursive)
  	    {
  		msg_didout_before_start = msg_didout;
  		msg_didany = FALSE; /* no output yet */
  		msg_start();
  		msg_scroll = TRUE;  /* put messages below each other */
  		++no_wait_return;   /* don't wait for return until finished */
  		++RedrawingDisabled;
  		did_inc = TRUE;
  	    }
  	}
  
  	if (p_verbose >= 15 && sourcing_name != NULL)
  	{
  	    ++no_wait_return;
  	    verbose_enter_scroll();
  
  	    smsg((char_u *)_("line %ld: %s"),
  					   (long)sourcing_lnum, cmdline_copy);
  	    if (msg_silent == 0)
  		msg_puts((char_u *)"\n");   /* don't overwrite this */
  
  	    verbose_leave_scroll();
  	    --no_wait_return;
  	}
  
  	/*
  	 * 2. Execute one '|' separated command.
  	 *    do_one_cmd() will return NULL if there is no trailing '|'.
  	 *    "cmdline_copy" can change, e.g. for '%' and '#' expansion.
  	 */
  	++recursive;
  	next_cmdline = do_one_cmd(&cmdline_copy, flags & DOCMD_VERBOSE,
  #ifdef FEAT_EVAL
  				&cstack,
  #endif
  				cmd_getline, cmd_cookie);
  	--recursive;
  
  #ifdef FEAT_EVAL
  	if (cmd_cookie == (void *)&cmd_loop_cookie)
  	    /* Use "current_line" from "cmd_loop_cookie", it may have been
  	     * incremented when defining a function. */
  	    current_line = cmd_loop_cookie.current_line;
  #endif
  
  	if (next_cmdline == NULL)
  	{
  	    vim_free(cmdline_copy);
  	    cmdline_copy = NULL;
  #ifdef FEAT_CMDHIST
  	    /*
  	     * If the command was typed, remember it for the ':' register.
  	     * Do this AFTER executing the command to make :@: work.
  	     */
  	    if (getline_equal(fgetline, cookie, getexline)
  						  && new_last_cmdline != NULL)
  	    {
  		vim_free(last_cmdline);
  		last_cmdline = new_last_cmdline;
  		new_last_cmdline = NULL;
  	    }
  #endif
  	}
  	else
  	{
  	    /* need to copy the command after the '|' to cmdline_copy, for the
  	     * next do_one_cmd() */
  	    STRMOVE(cmdline_copy, next_cmdline);
  	    next_cmdline = cmdline_copy;
  	}
  
  
  #ifdef FEAT_EVAL
  	/* reset did_emsg for a function that is not aborted by an error */
  	if (did_emsg && !force_abort
  		&& getline_equal(fgetline, cookie, get_func_line)
  					      && !func_has_abort(real_cookie))
  	    did_emsg = FALSE;
  
  	if (cstack.cs_looplevel > 0)
  	{
  	    ++current_line;
  
  	    /*
  	     * An ":endwhile", ":endfor" and ":continue" is handled here.
  	     * If we were executing commands, jump back to the ":while" or
  	     * ":for".
  	     * If we were not executing commands, decrement cs_looplevel.
  	     */
  	    if (cstack.cs_lflags & (CSL_HAD_CONT | CSL_HAD_ENDLOOP))
  	    {
  		cstack.cs_lflags &= ~(CSL_HAD_CONT | CSL_HAD_ENDLOOP);
  
  		/* Jump back to the matching ":while" or ":for".  Be careful
  		 * not to use a cs_line[] from an entry that isn't a ":while"
  		 * or ":for": It would make "current_line" invalid and can
  		 * cause a crash. */
  		if (!did_emsg && !got_int && !did_throw
  			&& cstack.cs_idx >= 0
  			&& (cstack.cs_flags[cstack.cs_idx]
  						      & (CSF_WHILE | CSF_FOR))
  			&& cstack.cs_line[cstack.cs_idx] >= 0
  			&& (cstack.cs_flags[cstack.cs_idx] & CSF_ACTIVE))
  		{
  		    current_line = cstack.cs_line[cstack.cs_idx];
  						/* remember we jumped there */
  		    cstack.cs_lflags |= CSL_HAD_LOOP;
  		    line_breakcheck();		/* check if CTRL-C typed */
  
  		    /* Check for the next breakpoint at or after the ":while"
  		     * or ":for". */
  		    if (breakpoint != NULL)
  		    {
  			*breakpoint = dbg_find_breakpoint(
  			       getline_equal(fgetline, cookie, getsourceline),
  									fname,
  			   ((wcmd_T *)lines_ga.ga_data)[current_line].lnum-1);
  			*dbg_tick = debug_tick;
  		    }
  		}
  		else
  		{
  		    /* can only get here with ":endwhile" or ":endfor" */
  		    if (cstack.cs_idx >= 0)
  			rewind_conditionals(&cstack, cstack.cs_idx - 1,
  				   CSF_WHILE | CSF_FOR, &cstack.cs_looplevel);
  		}
  	    }
  
  	    /*
  	     * For a ":while" or ":for" we need to remember the line number.
  	     */
  	    else if (cstack.cs_lflags & CSL_HAD_LOOP)
  	    {
  		cstack.cs_lflags &= ~CSL_HAD_LOOP;
  		cstack.cs_line[cstack.cs_idx] = current_line - 1;
  	    }
  	}
  
  	/*
  	 * When not inside any ":while" loop, clear remembered lines.
  	 */
  	if (cstack.cs_looplevel == 0)
  	{
  	    if (lines_ga.ga_len > 0)
  	    {
  		sourcing_lnum =
  		       ((wcmd_T *)lines_ga.ga_data)[lines_ga.ga_len - 1].lnum;
  		free_cmdlines(&lines_ga);
  	    }
  	    current_line = 0;
  	}
  
  	/*
  	 * A ":finally" makes did_emsg, got_int, and did_throw pending for
  	 * being restored at the ":endtry".  Reset them here and set the
  	 * ACTIVE and FINALLY flags, so that the finally clause gets executed.
  	 * This includes the case where a missing ":endif", ":endwhile" or
  	 * ":endfor" was detected by the ":finally" itself.
  	 */
  	if (cstack.cs_lflags & CSL_HAD_FINA)
  	{
  	    cstack.cs_lflags &= ~CSL_HAD_FINA;
  	    report_make_pending(cstack.cs_pending[cstack.cs_idx]
  		    & (CSTP_ERROR | CSTP_INTERRUPT | CSTP_THROW),
  		    did_throw ? (void *)current_exception : NULL);
  	    did_emsg = got_int = did_throw = FALSE;
  	    cstack.cs_flags[cstack.cs_idx] |= CSF_ACTIVE | CSF_FINALLY;
  	}
  
  	/* Update global "trylevel" for recursive calls to do_cmdline() from
  	 * within this loop. */
  	trylevel = initial_trylevel + cstack.cs_trylevel;
  
  	/*
  	 * If the outermost try conditional (across function calls and sourced
  	 * files) is aborted because of an error, an interrupt, or an uncaught
  	 * exception, cancel everything.  If it is left normally, reset
  	 * force_abort to get the non-EH compatible abortion behavior for
  	 * the rest of the script.
  	 */
  	if (trylevel == 0 && !did_emsg && !got_int && !did_throw)
  	    force_abort = FALSE;
  
  	/* Convert an interrupt to an exception if appropriate. */
  	(void)do_intthrow(&cstack);
  #endif /* FEAT_EVAL */
  
      }
      /*
       * Continue executing command lines when:
       * - no CTRL-C typed, no aborting error, no exception thrown or try
       *   conditionals need to be checked for executing finally clauses or
       *   catching an interrupt exception
       * - didn't get an error message or lines are not typed
       * - there is a command after '|', inside a :if, :while, :for or :try, or
       *   looping for ":source" command or function call.
       */
      while (!((got_int
  #ifdef FEAT_EVAL
  		    || (did_emsg && force_abort) || did_throw
  #endif
  	     )
  #ifdef FEAT_EVAL
  		&& cstack.cs_trylevel == 0
  #endif
  	    )
  	    && !(did_emsg
  #ifdef FEAT_EVAL
  		/* Keep going when inside try/catch, so that the error can be
  		 * deal with, except when it is a syntax error, it may cause
  		 * the :endtry to be missed. */
  		&& (cstack.cs_trylevel == 0 || did_emsg_syntax)
  #endif
  		&& used_getline
  			    && (getline_equal(fgetline, cookie, getexmodeline)
  			       || getline_equal(fgetline, cookie, getexline)))
  	    && (next_cmdline != NULL
  #ifdef FEAT_EVAL
  			|| cstack.cs_idx >= 0
  #endif
  			|| (flags & DOCMD_REPEAT)));
  
      vim_free(cmdline_copy);
      did_emsg_syntax = FALSE;
  #ifdef FEAT_EVAL
      free_cmdlines(&lines_ga);
      ga_clear(&lines_ga);
  
      if (cstack.cs_idx >= 0)
      {
  	/*
  	 * If a sourced file or executed function ran to its end, report the
  	 * unclosed conditional.
  	 */
  	if (!got_int && !did_throw
  		&& ((getline_equal(fgetline, cookie, getsourceline)
  			&& !source_finished(fgetline, cookie))
  		    || (getline_equal(fgetline, cookie, get_func_line)
  					    && !func_has_ended(real_cookie))))
  	{
  	    if (cstack.cs_flags[cstack.cs_idx] & CSF_TRY)
  		EMSG(_(e_endtry));
  	    else if (cstack.cs_flags[cstack.cs_idx] & CSF_WHILE)
  		EMSG(_(e_endwhile));
  	    else if (cstack.cs_flags[cstack.cs_idx] & CSF_FOR)
  		EMSG(_(e_endfor));
  	    else
  		EMSG(_(e_endif));
  	}
  
  	/*
  	 * Reset "trylevel" in case of a ":finish" or ":return" or a missing
  	 * ":endtry" in a sourced file or executed function.  If the try
  	 * conditional is in its finally clause, ignore anything pending.
  	 * If it is in a catch clause, finish the caught exception.
  	 * Also cleanup any "cs_forinfo" structures.
  	 */
  	do
  	{
  	    int idx = cleanup_conditionals(&cstack, 0, TRUE);
  
  	    if (idx >= 0)
  		--idx;	    /* remove try block not in its finally clause */
  	    rewind_conditionals(&cstack, idx, CSF_WHILE | CSF_FOR,
  							&cstack.cs_looplevel);
  	}
  	while (cstack.cs_idx >= 0);
  	trylevel = initial_trylevel;
      }
  
      /* If a missing ":endtry", ":endwhile", ":endfor", or ":endif" or a memory
       * lack was reported above and the error message is to be converted to an
       * exception, do this now after rewinding the cstack. */
      do_errthrow(&cstack, getline_equal(fgetline, cookie, get_func_line)
  				  ? (char_u *)"endfunction" : (char_u *)NULL);
  
      if (trylevel == 0)
      {
  	/*
  	 * When an exception is being thrown out of the outermost try
  	 * conditional, discard the uncaught exception, disable the conversion
  	 * of interrupts or errors to exceptions, and ensure that no more
  	 * commands are executed.
  	 */
  	if (did_throw)
  	{
  	    void	*p = NULL;
  	    char_u	*saved_sourcing_name;
  	    int		saved_sourcing_lnum;
  	    struct msglist	*messages = NULL, *next;
  
  	    /*
  	     * If the uncaught exception is a user exception, report it as an
  	     * error.  If it is an error exception, display the saved error
  	     * message now.  For an interrupt exception, do nothing; the
  	     * interrupt message is given elsewhere.
  	     */
  	    switch (current_exception->type)
  	    {
  		case ET_USER:
  		    vim_snprintf((char *)IObuff, IOSIZE,
  			    _("E605: Exception not caught: %s"),
  			    current_exception->value);
  		    p = vim_strsave(IObuff);
  		    break;
  		case ET_ERROR:
  		    messages = current_exception->messages;
  		    current_exception->messages = NULL;
  		    break;
  		case ET_INTERRUPT:
  		    break;
  	    }
  
  	    saved_sourcing_name = sourcing_name;
  	    saved_sourcing_lnum = sourcing_lnum;
  	    sourcing_name = current_exception->throw_name;
  	    sourcing_lnum = current_exception->throw_lnum;
  	    current_exception->throw_name = NULL;
  
  	    discard_current_exception();	/* uses IObuff if 'verbose' */
  	    suppress_errthrow = TRUE;
  	    force_abort = TRUE;
  
  	    if (messages != NULL)
  	    {
  		do
  		{
  		    next = messages->next;
  		    emsg(messages->msg);
  		    vim_free(messages->msg);
  		    vim_free(messages);
  		    messages = next;
  		}
  		while (messages != NULL);
  	    }
  	    else if (p != NULL)
  	    {
  		emsg(p);
  		vim_free(p);
  	    }
  	    vim_free(sourcing_name);
  	    sourcing_name = saved_sourcing_name;
  	    sourcing_lnum = saved_sourcing_lnum;
  	}
  
  	/*
  	 * On an interrupt or an aborting error not converted to an exception,
  	 * disable the conversion of errors to exceptions.  (Interrupts are not
  	 * converted any more, here.) This enables also the interrupt message
  	 * when force_abort is set and did_emsg unset in case of an interrupt
  	 * from a finally clause after an error.
  	 */
  	else if (got_int || (did_emsg && force_abort))
  	    suppress_errthrow = TRUE;
      }
  
      /*
       * The current cstack will be freed when do_cmdline() returns.  An uncaught
       * exception will have to be rethrown in the previous cstack.  If a function
       * has just returned or a script file was just finished and the previous
       * cstack belongs to the same function or, respectively, script file, it
       * will have to be checked for finally clauses to be executed due to the
       * ":return" or ":finish".  This is done in do_one_cmd().
       */
      if (did_throw)
  	need_rethrow = TRUE;
      if ((getline_equal(fgetline, cookie, getsourceline)
  		&& ex_nesting_level > source_level(real_cookie))
  	    || (getline_equal(fgetline, cookie, get_func_line)
  		&& ex_nesting_level > func_level(real_cookie) + 1))
      {
  	if (!did_throw)
  	    check_cstack = TRUE;
      }
      else
      {
  	/* When leaving a function, reduce nesting level. */
  	if (getline_equal(fgetline, cookie, get_func_line))
  	    --ex_nesting_level;
  	/*
  	 * Go to debug mode when returning from a function in which we are
  	 * single-stepping.
  	 */
  	if ((getline_equal(fgetline, cookie, getsourceline)
  		    || getline_equal(fgetline, cookie, get_func_line))
  		&& ex_nesting_level + 1 <= debug_break_level)
  	    do_debug(getline_equal(fgetline, cookie, getsourceline)
  		    ? (char_u *)_("End of sourced file")
  		    : (char_u *)_("End of function"));
      }
  
      /*
       * Restore the exception environment (done after returning from the
       * debugger).
       */
      if (flags & DOCMD_EXCRESET)
  	restore_dbg_stuff(&debug_saved);
  
      msg_list = saved_msg_list;
  #endif /* FEAT_EVAL */
  
      /*
       * If there was too much output to fit on the command line, ask the user to
       * hit return before redrawing the screen. With the ":global" command we do
       * this only once after the command is finished.
       */
      if (did_inc)
      {
  	--RedrawingDisabled;
  	--no_wait_return;
  	msg_scroll = FALSE;
  
  	/*
  	 * When just finished an ":if"-":else" which was typed, no need to
  	 * wait for hit-return.  Also for an error situation.
  	 */
  	if (retval == FAIL
  #ifdef FEAT_EVAL
  		|| (did_endif && KeyTyped && !did_emsg)
  #endif
  					    )
  	{
  	    need_wait_return = FALSE;
  	    msg_didany = FALSE;		/* don't wait when restarting edit */
  	}
  	else if (need_wait_return)
  	{
  	    /*
  	     * The msg_start() above clears msg_didout. The wait_return we do
  	     * here should not overwrite the command that may be shown before
  	     * doing that.
  	     */
  	    msg_didout |= msg_didout_before_start;
  	    wait_return(FALSE);
  	}
      }
  
  #ifdef FEAT_EVAL
      did_endif = FALSE;  /* in case do_cmdline used recursively */
  #else
      /*
       * Reset if_level, in case a sourced script file contains more ":if" than
       * ":endif" (could be ":if x | foo | endif").
       */
      if_level = 0;
  #endif
  
      --call_depth;
      return retval;
  }
  
  #ifdef FEAT_EVAL
  /*
   * Obtain a line when inside a ":while" or ":for" loop.
   */
      static char_u *
  get_loop_line(int c, void *cookie, int indent)
  {
      struct loop_cookie	*cp = (struct loop_cookie *)cookie;
      wcmd_T		*wp;
      char_u		*line;
  
      if (cp->current_line + 1 >= cp->lines_gap->ga_len)
      {
  	if (cp->repeating)
  	    return NULL;	/* trying to read past ":endwhile"/":endfor" */
  
  	/* First time inside the ":while"/":for": get line normally. */
  	if (cp->getline == NULL)
  	    line = getcmdline(c, 0L, indent);
  	else
  	    line = cp->getline(c, cp->cookie, indent);
  	if (line != NULL && store_loop_line(cp->lines_gap, line) == OK)
  	    ++cp->current_line;
  
  	return line;
      }
  
      KeyTyped = FALSE;
      ++cp->current_line;
      wp = (wcmd_T *)(cp->lines_gap->ga_data) + cp->current_line;
      sourcing_lnum = wp->lnum;
      return vim_strsave(wp->line);
  }
  
  /*
   * Store a line in "gap" so that a ":while" loop can execute it again.
   */
      static int
  store_loop_line(garray_T *gap, char_u *line)
  {
      if (ga_grow(gap, 1) == FAIL)
  	return FAIL;
      ((wcmd_T *)(gap->ga_data))[gap->ga_len].line = vim_strsave(line);
      ((wcmd_T *)(gap->ga_data))[gap->ga_len].lnum = sourcing_lnum;
      ++gap->ga_len;
      return OK;
  }
  
  /*
   * Free the lines stored for a ":while" or ":for" loop.
   */
      static void
  free_cmdlines(garray_T *gap)
  {
      while (gap->ga_len > 0)
      {
  	vim_free(((wcmd_T *)(gap->ga_data))[gap->ga_len - 1].line);
  	--gap->ga_len;
      }
  }
  #endif
  
  /*
   * If "fgetline" is get_loop_line(), return TRUE if the getline it uses equals
   * "func".  * Otherwise return TRUE when "fgetline" equals "func".
   */
      int
  getline_equal(
      char_u	*(*fgetline)(int, void *, int),
      void	*cookie UNUSED,		/* argument for fgetline() */
      char_u	*(*func)(int, void *, int))
  {
  #ifdef FEAT_EVAL
      char_u		*(*gp)(int, void *, int);
      struct loop_cookie *cp;
  
      /* When "fgetline" is "get_loop_line()" use the "cookie" to find the
       * function that's originally used to obtain the lines.  This may be
       * nested several levels. */
      gp = fgetline;
      cp = (struct loop_cookie *)cookie;
      while (gp == get_loop_line)
      {
  	gp = cp->getline;
  	cp = cp->cookie;
      }
      return gp == func;
  #else
      return fgetline == func;
  #endif
  }
  
  #if defined(FEAT_EVAL) || defined(FEAT_MBYTE) || defined(PROTO)
  /*
   * If "fgetline" is get_loop_line(), return the cookie used by the original
   * getline function.  Otherwise return "cookie".
   */
      void *
  getline_cookie(
      char_u	*(*fgetline)(int, void *, int) UNUSED,
      void	*cookie)		/* argument for fgetline() */
  {
  # ifdef FEAT_EVAL
      char_u		*(*gp)(int, void *, int);
      struct loop_cookie *cp;
  
      /* When "fgetline" is "get_loop_line()" use the "cookie" to find the
       * cookie that's originally used to obtain the lines.  This may be nested
       * several levels. */
      gp = fgetline;
      cp = (struct loop_cookie *)cookie;
      while (gp == get_loop_line)
      {
  	gp = cp->getline;
  	cp = cp->cookie;
      }
      return cp;
  # else
      return cookie;
  # endif
  }
  #endif
  
  
  /*
   * Helper function to apply an offset for buffer commands, i.e. ":bdelete",
   * ":bwipeout", etc.
   * Returns the buffer number.
   */
      static int
  compute_buffer_local_count(int addr_type, int lnum, int offset)
  {
      buf_T   *buf;
      buf_T   *nextbuf;
      int     count = offset;
  
      buf = firstbuf;
      while (buf->b_next != NULL && buf->b_fnum < lnum)
  	buf = buf->b_next;
      while (count != 0)
      {
  	count += (offset < 0) ? 1 : -1;
  	nextbuf = (offset < 0) ? buf->b_prev : buf->b_next;
  	if (nextbuf == NULL)
  	    break;
  	buf = nextbuf;
  	if (addr_type == ADDR_LOADED_BUFFERS)
  	    /* skip over unloaded buffers */
  	    while (buf->b_ml.ml_mfp == NULL)
  	    {
  		nextbuf = (offset < 0) ? buf->b_prev : buf->b_next;
  		if (nextbuf == NULL)
  		    break;
  		buf = nextbuf;
  	    }
      }
      /* we might have gone too far, last buffer is not loadedd */
      if (addr_type == ADDR_LOADED_BUFFERS)
  	while (buf->b_ml.ml_mfp == NULL)
  	{
  	    nextbuf = (offset >= 0) ? buf->b_prev : buf->b_next;
  	    if (nextbuf == NULL)
  		break;
  	    buf = nextbuf;
  	}
      return buf->b_fnum;
  }
  
  static int current_win_nr(win_T *win);
  static int current_tab_nr(tabpage_T *tab);
  
      static int
  current_win_nr(win_T *win)
  {
      win_T	*wp;
      int		nr = 0;
  
      FOR_ALL_WINDOWS(wp)
      {
  	++nr;
  	if (wp == win)
  	    break;
      }
      return nr;
  }
  
      static int
  current_tab_nr(tabpage_T *tab)
  {
      tabpage_T	*tp;
      int		nr = 0;
  
      FOR_ALL_TABPAGES(tp)
      {
  	++nr;
  	if (tp == tab)
  	    break;
      }
      return nr;
  }
  
  # define CURRENT_WIN_NR current_win_nr(curwin)
  # define LAST_WIN_NR current_win_nr(NULL)
  # define CURRENT_TAB_NR current_tab_nr(curtab)
  # define LAST_TAB_NR current_tab_nr(NULL)
  
  /*
   * Execute one Ex command.
   *
   * If 'sourcing' is TRUE, the command will be included in the error message.
   *
   * 1. skip comment lines and leading space
   * 2. handle command modifiers
   * 3. find the command
   * 4. parse range
   * 5. Parse the command.
   * 6. parse arguments
   * 7. switch on command name
   *
   * Note: "fgetline" can be NULL.
   *
   * This function may be called recursively!
   */
  #if (_MSC_VER == 1200)
  /*
   * Avoid optimisation bug in VC++ version 6.0
   */
   #pragma optimize( "g", off )
  #endif
      static char_u *
  do_one_cmd(
      char_u		**cmdlinep,
      int			sourcing,
  #ifdef FEAT_EVAL
      struct condstack	*cstack,
  #endif
      char_u		*(*fgetline)(int, void *, int),
      void		*cookie)		/* argument for fgetline() */
  {
      char_u		*p;
      linenr_T		lnum;
      long		n;
      char_u		*errormsg = NULL;	/* error message */
      char_u		*after_modifier = NULL;
      exarg_T		ea;			/* Ex command arguments */
      long		verbose_save = -1;
      int			save_msg_scroll = msg_scroll;
      int			save_msg_silent = -1;
      int			did_esilent = 0;
  #ifdef HAVE_SANDBOX
      int			did_sandbox = FALSE;
  #endif
      cmdmod_T		save_cmdmod;
      int			ni;			/* set when Not Implemented */
      char_u		*cmd;
      int			address_count = 1;
  
      vim_memset(&ea, 0, sizeof(ea));
      ea.line1 = 1;
      ea.line2 = 1;
  #ifdef FEAT_EVAL
      ++ex_nesting_level;
  #endif
  
      /* When the last file has not been edited :q has to be typed twice. */
      if (quitmore
  #ifdef FEAT_EVAL
  	    /* avoid that a function call in 'statusline' does this */
  	    && !getline_equal(fgetline, cookie, get_func_line)
  #endif
  #ifdef FEAT_AUTOCMD
  	    /* avoid that an autocommand, e.g. QuitPre, does this */
  	    && !getline_equal(fgetline, cookie, getnextac)
  #endif
  	    )
  	--quitmore;
  
      /*
       * Reset browse, confirm, etc..  They are restored when returning, for
       * recursive calls.
       */
      save_cmdmod = cmdmod;
      vim_memset(&cmdmod, 0, sizeof(cmdmod));
  
      /* "#!anything" is handled like a comment. */
      if ((*cmdlinep)[0] == '#' && (*cmdlinep)[1] == '!')
  	goto doend;
  
      /*
       * Repeat until no more command modifiers are found.
       */
      ea.cmd = *cmdlinep;
      for (;;)
      {
  /*
   * 1. Skip comment lines and leading white space and colons.
   */
  	while (*ea.cmd == ' ' || *ea.cmd == '\t' || *ea.cmd == ':')
  	    ++ea.cmd;
  
  	/* in ex mode, an empty line works like :+ */
  	if (*ea.cmd == NUL && exmode_active
  			&& (getline_equal(fgetline, cookie, getexmodeline)
  			    || getline_equal(fgetline, cookie, getexline))
  			&& curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
  	{
  	    ea.cmd = (char_u *)"+";
  	    ex_pressedreturn = TRUE;
  	}
  
  	/* ignore comment and empty lines */
  	if (*ea.cmd == '"')
  	    goto doend;
  	if (*ea.cmd == NUL)
  	{
  	    ex_pressedreturn = TRUE;
  	    goto doend;
  	}
  
  /*
   * 2. Handle command modifiers.
   */
  	p = skip_range(ea.cmd, NULL);
  	switch (*p)
  	{
  	    /* When adding an entry, also modify cmd_exists(). */
  	    case 'a':	if (!checkforcmd(&ea.cmd, "aboveleft", 3))
  			    break;
  			cmdmod.split |= WSP_ABOVE;
  			continue;
  
  	    case 'b':	if (checkforcmd(&ea.cmd, "belowright", 3))
  			{
  			    cmdmod.split |= WSP_BELOW;
  			    continue;
  			}
  			if (checkforcmd(&ea.cmd, "browse", 3))
  			{
  #ifdef FEAT_BROWSE_CMD
  			    cmdmod.browse = TRUE;
  #endif
  			    continue;
  			}
  			if (!checkforcmd(&ea.cmd, "botright", 2))
  			    break;
  			cmdmod.split |= WSP_BOT;
  			continue;
  
  	    case 'c':	if (!checkforcmd(&ea.cmd, "confirm", 4))
  			    break;
  #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
  			cmdmod.confirm = TRUE;
  #endif
  			continue;
  
  	    case 'k':	if (checkforcmd(&ea.cmd, "keepmarks", 3))
  			{
  			    cmdmod.keepmarks = TRUE;
  			    continue;
  			}
  			if (checkforcmd(&ea.cmd, "keepalt", 5))
  			{
  			    cmdmod.keepalt = TRUE;
  			    continue;
  			}
  			if (checkforcmd(&ea.cmd, "keeppatterns", 5))
  			{
  			    cmdmod.keeppatterns = TRUE;
  			    continue;
  			}
  			if (!checkforcmd(&ea.cmd, "keepjumps", 5))
  			    break;
  			cmdmod.keepjumps = TRUE;
  			continue;
  
  	    case 'f':	/* only accept ":filter {pat} cmd" */
  			{
  			    char_u *reg_pat;
  
  			    if (!checkforcmd(&p, "filter", 4)
  						|| *p == NUL || ends_excmd(*p))
  				break;
  			    if (*p == '!')
  			    {
  				cmdmod.filter_force = TRUE;
  				p = skipwhite(p + 1);
  				if (*p == NUL || ends_excmd(*p))
  				    break;
  			    }
  			    p = skip_vimgrep_pat(p, &reg_pat, NULL);
  			    if (p == NULL || *p == NUL)
  				break;
  			    cmdmod.filter_regmatch.regprog =
  						vim_regcomp(reg_pat, RE_MAGIC);
  			    if (cmdmod.filter_regmatch.regprog == NULL)
  				break;
  			    ea.cmd = p;
  			    continue;
  			}
  
  			/* ":hide" and ":hide | cmd" are not modifiers */
  	    case 'h':	if (p != ea.cmd || !checkforcmd(&p, "hide", 3)
  					       || *p == NUL || ends_excmd(*p))
  			    break;
  			ea.cmd = p;
  			cmdmod.hide = TRUE;
  			continue;
  
  	    case 'l':	if (checkforcmd(&ea.cmd, "lockmarks", 3))
  			{
  			    cmdmod.lockmarks = TRUE;
  			    continue;
  			}
  
  			if (!checkforcmd(&ea.cmd, "leftabove", 5))
  			    break;
  			cmdmod.split |= WSP_ABOVE;
  			continue;
  
  	    case 'n':	if (checkforcmd(&ea.cmd, "noautocmd", 3))
  			{
  #ifdef FEAT_AUTOCMD
  			    if (cmdmod.save_ei == NULL)
  			    {
  				/* Set 'eventignore' to "all". Restore the
  				 * existing option value later. */
  				cmdmod.save_ei = vim_strsave(p_ei);
  				set_string_option_direct((char_u *)"ei", -1,
  					 (char_u *)"all", OPT_FREE, SID_NONE);
  			    }
  #endif
  			    continue;
  			}
  			if (!checkforcmd(&ea.cmd, "noswapfile", 3))
  			    break;
  			cmdmod.noswapfile = TRUE;
  			continue;
  
  	    case 'r':	if (!checkforcmd(&ea.cmd, "rightbelow", 6))
  			    break;
  			cmdmod.split |= WSP_BELOW;
  			continue;
  
  	    case 's':	if (checkforcmd(&ea.cmd, "sandbox", 3))
  			{
  #ifdef HAVE_SANDBOX
  			    if (!did_sandbox)
  				++sandbox;
  			    did_sandbox = TRUE;
  #endif
  			    continue;
  			}
  			if (!checkforcmd(&ea.cmd, "silent", 3))
  			    break;
  			if (save_msg_silent == -1)
  			    save_msg_silent = msg_silent;
  			++msg_silent;
  			if (*ea.cmd == '!' && !VIM_ISWHITE(ea.cmd[-1]))
  			{
  			    /* ":silent!", but not "silent !cmd" */
  			    ea.cmd = skipwhite(ea.cmd + 1);
  			    ++emsg_silent;
  			    ++did_esilent;
  			}
  			continue;
  
  	    case 't':	if (checkforcmd(&p, "tab", 3))
  			{
  			    long tabnr = get_address(&ea, &ea.cmd, ADDR_TABS,
  							    ea.skip, FALSE, 1);
  			    if (tabnr == MAXLNUM)
  				cmdmod.tab = tabpage_index(curtab) + 1;
  			    else
  			    {
  				if (tabnr < 0 || tabnr > LAST_TAB_NR)
  				{
  				    errormsg = (char_u *)_(e_invrange);
  				    goto doend;
  				}
  				cmdmod.tab = tabnr + 1;
  			    }
  			    ea.cmd = p;
  			    continue;
  			}
  			if (!checkforcmd(&ea.cmd, "topleft", 2))
  			    break;
  			cmdmod.split |= WSP_TOP;
  			continue;
  
  	    case 'u':	if (!checkforcmd(&ea.cmd, "unsilent", 3))
  			    break;
  			if (save_msg_silent == -1)
  			    save_msg_silent = msg_silent;
  			msg_silent = 0;
  			continue;
  
  	    case 'v':	if (checkforcmd(&ea.cmd, "vertical", 4))
  			{
  			    cmdmod.split |= WSP_VERT;
  			    continue;
  			}
  			if (!checkforcmd(&p, "verbose", 4))
  			    break;
  			if (verbose_save < 0)
  			    verbose_save = p_verbose;
  			if (vim_isdigit(*ea.cmd))
  			    p_verbose = atoi((char *)ea.cmd);
  			else
  			    p_verbose = 1;
  			ea.cmd = p;
  			continue;
  	}
  	break;
      }
      after_modifier = ea.cmd;
  
  #ifdef FEAT_EVAL
      ea.skip = did_emsg || got_int || did_throw || (cstack->cs_idx >= 0
  			 && !(cstack->cs_flags[cstack->cs_idx] & CSF_ACTIVE));
  #else
      ea.skip = (if_level > 0);
  #endif
  
  #ifdef FEAT_EVAL
  # ifdef FEAT_PROFILE
      /* Count this line for profiling if ea.skip is FALSE. */
      if (do_profiling == PROF_YES && !ea.skip)
      {
  	if (getline_equal(fgetline, cookie, get_func_line))
  	    func_line_exec(getline_cookie(fgetline, cookie));
  	else if (getline_equal(fgetline, cookie, getsourceline))
  	    script_line_exec();
      }
  #endif
  
      /* May go to debug mode.  If this happens and the ">quit" debug command is
       * used, throw an interrupt exception and skip the next command. */
      dbg_check_breakpoint(&ea);
      if (!ea.skip && got_int)
      {
  	ea.skip = TRUE;
  	(void)do_intthrow(cstack);
      }
  #endif
  
  /*
   * 3. Skip over the range to find the command.  Let "p" point to after it.
   *
   * We need the command to know what kind of range it uses.
   */
      cmd = ea.cmd;
      ea.cmd = skip_range(ea.cmd, NULL);
      if (*ea.cmd == '*' && vim_strchr(p_cpo, CPO_STAR) == NULL)
  	ea.cmd = skipwhite(ea.cmd + 1);
      p = find_command(&ea, NULL);
  
  /*
   * 4. parse a range specifier of the form: addr [,addr] [;addr] ..
   *
   * where 'addr' is:
   *
   * %	      (entire file)
   * $  [+-NUM]
   * 'x [+-NUM] (where x denotes a currently defined mark)
   * .  [+-NUM]
   * [+-NUM]..
   * NUM
   *
   * The ea.cmd pointer is updated to point to the first character following the
   * range spec. If an initial address is found, but no second, the upper bound
   * is equal to the lower.
   */
  
      /* ea.addr_type for user commands is set by find_ucmd */
      if (!IS_USER_CMDIDX(ea.cmdidx))
      {
  	if (ea.cmdidx != CMD_SIZE)
  	    ea.addr_type = cmdnames[(int)ea.cmdidx].cmd_addr_type;
  	else
  	    ea.addr_type = ADDR_LINES;
  
  	/* :wincmd range depends on the argument. */
  	if (ea.cmdidx == CMD_wincmd && p != NULL)
  	    get_wincmd_addr_type(skipwhite(p), &ea);
      }
  
      /* repeat for all ',' or ';' separated addresses */
      ea.cmd = cmd;
      for (;;)
      {
  	ea.line1 = ea.line2;
  	switch (ea.addr_type)
  	{
  	    case ADDR_LINES:
  		/* default is current line number */
  		ea.line2 = curwin->w_cursor.lnum;
  		break;
  	    case ADDR_WINDOWS:
  		ea.line2 = CURRENT_WIN_NR;
  		break;
  	    case ADDR_ARGUMENTS:
  		ea.line2 = curwin->w_arg_idx + 1;
  		if (ea.line2 > ARGCOUNT)
  		    ea.line2 = ARGCOUNT;
  		break;
  	    case ADDR_LOADED_BUFFERS:
  	    case ADDR_BUFFERS:
  		ea.line2 = curbuf->b_fnum;
  		break;
  	    case ADDR_TABS:
  		ea.line2 = CURRENT_TAB_NR;
  		break;
  	    case ADDR_TABS_RELATIVE:
  		ea.line2 = 1;
  		break;
  #ifdef FEAT_QUICKFIX
  	    case ADDR_QUICKFIX:
  		ea.line2 = qf_get_cur_valid_idx(&ea);
  		break;
  #endif
  	}
  	ea.cmd = skipwhite(ea.cmd);
  	lnum = get_address(&ea, &ea.cmd, ea.addr_type, ea.skip,
  					  ea.addr_count == 0, address_count++);
  	if (ea.cmd == NULL)		    /* error detected */
  	    goto doend;
  	if (lnum == MAXLNUM)
  	{
  	    if (*ea.cmd == '%')		    /* '%' - all lines */
  	    {
  		++ea.cmd;
  		switch (ea.addr_type)
  		{
  		    case ADDR_LINES:
  			ea.line1 = 1;
  			ea.line2 = curbuf->b_ml.ml_line_count;
  			break;
  		    case ADDR_LOADED_BUFFERS:
  			{
  			    buf_T	*buf = firstbuf;
  
  			    while (buf->b_next != NULL
  						  && buf->b_ml.ml_mfp == NULL)
  				buf = buf->b_next;
  			    ea.line1 = buf->b_fnum;
  			    buf = lastbuf;
  			    while (buf->b_prev != NULL
  						  && buf->b_ml.ml_mfp == NULL)
  				buf = buf->b_prev;
  			    ea.line2 = buf->b_fnum;
  			    break;
  			}
  		    case ADDR_BUFFERS:
  			ea.line1 = firstbuf->b_fnum;
  			ea.line2 = lastbuf->b_fnum;
  			break;
  		    case ADDR_WINDOWS:
  		    case ADDR_TABS:
  			if (IS_USER_CMDIDX(ea.cmdidx))
  			{
  			    ea.line1 = 1;
  			    ea.line2 = ea.addr_type == ADDR_WINDOWS
  						  ? LAST_WIN_NR : LAST_TAB_NR;
  			}
  			else
  			{
  			    /* there is no Vim command which uses '%' and
  			     * ADDR_WINDOWS or ADDR_TABS */
  			    errormsg = (char_u *)_(e_invrange);
  			    goto doend;
  			}
  			break;
  		    case ADDR_TABS_RELATIVE:
  			errormsg = (char_u *)_(e_invrange);
  			goto doend;
  			break;
  		    case ADDR_ARGUMENTS:
  			if (ARGCOUNT == 0)
  			    ea.line1 = ea.line2 = 0;
  			else
  			{
  			    ea.line1 = 1;
  			    ea.line2 = ARGCOUNT;
  			}
  			break;
  #ifdef FEAT_QUICKFIX
  		    case ADDR_QUICKFIX:
  			ea.line1 = 1;
  			ea.line2 = qf_get_size(&ea);
  			if (ea.line2 == 0)
  			    ea.line2 = 1;
  			break;
  #endif
  		}
  		++ea.addr_count;
  	    }
  					    /* '*' - visual area */
  	    else if (*ea.cmd == '*' && vim_strchr(p_cpo, CPO_STAR) == NULL)
  	    {
  		pos_T	    *fp;
  
  		if (ea.addr_type != ADDR_LINES)
  		{
  		    errormsg = (char_u *)_(e_invrange);
  		    goto doend;
  		}
  
  		++ea.cmd;
  		if (!ea.skip)
  		{
  		    fp = getmark('<', FALSE);
  		    if (check_mark(fp) == FAIL)
  			goto doend;
  		    ea.line1 = fp->lnum;
  		    fp = getmark('>', FALSE);
  		    if (check_mark(fp) == FAIL)
  			goto doend;
  		    ea.line2 = fp->lnum;
  		    ++ea.addr_count;
  		}
  	    }
  	}
  	else
  	    ea.line2 = lnum;
  	ea.addr_count++;
  
  	if (*ea.cmd == ';')
  	{
  	    if (!ea.skip)
  	    {
  		curwin->w_cursor.lnum = ea.line2;
  		/* don't leave the cursor on an illegal line or column */
  		check_cursor();
  	    }
  	}
  	else if (*ea.cmd != ',')
  	    break;
  	++ea.cmd;
      }
  
      /* One address given: set start and end lines */
      if (ea.addr_count == 1)
      {
  	ea.line1 = ea.line2;
  	    /* ... but only implicit: really no address given */
  	if (lnum == MAXLNUM)
  	    ea.addr_count = 0;
      }
  
  /*
   * 5. Parse the command.
   */
  
      /*
       * Skip ':' and any white space
       */
      ea.cmd = skipwhite(ea.cmd);
      while (*ea.cmd == ':')
  	ea.cmd = skipwhite(ea.cmd + 1);
  
      /*
       * If we got a line, but no command, then go to the line.
       * If we find a '|' or '\n' we set ea.nextcmd.
       */
      if (*ea.cmd == NUL || *ea.cmd == '"'
  			      || (ea.nextcmd = check_nextcmd(ea.cmd)) != NULL)
      {
  	/*
  	 * strange vi behaviour:
  	 * ":3"		jumps to line 3
  	 * ":3|..."	prints line 3
  	 * ":|"		prints current line
  	 */
  	if (ea.skip)	    /* skip this if inside :if */
  	    goto doend;
  	if (*ea.cmd == '|' || (exmode_active && ea.line1 != ea.line2))
  	{
  	    ea.cmdidx = CMD_print;
  	    ea.argt = RANGE+COUNT+TRLBAR;
  	    if ((errormsg = invalid_range(&ea)) == NULL)
  	    {
  		correct_range(&ea);
  		ex_print(&ea);
  	    }
  	}
  	else if (ea.addr_count != 0)
  	{
  	    if (ea.line2 > curbuf->b_ml.ml_line_count)
  	    {
  		/* With '-' in 'cpoptions' a line number past the file is an
  		 * error, otherwise put it at the end of the file. */
  		if (vim_strchr(p_cpo, CPO_MINUS) != NULL)
  		    ea.line2 = -1;
  		else
  		    ea.line2 = curbuf->b_ml.ml_line_count;
  	    }
  
  	    if (ea.line2 < 0)
  		errormsg = (char_u *)_(e_invrange);
  	    else
  	    {
  		if (ea.line2 == 0)
  		    curwin->w_cursor.lnum = 1;
  		else
  		    curwin->w_cursor.lnum = ea.line2;
  		beginline(BL_SOL | BL_FIX);
  	    }
  	}
  	goto doend;
      }
  
  #ifdef FEAT_AUTOCMD
      /* If this looks like an undefined user command and there are CmdUndefined
       * autocommands defined, trigger the matching autocommands. */
      if (p != NULL && ea.cmdidx == CMD_SIZE && !ea.skip
  	    && ASCII_ISUPPER(*ea.cmd)
  	    && has_cmdundefined())
      {
  	int ret;
  
  	p = ea.cmd;
  	while (ASCII_ISALNUM(*p))
  	    ++p;
  	p = vim_strnsave(ea.cmd, (int)(p - ea.cmd));
  	ret = apply_autocmds(EVENT_CMDUNDEFINED, p, p, TRUE, NULL);
  	vim_free(p);
  	/* If the autocommands did something and didn't cause an error, try
  	 * finding the command again. */
  	p = (ret && !aborting()) ? find_command(&ea, NULL) : ea.cmd;
      }
  #endif
  
  #ifdef FEAT_USR_CMDS
      if (p == NULL)
      {
  	if (!ea.skip)
  	    errormsg = (char_u *)_("E464: Ambiguous use of user-defined command");
  	goto doend;
      }
      /* Check for wrong commands. */
      if (*p == '!' && ea.cmd[1] == 0151 && ea.cmd[0] == 78
  	    && !IS_USER_CMDIDX(ea.cmdidx))
      {
  	errormsg = uc_fun_cmd();
  	goto doend;
      }
  #endif
      if (ea.cmdidx == CMD_SIZE)
      {
  	if (!ea.skip)
  	{
  	    STRCPY(IObuff, _("E492: Not an editor command"));
  	    if (!sourcing)
  	    {
  		/* If the modifier was parsed OK the error must be in the
  		 * following command */
  		if (after_modifier != NULL)
  		    append_command(after_modifier);
  		else
  		    append_command(*cmdlinep);
  	    }
  	    errormsg = IObuff;
  	    did_emsg_syntax = TRUE;
  	}
  	goto doend;
      }
  
      ni = (!IS_USER_CMDIDX(ea.cmdidx)
  	    && (cmdnames[ea.cmdidx].cmd_func == ex_ni
  #ifdef HAVE_EX_SCRIPT_NI
  	     || cmdnames[ea.cmdidx].cmd_func == ex_script_ni
  #endif
  	     ));
  
  #ifndef FEAT_EVAL
      /*
       * When the expression evaluation is disabled, recognize the ":if" and
       * ":endif" commands and ignore everything in between it.
       */
      if (ea.cmdidx == CMD_if)
  	++if_level;
      if (if_level)
      {
  	if (ea.cmdidx == CMD_endif)
  	    --if_level;
  	goto doend;
      }
  
  #endif
  
      /* forced commands */
      if (*p == '!' && ea.cmdidx != CMD_substitute
  	    && ea.cmdidx != CMD_smagic && ea.cmdidx != CMD_snomagic)
      {
  	++p;
  	ea.forceit = TRUE;
      }
      else
  	ea.forceit = FALSE;
  
  /*
   * 6. Parse arguments.
   */
      if (!IS_USER_CMDIDX(ea.cmdidx))
  	ea.argt = (long)cmdnames[(int)ea.cmdidx].cmd_argt;
  
      if (!ea.skip)
      {
  #ifdef HAVE_SANDBOX
  	if (sandbox != 0 && !(ea.argt & SBOXOK))
  	{
  	    /* Command not allowed in sandbox. */
  	    errormsg = (char_u *)_(e_sandbox);
  	    goto doend;
  	}
  #endif
  	if (!curbuf->b_p_ma && (ea.argt & MODIFY))
  	{
  	    /* Command not allowed in non-'modifiable' buffer */
  	    errormsg = (char_u *)_(e_modifiable);
  	    goto doend;
  	}
  
  	if (text_locked() && !(ea.argt & CMDWIN)
  		&& !IS_USER_CMDIDX(ea.cmdidx))
  	{
  	    /* Command not allowed when editing the command line. */
  	    errormsg = (char_u *)_(get_text_locked_msg());
  	    goto doend;
  	}
  #ifdef FEAT_AUTOCMD
  	/* Disallow editing another buffer when "curbuf_lock" is set.
  	 * Do allow ":edit" (check for argument later).
  	 * Do allow ":checktime" (it's postponed). */
  	if (!(ea.argt & CMDWIN)
  		&& ea.cmdidx != CMD_edit
  		&& ea.cmdidx != CMD_checktime
  		&& !IS_USER_CMDIDX(ea.cmdidx)
  		&& curbuf_locked())
  	    goto doend;
  #endif
  
  	if (!ni && !(ea.argt & RANGE) && ea.addr_count > 0)
  	{
  	    /* no range allowed */
  	    errormsg = (char_u *)_(e_norange);
  	    goto doend;
  	}
      }
  
      if (!ni && !(ea.argt & BANG) && ea.forceit)	/* no <!> allowed */
      {
  	errormsg = (char_u *)_(e_nobang);
  	goto doend;
      }
  
      /*
       * Don't complain about the range if it is not used
       * (could happen if line_count is accidentally set to 0).
       */
      if (!ea.skip && !ni)
      {
  	/*
  	 * If the range is backwards, ask for confirmation and, if given, swap
  	 * ea.line1 & ea.line2 so it's forwards again.
  	 * When global command is busy, don't ask, will fail below.
  	 */
  	if (!global_busy && ea.line1 > ea.line2)
  	{
  	    if (msg_silent == 0)
  	    {
  		if (sourcing || exmode_active)
  		{
  		    errormsg = (char_u *)_("E493: Backwards range given");
  		    goto doend;
  		}
  		if (ask_yesno((char_u *)
  			_("Backwards range given, OK to swap"), FALSE) != 'y')
  		    goto doend;
  	    }
  	    lnum = ea.line1;
  	    ea.line1 = ea.line2;
  	    ea.line2 = lnum;
  	}
  	if ((errormsg = invalid_range(&ea)) != NULL)
  	    goto doend;
      }
  
      if ((ea.argt & NOTADR) && ea.addr_count == 0) /* default is 1, not cursor */
  	ea.line2 = 1;
  
      correct_range(&ea);
  
  #ifdef FEAT_FOLDING
      if (((ea.argt & WHOLEFOLD) || ea.addr_count >= 2) && !global_busy
  	    && ea.addr_type == ADDR_LINES)
      {
  	/* Put the first line at the start of a closed fold, put the last line
  	 * at the end of a closed fold. */
  	(void)hasFolding(ea.line1, &ea.line1, NULL);
  	(void)hasFolding(ea.line2, NULL, &ea.line2);
      }
  #endif
  
  #ifdef FEAT_QUICKFIX
      /*
       * For the ":make" and ":grep" commands we insert the 'makeprg'/'grepprg'
       * option here, so things like % get expanded.
       */
      p = replace_makeprg(&ea, p, cmdlinep);
      if (p == NULL)
  	goto doend;
  #endif
  
      /*
       * Skip to start of argument.
       * Don't do this for the ":!" command, because ":!! -l" needs the space.
       */
      if (ea.cmdidx == CMD_bang)
  	ea.arg = p;
      else
  	ea.arg = skipwhite(p);
  
      /*
       * Check for "++opt=val" argument.
       * Must be first, allow ":w ++enc=utf8 !cmd"
       */
      if (ea.argt & ARGOPT)
  	while (ea.arg[0] == '+' && ea.arg[1] == '+')
  	    if (getargopt(&ea) == FAIL && !ni)
  	    {
  		errormsg = (char_u *)_(e_invarg);
  		goto doend;
  	    }
  
      if (ea.cmdidx == CMD_write || ea.cmdidx == CMD_update)
      {
  	if (*ea.arg == '>')			/* append */
  	{
  	    if (*++ea.arg != '>')		/* typed wrong */
  	    {
  		errormsg = (char_u *)_("E494: Use w or w>>");
  		goto doend;
  	    }
  	    ea.arg = skipwhite(ea.arg + 1);
  	    ea.append = TRUE;
  	}
  	else if (*ea.arg == '!' && ea.cmdidx == CMD_write)  /* :w !filter */
  	{
  	    ++ea.arg;
  	    ea.usefilter = TRUE;
  	}
      }
  
      if (ea.cmdidx == CMD_read)
      {
  	if (ea.forceit)
  	{
  	    ea.usefilter = TRUE;		/* :r! filter if ea.forceit */
  	    ea.forceit = FALSE;
  	}
  	else if (*ea.arg == '!')		/* :r !filter */
  	{
  	    ++ea.arg;
  	    ea.usefilter = TRUE;
  	}
      }
  
      if (ea.cmdidx == CMD_lshift || ea.cmdidx == CMD_rshift)
      {
  	ea.amount = 1;
  	while (*ea.arg == *ea.cmd)		/* count number of '>' or '<' */
  	{
  	    ++ea.arg;
  	    ++ea.amount;
  	}
  	ea.arg = skipwhite(ea.arg);
      }
  
      /*
       * Check for "+command" argument, before checking for next command.
       * Don't do this for ":read !cmd" and ":write !cmd".
       */
      if ((ea.argt & EDITCMD) && !ea.usefilter)
  	ea.do_ecmd_cmd = getargcmd(&ea.arg);
  
      /*
       * Check for '|' to separate commands and '"' to start comments.
       * Don't do this for ":read !cmd" and ":write !cmd".
       */
      if ((ea.argt & TRLBAR) && !ea.usefilter)
  	separate_nextcmd(&ea);
  
      /*
       * Check for <newline> to end a shell command.
       * Also do this for ":read !cmd", ":write !cmd" and ":global".
       * Any others?
       */
      else if (ea.cmdidx == CMD_bang
  	    || ea.cmdidx == CMD_terminal
  	    || ea.cmdidx == CMD_global
  	    || ea.cmdidx == CMD_vglobal
  	    || ea.usefilter)
      {
  	for (p = ea.arg; *p; ++p)
  	{
  	    /* Remove one backslash before a newline, so that it's possible to
  	     * pass a newline to the shell and also a newline that is preceded
  	     * with a backslash.  This makes it impossible to end a shell
  	     * command in a backslash, but that doesn't appear useful.
  	     * Halving the number of backslashes is incompatible with previous
  	     * versions. */
  	    if (*p == '\\' && p[1] == '\n')
  		STRMOVE(p, p + 1);
  	    else if (*p == '\n')
  	    {
  		ea.nextcmd = p + 1;
  		*p = NUL;
  		break;
  	    }
  	}
      }
  
      if ((ea.argt & DFLALL) && ea.addr_count == 0)
      {
  	buf_T	    *buf;
  
  	ea.line1 = 1;
  	switch (ea.addr_type)
  	{
  	    case ADDR_LINES:
  		ea.line2 = curbuf->b_ml.ml_line_count;
  		break;
  	    case ADDR_LOADED_BUFFERS:
  		buf = firstbuf;
  		while (buf->b_next != NULL && buf->b_ml.ml_mfp == NULL)
  		    buf = buf->b_next;
  		ea.line1 = buf->b_fnum;
  		buf = lastbuf;
  		while (buf->b_prev != NULL && buf->b_ml.ml_mfp == NULL)
  		    buf = buf->b_prev;
  		ea.line2 = buf->b_fnum;
  		break;
  	    case ADDR_BUFFERS:
  		ea.line1 = firstbuf->b_fnum;
  		ea.line2 = lastbuf->b_fnum;
  		break;
  	    case ADDR_WINDOWS:
  		ea.line2 = LAST_WIN_NR;
  		break;
  	    case ADDR_TABS:
  		ea.line2 = LAST_TAB_NR;
  		break;
  	    case ADDR_TABS_RELATIVE:
  		ea.line2 = 1;
  		break;
  	    case ADDR_ARGUMENTS:
  		if (ARGCOUNT == 0)
  		    ea.line1 = ea.line2 = 0;
  		else
  		    ea.line2 = ARGCOUNT;
  		break;
  #ifdef FEAT_QUICKFIX
  	    case ADDR_QUICKFIX:
  		ea.line2 = qf_get_size(&ea);
  		if (ea.line2 == 0)
  		    ea.line2 = 1;
  		break;
  #endif
  	}
      }
  
      /* accept numbered register only when no count allowed (:put) */
      if (       (ea.argt & REGSTR)
  	    && *ea.arg != NUL
  	       /* Do not allow register = for user commands */
  	    && (!IS_USER_CMDIDX(ea.cmdidx) || *ea.arg != '=')
  	    && !((ea.argt & COUNT) && VIM_ISDIGIT(*ea.arg)))
      {
  #ifndef FEAT_CLIPBOARD
  	/* check these explicitly for a more specific error message */
  	if (*ea.arg == '*' || *ea.arg == '+')
  	{
  	    errormsg = (char_u *)_(e_invalidreg);
  	    goto doend;
  	}
  #endif
  	if (valid_yank_reg(*ea.arg, (ea.cmdidx != CMD_put
  					      && !IS_USER_CMDIDX(ea.cmdidx))))
  	{
  	    ea.regname = *ea.arg++;
  #ifdef FEAT_EVAL
  	    /* for '=' register: accept the rest of the line as an expression */
  	    if (ea.arg[-1] == '=' && ea.arg[0] != NUL)
  	    {
  		set_expr_line(vim_strsave(ea.arg));
  		ea.arg += STRLEN(ea.arg);
  	    }
  #endif
  	    ea.arg = skipwhite(ea.arg);
  	}
      }
  
      /*
       * Check for a count.  When accepting a BUFNAME, don't use "123foo" as a
       * count, it's a buffer name.
       */
      if ((ea.argt & COUNT) && VIM_ISDIGIT(*ea.arg)
  	    && (!(ea.argt & BUFNAME) || *(p = skipdigits(ea.arg)) == NUL
  							  || VIM_ISWHITE(*p)))
      {
  	n = getdigits(&ea.arg);
  	ea.arg = skipwhite(ea.arg);
  	if (n <= 0 && !ni && (ea.argt & ZEROR) == 0)
  	{
  	    errormsg = (char_u *)_(e_zerocount);
  	    goto doend;
  	}
  	if (ea.argt & NOTADR)	/* e.g. :buffer 2, :sleep 3 */
  	{
  	    ea.line2 = n;
  	    if (ea.addr_count == 0)
  		ea.addr_count = 1;
  	}
  	else
  	{
  	    ea.line1 = ea.line2;
  	    ea.line2 += n - 1;
  	    ++ea.addr_count;
  	    /*
  	     * Be vi compatible: no error message for out of range.
  	     */
  	    if (ea.addr_type == ADDR_LINES
  		    && ea.line2 > curbuf->b_ml.ml_line_count)
  		ea.line2 = curbuf->b_ml.ml_line_count;
  	}
      }
  
      /*
       * Check for flags: 'l', 'p' and '#'.
       */
      if (ea.argt & EXFLAGS)
  	get_flags(&ea);
  						/* no arguments allowed */
      if (!ni && !(ea.argt & EXTRA) && *ea.arg != NUL
  	    && *ea.arg != '"' && (*ea.arg != '|' || (ea.argt & TRLBAR) == 0))
      {
  	errormsg = (char_u *)_(e_trailing);
  	goto doend;
      }
  
      if (!ni && (ea.argt & NEEDARG) && *ea.arg == NUL)
      {
  	errormsg = (char_u *)_(e_argreq);
  	goto doend;
      }
  
  #ifdef FEAT_EVAL
      /*
       * Skip the command when it's not going to be executed.
       * The commands like :if, :endif, etc. always need to be executed.
       * Also make an exception for commands that handle a trailing command
       * themselves.
       */
      if (ea.skip)
      {
  	switch (ea.cmdidx)
  	{
  	    /* commands that need evaluation */
  	    case CMD_while:
  	    case CMD_endwhile:
  	    case CMD_for:
  	    case CMD_endfor:
  	    case CMD_if:
  	    case CMD_elseif:
  	    case CMD_else:
  	    case CMD_endif:
  	    case CMD_try:
  	    case CMD_catch:
  	    case CMD_finally:
  	    case CMD_endtry:
  	    case CMD_function:
  				break;
  
  	    /* Commands that handle '|' themselves.  Check: A command should
  	     * either have the TRLBAR flag, appear in this list or appear in
  	     * the list at ":help :bar". */
  	    case CMD_aboveleft:
  	    case CMD_and:
  	    case CMD_belowright:
  	    case CMD_botright:
  	    case CMD_browse:
  	    case CMD_call:
  	    case CMD_confirm:
  	    case CMD_delfunction:
  	    case CMD_djump:
  	    case CMD_dlist:
  	    case CMD_dsearch:
  	    case CMD_dsplit:
  	    case CMD_echo:
  	    case CMD_echoerr:
  	    case CMD_echomsg:
  	    case CMD_echon:
  	    case CMD_execute:
  	    case CMD_filter:
  	    case CMD_help:
  	    case CMD_hide:
  	    case CMD_ijump:
  	    case CMD_ilist:
  	    case CMD_isearch:
  	    case CMD_isplit:
  	    case CMD_keepalt:
  	    case CMD_keepjumps:
  	    case CMD_keepmarks:
  	    case CMD_keeppatterns:
  	    case CMD_leftabove:
  	    case CMD_let:
  	    case CMD_lockmarks:
  	    case CMD_lua:
  	    case CMD_match:
  	    case CMD_mzscheme:
  	    case CMD_noautocmd:
  	    case CMD_noswapfile:
  	    case CMD_perl:
  	    case CMD_psearch:
  	    case CMD_python:
  	    case CMD_py3:
  	    case CMD_python3:
  	    case CMD_return:
  	    case CMD_rightbelow:
  	    case CMD_ruby:
  	    case CMD_silent:
  	    case CMD_smagic:
  	    case CMD_snomagic:
  	    case CMD_substitute:
  	    case CMD_syntax:
  	    case CMD_tab:
  	    case CMD_tcl:
  	    case CMD_throw:
  	    case CMD_tilde:
  	    case CMD_topleft:
  	    case CMD_unlet:
  	    case CMD_verbose:
  	    case CMD_vertical:
  	    case CMD_wincmd:
  				break;
  
  	    default:		goto doend;
  	}
      }
  #endif
  
      if (ea.argt & XFILE)
      {
  	if (expand_filename(&ea, cmdlinep, &errormsg) == FAIL)
  	    goto doend;
      }
  
  #ifdef FEAT_LISTCMDS
      /*
       * Accept buffer name.  Cannot be used at the same time with a buffer
       * number.  Don't do this for a user command.
       */
      if ((ea.argt & BUFNAME) && *ea.arg != NUL && ea.addr_count == 0
  	    && !IS_USER_CMDIDX(ea.cmdidx))
      {
  	/*
  	 * :bdelete, :bwipeout and :bunload take several arguments, separated
  	 * by spaces: find next space (skipping over escaped characters).
  	 * The others take one argument: ignore trailing spaces.
  	 */
  	if (ea.cmdidx == CMD_bdelete || ea.cmdidx == CMD_bwipeout
  						  || ea.cmdidx == CMD_bunload)
  	    p = skiptowhite_esc(ea.arg);
  	else
  	{
  	    p = ea.arg + STRLEN(ea.arg);
  	    while (p > ea.arg && VIM_ISWHITE(p[-1]))
  		--p;
  	}
  	ea.line2 = buflist_findpat(ea.arg, p, (ea.argt & BUFUNL) != 0,
  								FALSE, FALSE);
  	if (ea.line2 < 0)	    /* failed */
  	    goto doend;
  	ea.addr_count = 1;
  	ea.arg = skipwhite(p);
      }
  #endif
  
  /*
   * 7. Switch on command name.
   *
   * The "ea" structure holds the arguments that can be used.
   */
      ea.cmdlinep = cmdlinep;
      ea.getline = fgetline;
      ea.cookie = cookie;
  #ifdef FEAT_EVAL
      ea.cstack = cstack;
  #endif
  
  #ifdef FEAT_USR_CMDS
      if (IS_USER_CMDIDX(ea.cmdidx))
      {
  	/*
  	 * Execute a user-defined command.
  	 */
  	do_ucmd(&ea);
      }
      else
  #endif
      {
  	/*
  	 * Call the function to execute the command.
  	 */
  	ea.errmsg = NULL;
  	(cmdnames[ea.cmdidx].cmd_func)(&ea);
  	if (ea.errmsg != NULL)
  	    errormsg = (char_u *)_(ea.errmsg);
      }
  
  #ifdef FEAT_EVAL
      /*
       * If the command just executed called do_cmdline(), any throw or ":return"
       * or ":finish" encountered there must also check the cstack of the still
       * active do_cmdline() that called this do_one_cmd().  Rethrow an uncaught
       * exception, or reanimate a returned function or finished script file and
       * return or finish it again.
       */
      if (need_rethrow)
  	do_throw(cstack);
      else if (check_cstack)
      {
  	if (source_finished(fgetline, cookie))
  	    do_finish(&ea, TRUE);
  	else if (getline_equal(fgetline, cookie, get_func_line)
  						   && current_func_returned())
  	    do_return(&ea, TRUE, FALSE, NULL);
      }
      need_rethrow = check_cstack = FALSE;
  #endif
  
  doend:
      if (curwin->w_cursor.lnum == 0)	/* can happen with zero line number */
      {
  	curwin->w_cursor.lnum = 1;
  	curwin->w_cursor.col = 0;
      }
  
      if (errormsg != NULL && *errormsg != NUL && !did_emsg)
      {
  	if (sourcing)
  	{
  	    if (errormsg != IObuff)
  	    {
  		STRCPY(IObuff, errormsg);
  		errormsg = IObuff;
  	    }
  	    append_command(*cmdlinep);
  	}
  	emsg(errormsg);
      }
  #ifdef FEAT_EVAL
      do_errthrow(cstack,
  	    (ea.cmdidx != CMD_SIZE && !IS_USER_CMDIDX(ea.cmdidx))
  			? cmdnames[(int)ea.cmdidx].cmd_name : (char_u *)NULL);
  #endif
  
      if (verbose_save >= 0)
  	p_verbose = verbose_save;
  #ifdef FEAT_AUTOCMD
      if (cmdmod.save_ei != NULL)
      {
  	/* Restore 'eventignore' to the value before ":noautocmd". */
  	set_string_option_direct((char_u *)"ei", -1, cmdmod.save_ei,
  							  OPT_FREE, SID_NONE);
  	free_string_option(cmdmod.save_ei);
      }
  #endif
      if (cmdmod.filter_regmatch.regprog != NULL)
  	vim_regfree(cmdmod.filter_regmatch.regprog);
  
      cmdmod = save_cmdmod;
  
      if (save_msg_silent != -1)
      {
  	/* messages could be enabled for a serious error, need to check if the
  	 * counters don't become negative */
  	if (!did_emsg || msg_silent > save_msg_silent)
  	    msg_silent = save_msg_silent;
  	emsg_silent -= did_esilent;
  	if (emsg_silent < 0)
  	    emsg_silent = 0;
  	/* Restore msg_scroll, it's set by file I/O commands, even when no
  	 * message is actually displayed. */
  	msg_scroll = save_msg_scroll;
  
  	/* "silent reg" or "silent echo x" inside "redir" leaves msg_col
  	 * somewhere in the line.  Put it back in the first column. */
  	if (redirecting())
  	    msg_col = 0;
      }
  
  #ifdef HAVE_SANDBOX
      if (did_sandbox)
  	--sandbox;
  #endif
  
      if (ea.nextcmd && *ea.nextcmd == NUL)	/* not really a next command */
  	ea.nextcmd = NULL;
  
  #ifdef FEAT_EVAL
      --ex_nesting_level;
  #endif
  
      return ea.nextcmd;
  }
  #if (_MSC_VER == 1200)
   #pragma optimize( "", on )
  #endif
  
  /*
   * Check for an Ex command with optional tail.
   * If there is a match advance "pp" to the argument and return TRUE.
   */
      int
  checkforcmd(
      char_u	**pp,		/* start of command */
      char	*cmd,		/* name of command */
      int		len)		/* required length */
  {
      int		i;
  
      for (i = 0; cmd[i] != NUL; ++i)
  	if (((char_u *)cmd)[i] != (*pp)[i])
  	    break;
      if (i >= len && !isalpha((*pp)[i]))
      {
  	*pp = skipwhite(*pp + i);
  	return TRUE;
      }
      return FALSE;
  }
  
  /*
   * Append "cmd" to the error message in IObuff.
   * Takes care of limiting the length and handling 0xa0, which would be
   * invisible otherwise.
   */
      static void
  append_command(char_u *cmd)
  {
      char_u *s = cmd;
      char_u *d;
  
      STRCAT(IObuff, ": ");
      d = IObuff + STRLEN(IObuff);
      while (*s != NUL && d - IObuff < IOSIZE - 7)
      {
  	if (
  #ifdef FEAT_MBYTE
  		enc_utf8 ? (s[0] == 0xc2 && s[1] == 0xa0) :
  #endif
  		*s == 0xa0)
  	{
  	    s +=
  #ifdef FEAT_MBYTE
  		enc_utf8 ? 2 :
  #endif
  		1;
  	    STRCPY(d, "<a0>");
  	    d += 4;
  	}
  	else
  	    MB_COPY_CHAR(s, d);
      }
      *d = NUL;
  }
  
  /*
   * Find an Ex command by its name, either built-in or user.
   * Start of the name can be found at eap->cmd.
   * Returns pointer to char after the command name.
   * "full" is set to TRUE if the whole command name matched.
   * Returns NULL for an ambiguous user command.
   */
      static char_u *
  find_command(exarg_T *eap, int *full UNUSED)
  {
      int		len;
      char_u	*p;
      int		i;
  
      /*
       * Isolate the command and search for it in the command table.
       * Exceptions:
       * - the 'k' command can directly be followed by any character.
       * - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r'
       *	    but :sre[wind] is another command, as are :scr[iptnames],
       *	    :scs[cope], :sim[alt], :sig[ns] and :sil[ent].
       * - the "d" command can directly be followed by 'l' or 'p' flag.
       */
      p = eap->cmd;
      if (*p == 'k')
      {
  	eap->cmdidx = CMD_k;
  	++p;
      }
      else if (p[0] == 's'
  	    && ((p[1] == 'c' && (p[2] == NUL || (p[2] != 's' && p[2] != 'r'
  			&& (p[3] == NUL || (p[3] != 'i' && p[4] != 'p')))))
  		|| p[1] == 'g'
  		|| (p[1] == 'i' && p[2] != 'm' && p[2] != 'l' && p[2] != 'g')
  		|| p[1] == 'I'
  		|| (p[1] == 'r' && p[2] != 'e')))
      {
  	eap->cmdidx = CMD_substitute;
  	++p;
      }
      else
      {
  	while (ASCII_ISALPHA(*p))
  	    ++p;
  	/* for python 3.x support ":py3", ":python3", ":py3file", etc. */
  	if (eap->cmd[0] == 'p' && eap->cmd[1] == 'y')
  	    while (ASCII_ISALNUM(*p))
  		++p;
  
  	/* check for non-alpha command */
  	if (p == eap->cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL)
  	    ++p;
  	len = (int)(p - eap->cmd);
  	if (*eap->cmd == 'd' && (p[-1] == 'l' || p[-1] == 'p'))
  	{
  	    /* Check for ":dl", ":dell", etc. to ":deletel": that's
  	     * :delete with the 'l' flag.  Same for 'p'. */
  	    for (i = 0; i < len; ++i)
  		if (eap->cmd[i] != ((char_u *)"delete")[i])
  		    break;
  	    if (i == len - 1)
  	    {
  		--len;
  		if (p[-1] == 'l')
  		    eap->flags |= EXFLAG_LIST;
  		else
  		    eap->flags |= EXFLAG_PRINT;
  	    }
  	}
  
  	if (ASCII_ISLOWER(eap->cmd[0]))
  	{
  	    int c1 = eap->cmd[0];
  	    int c2 = eap->cmd[1];
  
  	    if (command_count != (int)CMD_SIZE)
  	    {
  		iemsg((char_u *)_("E943: Command table needs to be updated, run 'make cmdidxs'"));
  		getout(1);
  	    }
  
  	    /* Use a precomputed index for fast look-up in cmdnames[]
  	     * taking into account the first 2 letters of eap->cmd. */
  	    eap->cmdidx = cmdidxs1[CharOrdLow(c1)];
  	    if (ASCII_ISLOWER(c2))
  		eap->cmdidx += cmdidxs2[CharOrdLow(c1)][CharOrdLow(c2)];
  	}
  	else
  	    eap->cmdidx = CMD_bang;
  
  	for ( ; (int)eap->cmdidx < (int)CMD_SIZE;
  			       eap->cmdidx = (cmdidx_T)((int)eap->cmdidx + 1))
  	    if (STRNCMP(cmdnames[(int)eap->cmdidx].cmd_name, (char *)eap->cmd,
  							    (size_t)len) == 0)
  	    {
  #ifdef FEAT_EVAL
  		if (full != NULL
  			   && cmdnames[(int)eap->cmdidx].cmd_name[len] == NUL)
  		    *full = TRUE;
  #endif
  		break;
  	    }
  
  #ifdef FEAT_USR_CMDS
  	/* Look for a user defined command as a last resort.  Let ":Print" be
  	 * overruled by a user defined command. */
  	if ((eap->cmdidx == CMD_SIZE || eap->cmdidx == CMD_Print)
  		&& *eap->cmd >= 'A' && *eap->cmd <= 'Z')
  	{
  	    /* User defined commands may contain digits. */
  	    while (ASCII_ISALNUM(*p))
  		++p;
  	    p = find_ucmd(eap, p, full, NULL, NULL);
  	}
  #endif
  	if (p == eap->cmd)
  	    eap->cmdidx = CMD_SIZE;
      }
  
      return p;
  }
  
  #ifdef FEAT_USR_CMDS
  /*
   * Search for a user command that matches "eap->cmd".
   * Return cmdidx in "eap->cmdidx", flags in "eap->argt", idx in "eap->useridx".
   * Return a pointer to just after the command.
   * Return NULL if there is no matching command.
   */
      static char_u *
  find_ucmd(
      exarg_T	*eap,
      char_u	*p,	/* end of the command (possibly including count) */
      int		*full,	/* set to TRUE for a full match */
      expand_T	*xp,	/* used for completion, NULL otherwise */
      int		*compl)	/* completion flags or NULL */
  {
      int		len = (int)(p - eap->cmd);
      int		j, k, matchlen = 0;
      ucmd_T	*uc;
      int		found = FALSE;
      int		possible = FALSE;
      char_u	*cp, *np;	    /* Point into typed cmd and test name */
      garray_T	*gap;
      int		amb_local = FALSE;  /* Found ambiguous buffer-local command,
  				       only full match global is accepted. */
  
      /*
       * Look for buffer-local user commands first, then global ones.
       */
      gap = &curbuf->b_ucmds;
      for (;;)
      {
  	for (j = 0; j < gap->ga_len; ++j)
  	{
  	    uc = USER_CMD_GA(gap, j);
  	    cp = eap->cmd;
  	    np = uc->uc_name;
  	    k = 0;
  	    while (k < len && *np != NUL && *cp++ == *np++)
  		k++;
  	    if (k == len || (*np == NUL && vim_isdigit(eap->cmd[k])))
  	    {
  		/* If finding a second match, the command is ambiguous.  But
  		 * not if a buffer-local command wasn't a full match and a
  		 * global command is a full match. */
  		if (k == len && found && *np != NUL)
  		{
  		    if (gap == &ucmds)
  			return NULL;
  		    amb_local = TRUE;
  		}
  
  		if (!found || (k == len && *np == NUL))
  		{
  		    /* If we matched up to a digit, then there could
  		     * be another command including the digit that we
  		     * should use instead.
  		     */
  		    if (k == len)
  			found = TRUE;
  		    else
  			possible = TRUE;
  
  		    if (gap == &ucmds)
  			eap->cmdidx = CMD_USER;
  		    else
  			eap->cmdidx = CMD_USER_BUF;
  		    eap->argt = (long)uc->uc_argt;
  		    eap->useridx = j;
  		    eap->addr_type = uc->uc_addr_type;
  
  # ifdef FEAT_CMDL_COMPL
  		    if (compl != NULL)
  			*compl = uc->uc_compl;
  #  ifdef FEAT_EVAL
  		    if (xp != NULL)
  		    {
  			xp->xp_arg = uc->uc_compl_arg;
  			xp->xp_scriptID = uc->uc_scriptID;
  		    }
  #  endif
  # endif
  		    /* Do not search for further abbreviations
  		     * if this is an exact match. */
  		    matchlen = k;
  		    if (k == len && *np == NUL)
  		    {
  			if (full != NULL)
  			    *full = TRUE;
  			amb_local = FALSE;
  			break;
  		    }
  		}
  	    }
  	}
  
  	/* Stop if we found a full match or searched all. */
  	if (j < gap->ga_len || gap == &ucmds)
  	    break;
  	gap = &ucmds;
      }
  
      /* Only found ambiguous matches. */
      if (amb_local)
      {
  	if (xp != NULL)
  	    xp->xp_context = EXPAND_UNSUCCESSFUL;
  	return NULL;
      }
  
      /* The match we found may be followed immediately by a number.  Move "p"
       * back to point to it. */
      if (found || possible)
  	return p + (matchlen - len);
      return p;
  }
  #endif
  
  #if defined(FEAT_EVAL) || defined(PROTO)
  static struct cmdmod
  {
      char	*name;
      int		minlen;
      int		has_count;  /* :123verbose  :3tab */
  } cmdmods[] = {
      {"aboveleft", 3, FALSE},
      {"belowright", 3, FALSE},
      {"botright", 2, FALSE},
      {"browse", 3, FALSE},
      {"confirm", 4, FALSE},
      {"filter", 4, FALSE},
      {"hide", 3, FALSE},
      {"keepalt", 5, FALSE},
      {"keepjumps", 5, FALSE},
      {"keepmarks", 3, FALSE},
      {"keeppatterns", 5, FALSE},
      {"leftabove", 5, FALSE},
      {"lockmarks", 3, FALSE},
      {"noautocmd", 3, FALSE},
      {"noswapfile", 3, FALSE},
      {"rightbelow", 6, FALSE},
      {"sandbox", 3, FALSE},
      {"silent", 3, FALSE},
      {"tab", 3, TRUE},
      {"topleft", 2, FALSE},
      {"unsilent", 3, FALSE},
      {"verbose", 4, TRUE},
      {"vertical", 4, FALSE},
  };
  
  /*
   * Return length of a command modifier (including optional count).
   * Return zero when it's not a modifier.
   */
      int
  modifier_len(char_u *cmd)
  {
      int		i, j;
      char_u	*p = cmd;
  
      if (VIM_ISDIGIT(*cmd))
  	p = skipwhite(skipdigits(cmd));
      for (i = 0; i < (int)(sizeof(cmdmods) / sizeof(struct cmdmod)); ++i)
      {
  	for (j = 0; p[j] != NUL; ++j)
  	    if (p[j] != cmdmods[i].name[j])
  		break;
  	if (!ASCII_ISALPHA(p[j]) && j >= cmdmods[i].minlen
  					&& (p == cmd || cmdmods[i].has_count))
  	    return j + (int)(p - cmd);
      }
      return 0;
  }
  
  /*
   * Return > 0 if an Ex command "name" exists.
   * Return 2 if there is an exact match.
   * Return 3 if there is an ambiguous match.
   */
      int
  cmd_exists(char_u *name)
  {
      exarg_T	ea;
      int		full = FALSE;
      int		i;
      int		j;
      char_u	*p;
  
      /* Check command modifiers. */
      for (i = 0; i < (int)(sizeof(cmdmods) / sizeof(struct cmdmod)); ++i)
      {
  	for (j = 0; name[j] != NUL; ++j)
  	    if (name[j] != cmdmods[i].name[j])
  		break;
  	if (name[j] == NUL && j >= cmdmods[i].minlen)
  	    return (cmdmods[i].name[j] == NUL ? 2 : 1);
      }
  
      /* Check built-in commands and user defined commands.
       * For ":2match" and ":3match" we need to skip the number. */
      ea.cmd = (*name == '2' || *name == '3') ? name + 1 : name;
      ea.cmdidx = (cmdidx_T)0;
      p = find_command(&ea, &full);
      if (p == NULL)
  	return 3;
      if (vim_isdigit(*name) && ea.cmdidx != CMD_match)
  	return 0;
      if (*skipwhite(p) != NUL)
  	return 0;	/* trailing garbage */
      return (ea.cmdidx == CMD_SIZE ? 0 : (full ? 2 : 1));
  }
  #endif
  
  /*
   * This is all pretty much copied from do_one_cmd(), with all the extra stuff
   * we don't need/want deleted.	Maybe this could be done better if we didn't
   * repeat all this stuff.  The only problem is that they may not stay
   * perfectly compatible with each other, but then the command line syntax
   * probably won't change that much -- webb.
   */
      char_u *
  set_one_cmd_context(
      expand_T	*xp,
      char_u	*buff)	    /* buffer for command string */
  {
      char_u		*p;
      char_u		*cmd, *arg;
      int			len = 0;
      exarg_T		ea;
  #if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
      int			compl = EXPAND_NOTHING;
  #endif
  #ifdef FEAT_CMDL_COMPL
      int			delim;
  #endif
      int			forceit = FALSE;
      int			usefilter = FALSE;  /* filter instead of file name */
  
      ExpandInit(xp);
      xp->xp_pattern = buff;
      xp->xp_context = EXPAND_COMMANDS;	/* Default until we get past command */
      ea.argt = 0;
  
  /*
   * 1. skip comment lines and leading space, colons or bars
   */
      for (cmd = buff; vim_strchr((char_u *)" \t:|", *cmd) != NULL; cmd++)
  	;
      xp->xp_pattern = cmd;
  
      if (*cmd == NUL)
  	return NULL;
      if (*cmd == '"')	    /* ignore comment lines */
      {
  	xp->xp_context = EXPAND_NOTHING;
  	return NULL;
      }
  
  /*
   * 3. Skip over the range to find the command.
   */
      cmd = skip_range(cmd, &xp->xp_context);
      xp->xp_pattern = cmd;
      if (*cmd == NUL)
  	return NULL;
      if (*cmd == '"')
      {
  	xp->xp_context = EXPAND_NOTHING;
  	return NULL;
      }
  
      if (*cmd == '|' || *cmd == '\n')
  	return cmd + 1;			/* There's another command */
  
      /*
       * Isolate the command and search for it in the command table.
       * Exceptions:
       * - the 'k' command can directly be followed by any character, but
       *   do accept "keepmarks", "keepalt" and "keepjumps".
       * - the 's' command can be followed directly by 'c', 'g', 'i', 'I' or 'r'
       */
      if (*cmd == 'k' && cmd[1] != 'e')
      {
  	ea.cmdidx = CMD_k;
  	p = cmd + 1;
      }
      else
      {
  	p = cmd;
  	while (ASCII_ISALPHA(*p) || *p == '*')    /* Allow * wild card */
  	    ++p;
  	/* a user command may contain digits */
  	if (ASCII_ISUPPER(cmd[0]))
  	    while (ASCII_ISALNUM(*p) || *p == '*')
  		++p;
  	/* for python 3.x: ":py3*" commands completion */
  	if (cmd[0] == 'p' && cmd[1] == 'y' && p == cmd + 2 && *p == '3')
  	{
  	    ++p;
  	    while (ASCII_ISALPHA(*p) || *p == '*')
  		++p;
  	}
  	/* check for non-alpha command */
  	if (p == cmd && vim_strchr((char_u *)"@*!=><&~#", *p) != NULL)
  	    ++p;
  	len = (int)(p - cmd);
  
  	if (len == 0)
  	{
  	    xp->xp_context = EXPAND_UNSUCCESSFUL;
  	    return NULL;
  	}
  	for (ea.cmdidx = (cmdidx_T)0; (int)ea.cmdidx < (int)CMD_SIZE;
  				   ea.cmdidx = (cmdidx_T)((int)ea.cmdidx + 1))
  	    if (STRNCMP(cmdnames[(int)ea.cmdidx].cmd_name, cmd,
  							    (size_t)len) == 0)
  		break;
  
  #ifdef FEAT_USR_CMDS
  	if (cmd[0] >= 'A' && cmd[0] <= 'Z')
  	    while (ASCII_ISALNUM(*p) || *p == '*')	/* Allow * wild card */
  		++p;
  #endif
      }
  
      /*
       * If the cursor is touching the command, and it ends in an alpha-numeric
       * character, complete the command name.
       */
      if (*p == NUL && ASCII_ISALNUM(p[-1]))
  	return NULL;
  
      if (ea.cmdidx == CMD_SIZE)
      {
  	if (*cmd == 's' && vim_strchr((char_u *)"cgriI", cmd[1]) != NULL)
  	{
  	    ea.cmdidx = CMD_substitute;
  	    p = cmd + 1;
  	}
  #ifdef FEAT_USR_CMDS
  	else if (cmd[0] >= 'A' && cmd[0] <= 'Z')
  	{
  	    ea.cmd = cmd;
  	    p = find_ucmd(&ea, p, NULL, xp,
  # if defined(FEAT_CMDL_COMPL)
  		    &compl
  # else
  		    NULL
  # endif
  		    );
  	    if (p == NULL)
  		ea.cmdidx = CMD_SIZE;	/* ambiguous user command */
  	}
  #endif
      }
      if (ea.cmdidx == CMD_SIZE)
      {
  	/* Not still touching the command and it was an illegal one */
  	xp->xp_context = EXPAND_UNSUCCESSFUL;
  	return NULL;
      }
  
      xp->xp_context = EXPAND_NOTHING; /* Default now that we're past command */
  
      if (*p == '!')		    /* forced commands */
      {
  	forceit = TRUE;
  	++p;
      }
  
  /*
   * 6. parse arguments
   */
      if (!IS_USER_CMDIDX(ea.cmdidx))
  	ea.argt = (long)cmdnames[(int)ea.cmdidx].cmd_argt;
  
      arg = skipwhite(p);
  
      if (ea.cmdidx == CMD_write || ea.cmdidx == CMD_update)
      {
  	if (*arg == '>')			/* append */
  	{
  	    if (*++arg == '>')
  		++arg;
  	    arg = skipwhite(arg);
  	}
  	else if (*arg == '!' && ea.cmdidx == CMD_write)	/* :w !filter */
  	{
  	    ++arg;
  	    usefilter = TRUE;
  	}
      }
  
      if (ea.cmdidx == CMD_read)
      {
  	usefilter = forceit;			/* :r! filter if forced */
  	if (*arg == '!')			/* :r !filter */
  	{
  	    ++arg;
  	    usefilter = TRUE;
  	}
      }
  
      if (ea.cmdidx == CMD_lshift || ea.cmdidx == CMD_rshift)
      {
  	while (*arg == *cmd)	    /* allow any number of '>' or '<' */
  	    ++arg;
  	arg = skipwhite(arg);
      }
  
      /* Does command allow "+command"? */
      if ((ea.argt & EDITCMD) && !usefilter && *arg == '+')
      {
  	/* Check if we're in the +command */
  	p = arg + 1;
  	arg = skip_cmd_arg(arg, FALSE);
  
  	/* Still touching the command after '+'? */
  	if (*arg == NUL)
  	    return p;
  
  	/* Skip space(s) after +command to get to the real argument */
  	arg = skipwhite(arg);
      }
  
      /*
       * Check for '|' to separate commands and '"' to start comments.
       * Don't do this for ":read !cmd" and ":write !cmd".
       */
      if ((ea.argt & TRLBAR) && !usefilter)
      {
  	p = arg;
  	/* ":redir @" is not the start of a comment */
  	if (ea.cmdidx == CMD_redir && p[0] == '@' && p[1] == '"')
  	    p += 2;
  	while (*p)
  	{
  	    if (*p == Ctrl_V)
  	    {
  		if (p[1] != NUL)
  		    ++p;
  	    }
  	    else if ( (*p == '"' && !(ea.argt & NOTRLCOM))
  		    || *p == '|' || *p == '\n')
  	    {
  		if (*(p - 1) != '\\')
  		{
  		    if (*p == '|' || *p == '\n')
  			return p + 1;
  		    return NULL;    /* It's a comment */
  		}
  	    }
  	    MB_PTR_ADV(p);
  	}
      }
  
  						/* no arguments allowed */
      if (!(ea.argt & EXTRA) && *arg != NUL &&
  				    vim_strchr((char_u *)"|\"", *arg) == NULL)
  	return NULL;
  
      /* Find start of last argument (argument just before cursor): */
      p = buff;
      xp->xp_pattern = p;
      len = (int)STRLEN(buff);
      while (*p && p < buff + len)
      {
  	if (*p == ' ' || *p == TAB)
  	{
  	    /* argument starts after a space */
  	    xp->xp_pattern = ++p;
  	}
  	else
  	{
  	    if (*p == '\\' && *(p + 1) != NUL)
  		++p; /* skip over escaped character */
  	    MB_PTR_ADV(p);
  	}
      }
  
      if (ea.argt & XFILE)
      {
  	int	c;
  	int	in_quote = FALSE;
  	char_u	*bow = NULL;	/* Beginning of word */
  
  	/*
  	 * Allow spaces within back-quotes to count as part of the argument
  	 * being expanded.
  	 */
  	xp->xp_pattern = skipwhite(arg);
  	p = xp->xp_pattern;
  	while (*p != NUL)
  	{
  #ifdef FEAT_MBYTE
  	    if (has_mbyte)
  		c = mb_ptr2char(p);
  	    else
  #endif
  		c = *p;
  	    if (c == '\\' && p[1] != NUL)
  		++p;
  	    else if (c == '`')
  	    {
  		if (!in_quote)
  		{
  		    xp->xp_pattern = p;
  		    bow = p + 1;
  		}
  		in_quote = !in_quote;
  	    }
  	    /* An argument can contain just about everything, except
  	     * characters that end the command and white space. */
  	    else if (c == '|' || c == '\n' || c == '"' || (VIM_ISWHITE(c)
  #ifdef SPACE_IN_FILENAME
  					 && (!(ea.argt & NOSPC) || usefilter)
  #endif
  		    ))
  	    {
  		len = 0;  /* avoid getting stuck when space is in 'isfname' */
  		while (*p != NUL)
  		{
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)
  			c = mb_ptr2char(p);
  		    else
  #endif
  			c = *p;
  		    if (c == '`' || vim_isfilec_or_wc(c))
  			break;
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)
  			len = (*mb_ptr2len)(p);
  		    else
  #endif
  			len = 1;
  		    MB_PTR_ADV(p);
  		}
  		if (in_quote)
  		    bow = p;
  		else
  		    xp->xp_pattern = p;
  		p -= len;
  	    }
  	    MB_PTR_ADV(p);
  	}
  
  	/*
  	 * If we are still inside the quotes, and we passed a space, just
  	 * expand from there.
  	 */
  	if (bow != NULL && in_quote)
  	    xp->xp_pattern = bow;
  	xp->xp_context = EXPAND_FILES;
  
  	/* For a shell command more chars need to be escaped. */
  	if (usefilter || ea.cmdidx == CMD_bang || ea.cmdidx == CMD_terminal)
  	{
  #ifndef BACKSLASH_IN_FILENAME
  	    xp->xp_shell = TRUE;
  #endif
  	    /* When still after the command name expand executables. */
  	    if (xp->xp_pattern == skipwhite(arg))
  		xp->xp_context = EXPAND_SHELLCMD;
  	}
  
  	/* Check for environment variable */
  	if (*xp->xp_pattern == '$'
  #if defined(MSWIN)
  		|| *xp->xp_pattern == '%'
  #endif
  		)
  	{
  	    for (p = xp->xp_pattern + 1; *p != NUL; ++p)
  		if (!vim_isIDc(*p))
  		    break;
  	    if (*p == NUL)
  	    {
  		xp->xp_context = EXPAND_ENV_VARS;
  		++xp->xp_pattern;
  #if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
  		/* Avoid that the assignment uses EXPAND_FILES again. */
  		if (compl != EXPAND_USER_DEFINED && compl != EXPAND_USER_LIST)
  		    compl = EXPAND_ENV_VARS;
  #endif
  	    }
  	}
  #if defined(FEAT_CMDL_COMPL)
  	/* Check for user names */
  	if (*xp->xp_pattern == '~')
  	{
  	    for (p = xp->xp_pattern + 1; *p != NUL && *p != '/'; ++p)
  		;
  	    /* Complete ~user only if it partially matches a user name.
  	     * A full match ~user<Tab> will be replaced by user's home
  	     * directory i.e. something like ~user<Tab> -> /home/user/ */
  	    if (*p == NUL && p > xp->xp_pattern + 1
  				       && match_user(xp->xp_pattern + 1) == 1)
  	    {
  		xp->xp_context = EXPAND_USER;
  		++xp->xp_pattern;
  	    }
  	}
  #endif
      }
  
  /*
   * 6. Switch on command name.
   */
      switch (ea.cmdidx)
      {
  	case CMD_find:
  	case CMD_sfind:
  	case CMD_tabfind:
  	    if (xp->xp_context == EXPAND_FILES)
  		xp->xp_context = EXPAND_FILES_IN_PATH;
  	    break;
  	case CMD_cd:
  	case CMD_chdir:
  	case CMD_lcd:
  	case CMD_lchdir:
  	    if (xp->xp_context == EXPAND_FILES)
  		xp->xp_context = EXPAND_DIRECTORIES;
  	    break;
  	case CMD_help:
  	    xp->xp_context = EXPAND_HELP;
  	    xp->xp_pattern = arg;
  	    break;
  
  	/* Command modifiers: return the argument.
  	 * Also for commands with an argument that is a command. */
  	case CMD_aboveleft:
  	case CMD_argdo:
  	case CMD_belowright:
  	case CMD_botright:
  	case CMD_browse:
  	case CMD_bufdo:
  	case CMD_cdo:
  	case CMD_cfdo:
  	case CMD_confirm:
  	case CMD_debug:
  	case CMD_folddoclosed:
  	case CMD_folddoopen:
  	case CMD_hide:
  	case CMD_keepalt:
  	case CMD_keepjumps:
  	case CMD_keepmarks:
  	case CMD_keeppatterns:
  	case CMD_ldo:
  	case CMD_leftabove:
  	case CMD_lfdo:
  	case CMD_lockmarks:
  	case CMD_noautocmd:
  	case CMD_noswapfile:
  	case CMD_rightbelow:
  	case CMD_sandbox:
  	case CMD_silent:
  	case CMD_tab:
  	case CMD_tabdo:
  	case CMD_topleft:
  	case CMD_verbose:
  	case CMD_vertical:
  	case CMD_windo:
  	    return arg;
  
  	case CMD_filter:
  	    if (*arg != NUL)
  		arg = skip_vimgrep_pat(arg, NULL, NULL);
  	    if (arg == NULL || *arg == NUL)
  	    {
  		xp->xp_context = EXPAND_NOTHING;
  		return NULL;
  	    }
  	    return skipwhite(arg);
  
  #ifdef FEAT_CMDL_COMPL
  # ifdef FEAT_SEARCH_EXTRA
  	case CMD_match:
  	    if (*arg == NUL || !ends_excmd(*arg))
  	    {
  		/* also complete "None" */
  		set_context_in_echohl_cmd(xp, arg);
  		arg = skipwhite(skiptowhite(arg));
  		if (*arg != NUL)
  		{
  		    xp->xp_context = EXPAND_NOTHING;
  		    arg = skip_regexp(arg + 1, *arg, p_magic, NULL);
  		}
  	    }
  	    return find_nextcmd(arg);
  # endif
  
  /*
   * All completion for the +cmdline_compl feature goes here.
   */
  
  # ifdef FEAT_USR_CMDS
  	case CMD_command:
  	    /* Check for attributes */
  	    while (*arg == '-')
  	    {
  		arg++;	    /* Skip "-" */
  		p = skiptowhite(arg);
  		if (*p == NUL)
  		{
  		    /* Cursor is still in the attribute */
  		    p = vim_strchr(arg, '=');
  		    if (p == NULL)
  		    {
  			/* No "=", so complete attribute names */
  			xp->xp_context = EXPAND_USER_CMD_FLAGS;
  			xp->xp_pattern = arg;
  			return NULL;
  		    }
  
  		    /* For the -complete, -nargs and -addr attributes, we complete
  		     * their arguments as well.
  		     */
  		    if (STRNICMP(arg, "complete", p - arg) == 0)
  		    {
  			xp->xp_context = EXPAND_USER_COMPLETE;
  			xp->xp_pattern = p + 1;
  			return NULL;
  		    }
  		    else if (STRNICMP(arg, "nargs", p - arg) == 0)
  		    {
  			xp->xp_context = EXPAND_USER_NARGS;
  			xp->xp_pattern = p + 1;
  			return NULL;
  		    }
  		    else if (STRNICMP(arg, "addr", p - arg) == 0)
  		    {
  			xp->xp_context = EXPAND_USER_ADDR_TYPE;
  			xp->xp_pattern = p + 1;
  			return NULL;
  		    }
  		    return NULL;
  		}
  		arg = skipwhite(p);
  	    }
  
  	    /* After the attributes comes the new command name */
  	    p = skiptowhite(arg);
  	    if (*p == NUL)
  	    {
  		xp->xp_context = EXPAND_USER_COMMANDS;
  		xp->xp_pattern = arg;
  		break;
  	    }
  
  	    /* And finally comes a normal command */
  	    return skipwhite(p);
  
  	case CMD_delcommand:
  	    xp->xp_context = EXPAND_USER_COMMANDS;
  	    xp->xp_pattern = arg;
  	    break;
  # endif
  
  	case CMD_global:
  	case CMD_vglobal:
  	    delim = *arg;	    /* get the delimiter */
  	    if (delim)
  		++arg;		    /* skip delimiter if there is one */
  
  	    while (arg[0] != NUL && arg[0] != delim)
  	    {
  		if (arg[0] == '\\' && arg[1] != NUL)
  		    ++arg;
  		++arg;
  	    }
  	    if (arg[0] != NUL)
  		return arg + 1;
  	    break;
  	case CMD_and:
  	case CMD_substitute:
  	    delim = *arg;
  	    if (delim)
  	    {
  		/* skip "from" part */
  		++arg;
  		arg = skip_regexp(arg, delim, p_magic, NULL);
  	    }
  	    /* skip "to" part */
  	    while (arg[0] != NUL && arg[0] != delim)
  	    {
  		if (arg[0] == '\\' && arg[1] != NUL)
  		    ++arg;
  		++arg;
  	    }
  	    if (arg[0] != NUL)	/* skip delimiter */
  		++arg;
  	    while (arg[0] && vim_strchr((char_u *)"|\"#", arg[0]) == NULL)
  		++arg;
  	    if (arg[0] != NUL)
  		return arg;
  	    break;
  	case CMD_isearch:
  	case CMD_dsearch:
  	case CMD_ilist:
  	case CMD_dlist:
  	case CMD_ijump:
  	case CMD_psearch:
  	case CMD_djump:
  	case CMD_isplit:
  	case CMD_dsplit:
  	    arg = skipwhite(skipdigits(arg));	    /* skip count */
  	    if (*arg == '/')	/* Match regexp, not just whole words */
  	    {
  		for (++arg; *arg && *arg != '/'; arg++)
  		    if (*arg == '\\' && arg[1] != NUL)
  			arg++;
  		if (*arg)
  		{
  		    arg = skipwhite(arg + 1);
  
  		    /* Check for trailing illegal characters */
  		    if (*arg && vim_strchr((char_u *)"|\"\n", *arg) == NULL)
  			xp->xp_context = EXPAND_NOTHING;
  		    else
  			return arg;
  		}
  	    }
  	    break;
  #ifdef FEAT_AUTOCMD
  	case CMD_autocmd:
  	    return set_context_in_autocmd(xp, arg, FALSE);
  
  	case CMD_doautocmd:
  	case CMD_doautoall:
  	    return set_context_in_autocmd(xp, arg, TRUE);
  #endif
  	case CMD_set:
  	    set_context_in_set_cmd(xp, arg, 0);
  	    break;
  	case CMD_setglobal:
  	    set_context_in_set_cmd(xp, arg, OPT_GLOBAL);
  	    break;
  	case CMD_setlocal:
  	    set_context_in_set_cmd(xp, arg, OPT_LOCAL);
  	    break;
  	case CMD_tag:
  	case CMD_stag:
  	case CMD_ptag:
  	case CMD_ltag:
  	case CMD_tselect:
  	case CMD_stselect:
  	case CMD_ptselect:
  	case CMD_tjump:
  	case CMD_stjump:
  	case CMD_ptjump:
  	    if (*p_wop != NUL)
  		xp->xp_context = EXPAND_TAGS_LISTFILES;
  	    else
  		xp->xp_context = EXPAND_TAGS;
  	    xp->xp_pattern = arg;
  	    break;
  	case CMD_augroup:
  	    xp->xp_context = EXPAND_AUGROUP;
  	    xp->xp_pattern = arg;
  	    break;
  #ifdef FEAT_SYN_HL
  	case CMD_syntax:
  	    set_context_in_syntax_cmd(xp, arg);
  	    break;
  #endif
  #ifdef FEAT_EVAL
  	case CMD_let:
  	case CMD_if:
  	case CMD_elseif:
  	case CMD_while:
  	case CMD_for:
  	case CMD_echo:
  	case CMD_echon:
  	case CMD_execute:
  	case CMD_echomsg:
  	case CMD_echoerr:
  	case CMD_call:
  	case CMD_return:
  	case CMD_cexpr:
  	case CMD_caddexpr:
  	case CMD_cgetexpr:
  	case CMD_lexpr:
  	case CMD_laddexpr:
  	case CMD_lgetexpr:
  	    set_context_for_expression(xp, arg, ea.cmdidx);
  	    break;
  
  	case CMD_unlet:
  	    while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
  		arg = xp->xp_pattern + 1;
  	    xp->xp_context = EXPAND_USER_VARS;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_function:
  	case CMD_delfunction:
  	    xp->xp_context = EXPAND_USER_FUNC;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_echohl:
  	    set_context_in_echohl_cmd(xp, arg);
  	    break;
  #endif
  	case CMD_highlight:
  	    set_context_in_highlight_cmd(xp, arg);
  	    break;
  #ifdef FEAT_CSCOPE
  	case CMD_cscope:
  	case CMD_lcscope:
  	case CMD_scscope:
  	    set_context_in_cscope_cmd(xp, arg, ea.cmdidx);
  	    break;
  #endif
  #ifdef FEAT_SIGNS
  	case CMD_sign:
  	    set_context_in_sign_cmd(xp, arg);
  	    break;
  #endif
  #ifdef FEAT_LISTCMDS
  	case CMD_bdelete:
  	case CMD_bwipeout:
  	case CMD_bunload:
  	    while ((xp->xp_pattern = vim_strchr(arg, ' ')) != NULL)
  		arg = xp->xp_pattern + 1;
  	    /* FALLTHROUGH */
  	case CMD_buffer:
  	case CMD_sbuffer:
  	case CMD_checktime:
  	    xp->xp_context = EXPAND_BUFFERS;
  	    xp->xp_pattern = arg;
  	    break;
  #endif
  #ifdef FEAT_USR_CMDS
  	case CMD_USER:
  	case CMD_USER_BUF:
  	    if (compl != EXPAND_NOTHING)
  	    {
  		/* XFILE: file names are handled above */
  		if (!(ea.argt & XFILE))
  		{
  # ifdef FEAT_MENU
  		    if (compl == EXPAND_MENUS)
  			return set_context_in_menu_cmd(xp, cmd, arg, forceit);
  # endif
  		    if (compl == EXPAND_COMMANDS)
  			return arg;
  		    if (compl == EXPAND_MAPPINGS)
  			return set_context_in_map_cmd(xp, (char_u *)"map",
  					 arg, forceit, FALSE, FALSE, CMD_map);
  		    /* Find start of last argument. */
  		    p = arg;
  		    while (*p)
  		    {
  			if (*p == ' ')
  			    /* argument starts after a space */
  			    arg = p + 1;
  			else if (*p == '\\' && *(p + 1) != NUL)
  			    ++p; /* skip over escaped character */
  			MB_PTR_ADV(p);
  		    }
  		    xp->xp_pattern = arg;
  		}
  		xp->xp_context = compl;
  	    }
  	    break;
  #endif
  	case CMD_map:	    case CMD_noremap:
  	case CMD_nmap:	    case CMD_nnoremap:
  	case CMD_vmap:	    case CMD_vnoremap:
  	case CMD_omap:	    case CMD_onoremap:
  	case CMD_imap:	    case CMD_inoremap:
  	case CMD_cmap:	    case CMD_cnoremap:
  	case CMD_lmap:	    case CMD_lnoremap:
  	case CMD_smap:	    case CMD_snoremap:
  	case CMD_tmap:	    case CMD_tnoremap:
  	case CMD_xmap:	    case CMD_xnoremap:
  	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
  						     FALSE, FALSE, ea.cmdidx);
  	case CMD_unmap:
  	case CMD_nunmap:
  	case CMD_vunmap:
  	case CMD_ounmap:
  	case CMD_iunmap:
  	case CMD_cunmap:
  	case CMD_lunmap:
  	case CMD_sunmap:
  	case CMD_tunmap:
  	case CMD_xunmap:
  	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
  						      FALSE, TRUE, ea.cmdidx);
  	case CMD_mapclear:
  	case CMD_nmapclear:
  	case CMD_vmapclear:
  	case CMD_omapclear:
  	case CMD_imapclear:
  	case CMD_cmapclear:
  	case CMD_lmapclear:
  	case CMD_smapclear:
  	case CMD_tmapclear:
  	case CMD_xmapclear:
  	    xp->xp_context = EXPAND_MAPCLEAR;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_abbreviate:	case CMD_noreabbrev:
  	case CMD_cabbrev:	case CMD_cnoreabbrev:
  	case CMD_iabbrev:	case CMD_inoreabbrev:
  	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
  						      TRUE, FALSE, ea.cmdidx);
  	case CMD_unabbreviate:
  	case CMD_cunabbrev:
  	case CMD_iunabbrev:
  	    return set_context_in_map_cmd(xp, cmd, arg, forceit,
  						       TRUE, TRUE, ea.cmdidx);
  #ifdef FEAT_MENU
  	case CMD_menu:	    case CMD_noremenu:	    case CMD_unmenu:
  	case CMD_amenu:	    case CMD_anoremenu:	    case CMD_aunmenu:
  	case CMD_nmenu:	    case CMD_nnoremenu:	    case CMD_nunmenu:
  	case CMD_vmenu:	    case CMD_vnoremenu:	    case CMD_vunmenu:
  	case CMD_omenu:	    case CMD_onoremenu:	    case CMD_ounmenu:
  	case CMD_imenu:	    case CMD_inoremenu:	    case CMD_iunmenu:
  	case CMD_cmenu:	    case CMD_cnoremenu:	    case CMD_cunmenu:
  	case CMD_tmenu:				    case CMD_tunmenu:
  	case CMD_popup:	    case CMD_tearoff:	    case CMD_emenu:
  	    return set_context_in_menu_cmd(xp, cmd, arg, forceit);
  #endif
  
  	case CMD_colorscheme:
  	    xp->xp_context = EXPAND_COLORS;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_compiler:
  	    xp->xp_context = EXPAND_COMPILER;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_ownsyntax:
  	    xp->xp_context = EXPAND_OWNSYNTAX;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_setfiletype:
  	    xp->xp_context = EXPAND_FILETYPE;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_packadd:
  	    xp->xp_context = EXPAND_PACKADD;
  	    xp->xp_pattern = arg;
  	    break;
  
  #if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
  	&& (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE))
  	case CMD_language:
  	    p = skiptowhite(arg);
  	    if (*p == NUL)
  	    {
  		xp->xp_context = EXPAND_LANGUAGE;
  		xp->xp_pattern = arg;
  	    }
  	    else
  	    {
  		if ( STRNCMP(arg, "messages", p - arg) == 0
  		  || STRNCMP(arg, "ctype", p - arg) == 0
  		  || STRNCMP(arg, "time", p - arg) == 0)
  		{
  		    xp->xp_context = EXPAND_LOCALES;
  		    xp->xp_pattern = skipwhite(p);
  		}
  		else
  		    xp->xp_context = EXPAND_NOTHING;
  	    }
  	    break;
  #endif
  #if defined(FEAT_PROFILE)
  	case CMD_profile:
  	    set_context_in_profile_cmd(xp, arg);
  	    break;
  #endif
  	case CMD_behave:
  	    xp->xp_context = EXPAND_BEHAVE;
  	    xp->xp_pattern = arg;
  	    break;
  
  	case CMD_messages:
  	    xp->xp_context = EXPAND_MESSAGES;
  	    xp->xp_pattern = arg;
  	    break;
  
  #if defined(FEAT_CMDHIST)
  	case CMD_history:
  	    xp->xp_context = EXPAND_HISTORY;
  	    xp->xp_pattern = arg;
  	    break;
  #endif
  #if defined(FEAT_PROFILE)
  	case CMD_syntime:
  	    xp->xp_context = EXPAND_SYNTIME;
  	    xp->xp_pattern = arg;
  	    break;
  #endif
  
  #endif /* FEAT_CMDL_COMPL */
  
  	default:
  	    break;
      }
      return NULL;
  }
  
  /*
   * skip a range specifier of the form: addr [,addr] [;addr] ..
   *
   * Backslashed delimiters after / or ? will be skipped, and commands will
   * not be expanded between /'s and ?'s or after "'".
   *
   * Also skip white space and ":" characters.
   * Returns the "cmd" pointer advanced to beyond the range.
   */
      char_u *
  skip_range(
      char_u	*cmd,
      int		*ctx)	/* pointer to xp_context or NULL */
  {
      unsigned	delim;
  
      while (vim_strchr((char_u *)" \t0123456789.$%'/?-+,;\\", *cmd) != NULL)
      {
  	if (*cmd == '\\')
  	{
  	    if (cmd[1] == '?' || cmd[1] == '/' || cmd[1] == '&')
  		++cmd;
  	    else
  		break;
  	}
  	else if (*cmd == '\'')
  	{
  	    if (*++cmd == NUL && ctx != NULL)
  		*ctx = EXPAND_NOTHING;
  	}
  	else if (*cmd == '/' || *cmd == '?')
  	{
  	    delim = *cmd++;
  	    while (*cmd != NUL && *cmd != delim)
  		if (*cmd++ == '\\' && *cmd != NUL)
  		    ++cmd;
  	    if (*cmd == NUL && ctx != NULL)
  		*ctx = EXPAND_NOTHING;
  	}
  	if (*cmd != NUL)
  	    ++cmd;
      }
  
      /* Skip ":" and white space. */
      while (*cmd == ':')
  	cmd = skipwhite(cmd + 1);
  
      return cmd;
  }
  
  /*
   * get a single EX address
   *
   * Set ptr to the next character after the part that was interpreted.
   * Set ptr to NULL when an error is encountered.
   *
   * Return MAXLNUM when no Ex address was found.
   */
      static linenr_T
  get_address(
      exarg_T	*eap UNUSED,
      char_u	**ptr,
      int		addr_type,  /* flag: one of ADDR_LINES, ... */
      int		skip,	    /* only skip the address, don't use it */
      int		to_other_file,  /* flag: may jump to other file */
      int		address_count UNUSED) /* 1 for first address, >1 after comma */
  {
      int		c;
      int		i;
      long	n;
      char_u	*cmd;
      pos_T	pos;
      pos_T	*fp;
      linenr_T	lnum;
      buf_T	*buf;
  
      cmd = skipwhite(*ptr);
      lnum = MAXLNUM;
      do
      {
  	switch (*cmd)
  	{
  	    case '.':			    /* '.' - Cursor position */
  		++cmd;
  		switch (addr_type)
  		{
  		    case ADDR_LINES:
  			lnum = curwin->w_cursor.lnum;
  			break;
  		    case ADDR_WINDOWS:
  			lnum = CURRENT_WIN_NR;
  			break;
  		    case ADDR_ARGUMENTS:
  			lnum = curwin->w_arg_idx + 1;
  			break;
  		    case ADDR_LOADED_BUFFERS:
  		    case ADDR_BUFFERS:
  			lnum = curbuf->b_fnum;
  			break;
  		    case ADDR_TABS:
  			lnum = CURRENT_TAB_NR;
  			break;
  		    case ADDR_TABS_RELATIVE:
  			EMSG(_(e_invrange));
  			cmd = NULL;
  			goto error;
  			break;
  #ifdef FEAT_QUICKFIX
  		    case ADDR_QUICKFIX:
  			lnum = qf_get_cur_valid_idx(eap);
  			break;
  #endif
  		}
  		break;
  
  	    case '$':			    /* '$' - last line */
  		++cmd;
  		switch (addr_type)
  		{
  		    case ADDR_LINES:
  			lnum = curbuf->b_ml.ml_line_count;
  			break;
  		    case ADDR_WINDOWS:
  			lnum = LAST_WIN_NR;
  			break;
  		    case ADDR_ARGUMENTS:
  			lnum = ARGCOUNT;
  			break;
  		    case ADDR_LOADED_BUFFERS:
  			buf = lastbuf;
  			while (buf->b_ml.ml_mfp == NULL)
  			{
  			    if (buf->b_prev == NULL)
  				break;
  			    buf = buf->b_prev;
  			}
  			lnum = buf->b_fnum;
  			break;
  		    case ADDR_BUFFERS:
  			lnum = lastbuf->b_fnum;
  			break;
  		    case ADDR_TABS:
  			lnum = LAST_TAB_NR;
  			break;
  		    case ADDR_TABS_RELATIVE:
  			EMSG(_(e_invrange));
  			cmd = NULL;
  			goto error;
  			break;
  #ifdef FEAT_QUICKFIX
  		    case ADDR_QUICKFIX:
  			lnum = qf_get_size(eap);
  			if (lnum == 0)
  			    lnum = 1;
  			break;
  #endif
  		}
  		break;
  
  	    case '\'':			    /* ''' - mark */
  		if (*++cmd == NUL)
  		{
  		    cmd = NULL;
  		    goto error;
  		}
  		if (addr_type != ADDR_LINES)
  		{
  		    EMSG(_(e_invaddr));
  		    cmd = NULL;
  		    goto error;
  		}
  		if (skip)
  		    ++cmd;
  		else
  		{
  		    /* Only accept a mark in another file when it is
  		     * used by itself: ":'M". */
  		    fp = getmark(*cmd, to_other_file && cmd[1] == NUL);
  		    ++cmd;
  		    if (fp == (pos_T *)-1)
  			/* Jumped to another file. */
  			lnum = curwin->w_cursor.lnum;
  		    else
  		    {
  			if (check_mark(fp) == FAIL)
  			{
  			    cmd = NULL;
  			    goto error;
  			}
  			lnum = fp->lnum;
  		    }
  		}
  		break;
  
  	    case '/':
  	    case '?':			/* '/' or '?' - search */
  		c = *cmd++;
  		if (addr_type != ADDR_LINES)
  		{
  		    EMSG(_(e_invaddr));
  		    cmd = NULL;
  		    goto error;
  		}
  		if (skip)	/* skip "/pat/" */
  		{
  		    cmd = skip_regexp(cmd, c, (int)p_magic, NULL);
  		    if (*cmd == c)
  			++cmd;
  		}
  		else
  		{
  		    pos = curwin->w_cursor; /* save curwin->w_cursor */
  		    /*
  		     * When '/' or '?' follows another address, start
  		     * from there.
  		     */
  		    if (lnum != MAXLNUM)
  			curwin->w_cursor.lnum = lnum;
  		    /*
  		     * Start a forward search at the end of the line (unless
  		     * before the first line).
  		     * Start a backward search at the start of the line.
  		     * This makes sure we never match in the current
  		     * line, and can match anywhere in the
  		     * next/previous line.
  		     */
  		    if (c == '/' && curwin->w_cursor.lnum > 0)
  			curwin->w_cursor.col = MAXCOL;
  		    else
  			curwin->w_cursor.col = 0;
  		    searchcmdlen = 0;
  		    if (!do_search(NULL, c, cmd, 1L,
  					  SEARCH_HIS | SEARCH_MSG, NULL, NULL))
  		    {
  			curwin->w_cursor = pos;
  			cmd = NULL;
  			goto error;
  		    }
  		    lnum = curwin->w_cursor.lnum;
  		    curwin->w_cursor = pos;
  		    /* adjust command string pointer */
  		    cmd += searchcmdlen;
  		}
  		break;
  
  	    case '\\':		    /* "\?", "\/" or "\&", repeat search */
  		++cmd;
  		if (addr_type != ADDR_LINES)
  		{
  		    EMSG(_(e_invaddr));
  		    cmd = NULL;
  		    goto error;
  		}
  		if (*cmd == '&')
  		    i = RE_SUBST;
  		else if (*cmd == '?' || *cmd == '/')
  		    i = RE_SEARCH;
  		else
  		{
  		    EMSG(_(e_backslash));
  		    cmd = NULL;
  		    goto error;
  		}
  
  		if (!skip)
  		{
  		    /*
  		     * When search follows another address, start from
  		     * there.
  		     */
  		    if (lnum != MAXLNUM)
  			pos.lnum = lnum;
  		    else
  			pos.lnum = curwin->w_cursor.lnum;
  
  		    /*
  		     * Start the search just like for the above
  		     * do_search().
  		     */
  		    if (*cmd != '?')
  			pos.col = MAXCOL;
  		    else
  			pos.col = 0;
  #ifdef FEAT_VIRTUALEDIT
  		    pos.coladd = 0;
  #endif
  		    if (searchit(curwin, curbuf, &pos,
  				*cmd == '?' ? BACKWARD : FORWARD,
  				(char_u *)"", 1L, SEARCH_MSG,
  					i, (linenr_T)0, NULL, NULL) != FAIL)
  			lnum = pos.lnum;
  		    else
  		    {
  			cmd = NULL;
  			goto error;
  		    }
  		}
  		++cmd;
  		break;
  
  	    default:
  		if (VIM_ISDIGIT(*cmd))	/* absolute line number */
  		    lnum = getdigits(&cmd);
  	}
  
  	for (;;)
  	{
  	    cmd = skipwhite(cmd);
  	    if (*cmd != '-' && *cmd != '+' && !VIM_ISDIGIT(*cmd))
  		break;
  
  	    if (lnum == MAXLNUM)
  	    {
  		switch (addr_type)
  		{
  		    case ADDR_LINES:
  			/* "+1" is same as ".+1" */
  			lnum = curwin->w_cursor.lnum;
  			break;
  		    case ADDR_WINDOWS:
  			lnum = CURRENT_WIN_NR;
  			break;
  		    case ADDR_ARGUMENTS:
  			lnum = curwin->w_arg_idx + 1;
  			break;
  		    case ADDR_LOADED_BUFFERS:
  		    case ADDR_BUFFERS:
  			lnum = curbuf->b_fnum;
  			break;
  		    case ADDR_TABS:
  			lnum = CURRENT_TAB_NR;
  			break;
  		    case ADDR_TABS_RELATIVE:
  			lnum = 1;
  			break;
  #ifdef FEAT_QUICKFIX
  		    case ADDR_QUICKFIX:
  			lnum = qf_get_cur_valid_idx(eap);
  			break;
  #endif
  		}
  	    }
  
  	    if (VIM_ISDIGIT(*cmd))
  		i = '+';		/* "number" is same as "+number" */
  	    else
  		i = *cmd++;
  	    if (!VIM_ISDIGIT(*cmd))	/* '+' is '+1', but '+0' is not '+1' */
  		n = 1;
  	    else
  		n = getdigits(&cmd);
  
  	    if (addr_type == ADDR_TABS_RELATIVE)
  	    {
  		EMSG(_(e_invrange));
  		cmd = NULL;
  		goto error;
  	    }
  	    else if (addr_type == ADDR_LOADED_BUFFERS
  		    || addr_type == ADDR_BUFFERS)
  		lnum = compute_buffer_local_count(
  				    addr_type, lnum, (i == '-') ? -1 * n : n);
  	    else
  	    {
  #ifdef FEAT_FOLDING
  		/* Relative line addressing, need to adjust for folded lines
  		 * now, but only do it after the first address. */
  		if (addr_type == ADDR_LINES && (i == '-' || i == '+')
  			&& address_count >= 2)
  		    (void)hasFolding(lnum, NULL, &lnum);
  #endif
  		if (i == '-')
  		    lnum -= n;
  		else
  		    lnum += n;
  	    }
  	}
      } while (*cmd == '/' || *cmd == '?');
  
  error:
      *ptr = cmd;
      return lnum;
  }
  
  /*
   * Get flags from an Ex command argument.
   */
      static void
  get_flags(exarg_T *eap)
  {
      while (vim_strchr((char_u *)"lp#", *eap->arg) != NULL)
      {
  	if (*eap->arg == 'l')
  	    eap->flags |= EXFLAG_LIST;
  	else if (*eap->arg == 'p')
  	    eap->flags |= EXFLAG_PRINT;
  	else
  	    eap->flags |= EXFLAG_NR;
  	eap->arg = skipwhite(eap->arg + 1);
      }
  }
  
  /*
   * Function called for command which is Not Implemented.  NI!
   */
      void
  ex_ni(exarg_T *eap)
  {
      if (!eap->skip)
  	eap->errmsg = (char_u *)N_("E319: Sorry, the command is not available in this version");
  }
  
  #ifdef HAVE_EX_SCRIPT_NI
  /*
   * Function called for script command which is Not Implemented.  NI!
   * Skips over ":perl <<EOF" constructs.
   */
      static void
  ex_script_ni(exarg_T *eap)
  {
      if (!eap->skip)
  	ex_ni(eap);
      else
  	vim_free(script_get(eap, eap->arg));
  }
  #endif
  
  /*
   * Check range in Ex command for validity.
   * Return NULL when valid, error message when invalid.
   */
      static char_u *
  invalid_range(exarg_T *eap)
  {
      buf_T	*buf;
      if (       eap->line1 < 0
  	    || eap->line2 < 0
  	    || eap->line1 > eap->line2)
  	return (char_u *)_(e_invrange);
  
      if (eap->argt & RANGE)
      {
  	switch(eap->addr_type)
  	{
  	    case ADDR_LINES:
  		if (!(eap->argt & NOTADR)
  			&& eap->line2 > curbuf->b_ml.ml_line_count
  #ifdef FEAT_DIFF
  			    + (eap->cmdidx == CMD_diffget)
  #endif
  		   )
  		    return (char_u *)_(e_invrange);
  		break;
  	    case ADDR_ARGUMENTS:
  		/* add 1 if ARGCOUNT is 0 */
  		if (eap->line2 > ARGCOUNT + (!ARGCOUNT))
  		    return (char_u *)_(e_invrange);
  		break;
  	    case ADDR_BUFFERS:
  		if (eap->line1 < firstbuf->b_fnum
  			|| eap->line2 > lastbuf->b_fnum)
  		    return (char_u *)_(e_invrange);
  		break;
  	    case ADDR_LOADED_BUFFERS:
  		buf = firstbuf;
  		while (buf->b_ml.ml_mfp == NULL)
  		{
  		    if (buf->b_next == NULL)
  			return (char_u *)_(e_invrange);
  		    buf = buf->b_next;
  		}
  		if (eap->line1 < buf->b_fnum)
  		    return (char_u *)_(e_invrange);
  		buf = lastbuf;
  		while (buf->b_ml.ml_mfp == NULL)
  		{
  		    if (buf->b_prev == NULL)
  			return (char_u *)_(e_invrange);
  		    buf = buf->b_prev;
  		}
  		if (eap->line2 > buf->b_fnum)
  		    return (char_u *)_(e_invrange);
  		break;
  	    case ADDR_WINDOWS:
  		if (eap->line2 > LAST_WIN_NR)
  		    return (char_u *)_(e_invrange);
  		break;
  	    case ADDR_TABS:
  		if (eap->line2 > LAST_TAB_NR)
  		    return (char_u *)_(e_invrange);
  		break;
  	    case ADDR_TABS_RELATIVE:
  		/* Do nothing */
  		break;
  #ifdef FEAT_QUICKFIX
  	    case ADDR_QUICKFIX:
  		if (eap->line2 != 1 && eap->line2 > qf_get_size(eap))
  		    return (char_u *)_(e_invrange);
  		break;
  #endif
  	}
      }
      return NULL;
  }
  
  /*
   * Correct the range for zero line number, if required.
   */
      static void
  correct_range(exarg_T *eap)
  {
      if (!(eap->argt & ZEROR))	    /* zero in range not allowed */
      {
  	if (eap->line1 == 0)
  	    eap->line1 = 1;
  	if (eap->line2 == 0)
  	    eap->line2 = 1;
      }
  }
  
  #ifdef FEAT_QUICKFIX
  static char_u	*skip_grep_pat(exarg_T *eap);
  
  /*
   * For a ":vimgrep" or ":vimgrepadd" command return a pointer past the
   * pattern.  Otherwise return eap->arg.
   */
      static char_u *
  skip_grep_pat(exarg_T *eap)
  {
      char_u	*p = eap->arg;
  
      if (*p != NUL && (eap->cmdidx == CMD_vimgrep || eap->cmdidx == CMD_lvimgrep
  		|| eap->cmdidx == CMD_vimgrepadd
  		|| eap->cmdidx == CMD_lvimgrepadd
  		|| grep_internal(eap->cmdidx)))
      {
  	p = skip_vimgrep_pat(p, NULL, NULL);
  	if (p == NULL)
  	    p = eap->arg;
      }
      return p;
  }
  
  /*
   * For the ":make" and ":grep" commands insert the 'makeprg'/'grepprg' option
   * in the command line, so that things like % get expanded.
   */
      static char_u *
  replace_makeprg(exarg_T *eap, char_u *p, char_u **cmdlinep)
  {
      char_u	*new_cmdline;
      char_u	*program;
      char_u	*pos;
      char_u	*ptr;
      int		len;
      int		i;
  
      /*
       * Don't do it when ":vimgrep" is used for ":grep".
       */
      if ((eap->cmdidx == CMD_make || eap->cmdidx == CMD_lmake
  		     || eap->cmdidx == CMD_grep || eap->cmdidx == CMD_lgrep
  		     || eap->cmdidx == CMD_grepadd
  		     || eap->cmdidx == CMD_lgrepadd)
  	    && !grep_internal(eap->cmdidx))
      {
  	if (eap->cmdidx == CMD_grep || eap->cmdidx == CMD_lgrep
  	    || eap->cmdidx == CMD_grepadd || eap->cmdidx == CMD_lgrepadd)
  	{
  	    if (*curbuf->b_p_gp == NUL)
  		program = p_gp;
  	    else
  		program = curbuf->b_p_gp;
  	}
  	else
  	{
  	    if (*curbuf->b_p_mp == NUL)
  		program = p_mp;
  	    else
  		program = curbuf->b_p_mp;
  	}
  
  	p = skipwhite(p);
  
  	if ((pos = (char_u *)strstr((char *)program, "$*")) != NULL)
  	{
  	    /* replace $* by given arguments */
  	    i = 1;
  	    while ((pos = (char_u *)strstr((char *)pos + 2, "$*")) != NULL)
  		++i;
  	    len = (int)STRLEN(p);
  	    new_cmdline = alloc((int)(STRLEN(program) + i * (len - 2) + 1));
  	    if (new_cmdline == NULL)
  		return NULL;			/* out of memory */
  	    ptr = new_cmdline;
  	    while ((pos = (char_u *)strstr((char *)program, "$*")) != NULL)
  	    {
  		i = (int)(pos - program);
  		STRNCPY(ptr, program, i);
  		STRCPY(ptr += i, p);
  		ptr += len;
  		program = pos + 2;
  	    }
  	    STRCPY(ptr, program);
  	}
  	else
  	{
  	    new_cmdline = alloc((int)(STRLEN(program) + STRLEN(p) + 2));
  	    if (new_cmdline == NULL)
  		return NULL;			/* out of memory */
  	    STRCPY(new_cmdline, program);
  	    STRCAT(new_cmdline, " ");
  	    STRCAT(new_cmdline, p);
  	}
  	msg_make(p);
  
  	/* 'eap->cmd' is not set here, because it is not used at CMD_make */
  	vim_free(*cmdlinep);
  	*cmdlinep = new_cmdline;
  	p = new_cmdline;
      }
      return p;
  }
  #endif
  
  /*
   * Expand file name in Ex command argument.
   * Return FAIL for failure, OK otherwise.
   */
      int
  expand_filename(
      exarg_T	*eap,
      char_u	**cmdlinep,
      char_u	**errormsgp)
  {
      int		has_wildcards;	/* need to expand wildcards */
      char_u	*repl;
      int		srclen;
      char_u	*p;
      int		n;
      int		escaped;
  
  #ifdef FEAT_QUICKFIX
      /* Skip a regexp pattern for ":vimgrep[add] pat file..." */
      p = skip_grep_pat(eap);
  #else
      p = eap->arg;
  #endif
  
      /*
       * Decide to expand wildcards *before* replacing '%', '#', etc.  If
       * the file name contains a wildcard it should not cause expanding.
       * (it will be expanded anyway if there is a wildcard before replacing).
       */
      has_wildcards = mch_has_wildcard(p);
      while (*p != NUL)
      {
  #ifdef FEAT_EVAL
  	/* Skip over `=expr`, wildcards in it are not expanded. */
  	if (p[0] == '`' && p[1] == '=')
  	{
  	    p += 2;
  	    (void)skip_expr(&p);
  	    if (*p == '`')
  		++p;
  	    continue;
  	}
  #endif
  	/*
  	 * Quick check if this cannot be the start of a special string.
  	 * Also removes backslash before '%', '#' and '<'.
  	 */
  	if (vim_strchr((char_u *)"%#<", *p) == NULL)
  	{
  	    ++p;
  	    continue;
  	}
  
  	/*
  	 * Try to find a match at this position.
  	 */
  	repl = eval_vars(p, eap->arg, &srclen, &(eap->do_ecmd_lnum),
  							 errormsgp, &escaped);
  	if (*errormsgp != NULL)		/* error detected */
  	    return FAIL;
  	if (repl == NULL)		/* no match found */
  	{
  	    p += srclen;
  	    continue;
  	}
  
  	/* Wildcards won't be expanded below, the replacement is taken
  	 * literally.  But do expand "~/file", "~user/file" and "$HOME/file". */
  	if (vim_strchr(repl, '$') != NULL || vim_strchr(repl, '~') != NULL)
  	{
  	    char_u *l = repl;
  
  	    repl = expand_env_save(repl);
  	    vim_free(l);
  	}
  
  	/* Need to escape white space et al. with a backslash.
  	 * Don't do this for:
  	 * - replacement that already has been escaped: "##"
  	 * - shell commands (may have to use quotes instead).
  	 * - non-unix systems when there is a single argument (spaces don't
  	 *   separate arguments then).
  	 */
  	if (!eap->usefilter
  		&& !escaped
  		&& eap->cmdidx != CMD_bang
  		&& eap->cmdidx != CMD_grep
  		&& eap->cmdidx != CMD_grepadd
  		&& eap->cmdidx != CMD_hardcopy
  		&& eap->cmdidx != CMD_lgrep
  		&& eap->cmdidx != CMD_lgrepadd
  		&& eap->cmdidx != CMD_lmake
  		&& eap->cmdidx != CMD_make
  		&& eap->cmdidx != CMD_terminal
  #ifndef UNIX
  		&& !(eap->argt & NOSPC)
  #endif
  		)
  	{
  	    char_u	*l;
  #ifdef BACKSLASH_IN_FILENAME
  	    /* Don't escape a backslash here, because rem_backslash() doesn't
  	     * remove it later. */
  	    static char_u *nobslash = (char_u *)" \t\"|";
  # define ESCAPE_CHARS nobslash
  #else
  # define ESCAPE_CHARS escape_chars
  #endif
  
  	    for (l = repl; *l; ++l)
  		if (vim_strchr(ESCAPE_CHARS, *l) != NULL)
  		{
  		    l = vim_strsave_escaped(repl, ESCAPE_CHARS);
  		    if (l != NULL)
  		    {
  			vim_free(repl);
  			repl = l;
  		    }
  		    break;
  		}
  	}
  
  	/* For a shell command a '!' must be escaped. */
  	if ((eap->usefilter || eap->cmdidx == CMD_bang
  						|| eap->cmdidx == CMD_terminal)
  			    && vim_strpbrk(repl, (char_u *)"!") != NULL)
  	{
  	    char_u	*l;
  
  	    l = vim_strsave_escaped(repl, (char_u *)"!");
  	    if (l != NULL)
  	    {
  		vim_free(repl);
  		repl = l;
  	    }
  	}
  
  	p = repl_cmdline(eap, p, srclen, repl, cmdlinep);
  	vim_free(repl);
  	if (p == NULL)
  	    return FAIL;
      }
  
      /*
       * One file argument: Expand wildcards.
       * Don't do this with ":r !command" or ":w !command".
       */
      if ((eap->argt & NOSPC) && !eap->usefilter)
      {
  	/*
  	 * May do this twice:
  	 * 1. Replace environment variables.
  	 * 2. Replace any other wildcards, remove backslashes.
  	 */
  	for (n = 1; n <= 2; ++n)
  	{
  	    if (n == 2)
  	    {
  		/*
  		 * Halve the number of backslashes (this is Vi compatible).
  		 * For Unix and OS/2, when wildcards are expanded, this is
  		 * done by ExpandOne() below.
  		 */
  #if defined(UNIX)
  		if (!has_wildcards)
  #endif
  		    backslash_halve(eap->arg);
  	    }
  
  	    if (has_wildcards)
  	    {
  		if (n == 1)
  		{
  		    /*
  		     * First loop: May expand environment variables.  This
  		     * can be done much faster with expand_env() than with
  		     * something else (e.g., calling a shell).
  		     * After expanding environment variables, check again
  		     * if there are still wildcards present.
  		     */
  		    if (vim_strchr(eap->arg, '$') != NULL
  			    || vim_strchr(eap->arg, '~') != NULL)
  		    {
  			expand_env_esc(eap->arg, NameBuff, MAXPATHL,
  							    TRUE, TRUE, NULL);
  			has_wildcards = mch_has_wildcard(NameBuff);
  			p = NameBuff;
  		    }
  		    else
  			p = NULL;
  		}
  		else /* n == 2 */
  		{
  		    expand_T	xpc;
  		    int		options = WILD_LIST_NOTFOUND|WILD_ADD_SLASH;
  
  		    ExpandInit(&xpc);
  		    xpc.xp_context = EXPAND_FILES;
  		    if (p_wic)
  			options += WILD_ICASE;
  		    p = ExpandOne(&xpc, eap->arg, NULL,
  						   options, WILD_EXPAND_FREE);
  		    if (p == NULL)
  			return FAIL;
  		}
  		if (p != NULL)
  		{
  		    (void)repl_cmdline(eap, eap->arg, (int)STRLEN(eap->arg),
  								 p, cmdlinep);
  		    if (n == 2)	/* p came from ExpandOne() */
  			vim_free(p);
  		}
  	    }
  	}
      }
      return OK;
  }
  
  /*
   * Replace part of the command line, keeping eap->cmd, eap->arg and
   * eap->nextcmd correct.
   * "src" points to the part that is to be replaced, of length "srclen".
   * "repl" is the replacement string.
   * Returns a pointer to the character after the replaced string.
   * Returns NULL for failure.
   */
      static char_u *
  repl_cmdline(
      exarg_T	*eap,
      char_u	*src,
      int		srclen,
      char_u	*repl,
      char_u	**cmdlinep)
  {
      int		len;
      int		i;
      char_u	*new_cmdline;
  
      /*
       * The new command line is build in new_cmdline[].
       * First allocate it.
       * Careful: a "+cmd" argument may have been NUL terminated.
       */
      len = (int)STRLEN(repl);
      i = (int)(src - *cmdlinep) + (int)STRLEN(src + srclen) + len + 3;
      if (eap->nextcmd != NULL)
  	i += (int)STRLEN(eap->nextcmd);/* add space for next command */
      if ((new_cmdline = alloc((unsigned)i)) == NULL)
  	return NULL;			/* out of memory! */
  
      /*
       * Copy the stuff before the expanded part.
       * Copy the expanded stuff.
       * Copy what came after the expanded part.
       * Copy the next commands, if there are any.
       */
      i = (int)(src - *cmdlinep);	/* length of part before match */
      mch_memmove(new_cmdline, *cmdlinep, (size_t)i);
  
      mch_memmove(new_cmdline + i, repl, (size_t)len);
      i += len;				/* remember the end of the string */
      STRCPY(new_cmdline + i, src + srclen);
      src = new_cmdline + i;		/* remember where to continue */
  
      if (eap->nextcmd != NULL)		/* append next command */
      {
  	i = (int)STRLEN(new_cmdline) + 1;
  	STRCPY(new_cmdline + i, eap->nextcmd);
  	eap->nextcmd = new_cmdline + i;
      }
      eap->cmd = new_cmdline + (eap->cmd - *cmdlinep);
      eap->arg = new_cmdline + (eap->arg - *cmdlinep);
      if (eap->do_ecmd_cmd != NULL && eap->do_ecmd_cmd != dollar_command)
  	eap->do_ecmd_cmd = new_cmdline + (eap->do_ecmd_cmd - *cmdlinep);
      vim_free(*cmdlinep);
      *cmdlinep = new_cmdline;
  
      return src;
  }
  
  /*
   * Check for '|' to separate commands and '"' to start comments.
   */
      void
  separate_nextcmd(exarg_T *eap)
  {
      char_u	*p;
  
  #ifdef FEAT_QUICKFIX
      p = skip_grep_pat(eap);
  #else
      p = eap->arg;
  #endif
  
      for ( ; *p; MB_PTR_ADV(p))
      {
  	if (*p == Ctrl_V)
  	{
  	    if (eap->argt & (USECTRLV | XFILE))
  		++p;		/* skip CTRL-V and next char */
  	    else
  				/* remove CTRL-V and skip next char */
  		STRMOVE(p, p + 1);
  	    if (*p == NUL)		/* stop at NUL after CTRL-V */
  		break;
  	}
  
  #ifdef FEAT_EVAL
  	/* Skip over `=expr` when wildcards are expanded. */
  	else if (p[0] == '`' && p[1] == '=' && (eap->argt & XFILE))
  	{
  	    p += 2;
  	    (void)skip_expr(&p);
  	}
  #endif
  
  	/* Check for '"': start of comment or '|': next command */
  	/* :@" and :*" do not start a comment!
  	 * :redir @" doesn't either. */
  	else if ((*p == '"' && !(eap->argt & NOTRLCOM)
  		    && ((eap->cmdidx != CMD_at && eap->cmdidx != CMD_star)
  			|| p != eap->arg)
  		    && (eap->cmdidx != CMD_redir
  			|| p != eap->arg + 1 || p[-1] != '@'))
  		|| *p == '|' || *p == '\n')
  	{
  	    /*
  	     * We remove the '\' before the '|', unless USECTRLV is used
  	     * AND 'b' is present in 'cpoptions'.
  	     */
  	    if ((vim_strchr(p_cpo, CPO_BAR) == NULL
  			      || !(eap->argt & USECTRLV)) && *(p - 1) == '\\')
  	    {
  		STRMOVE(p - 1, p);	/* remove the '\' */
  		--p;
  	    }
  	    else
  	    {
  		eap->nextcmd = check_nextcmd(p);
  		*p = NUL;
  		break;
  	    }
  	}
      }
  
      if (!(eap->argt & NOTRLCOM))	/* remove trailing spaces */
  	del_trailing_spaces(eap->arg);
  }
  
  /*
   * get + command from ex argument
   */
      static char_u *
  getargcmd(char_u **argp)
  {
      char_u *arg = *argp;
      char_u *command = NULL;
  
      if (*arg == '+')	    /* +[command] */
      {
  	++arg;
  	if (vim_isspace(*arg) || *arg == NUL)
  	    command = dollar_command;
  	else
  	{
  	    command = arg;
  	    arg = skip_cmd_arg(command, TRUE);
  	    if (*arg != NUL)
  		*arg++ = NUL;		/* terminate command with NUL */
  	}
  
  	arg = skipwhite(arg);	/* skip over spaces */
  	*argp = arg;
      }
      return command;
  }
  
  /*
   * Find end of "+command" argument.  Skip over "\ " and "\\".
   */
      static char_u *
  skip_cmd_arg(
      char_u *p,
      int	   rembs)	/* TRUE to halve the number of backslashes */
  {
      while (*p && !vim_isspace(*p))
      {
  	if (*p == '\\' && p[1] != NUL)
  	{
  	    if (rembs)
  		STRMOVE(p, p + 1);
  	    else
  		++p;
  	}
  	MB_PTR_ADV(p);
      }
      return p;
  }
  
  /*
   * Get "++opt=arg" argument.
   * Return FAIL or OK.
   */
      static int
  getargopt(exarg_T *eap)
  {
      char_u	*arg = eap->arg + 2;
      int		*pp = NULL;
  #ifdef FEAT_MBYTE
      int		bad_char_idx;
      char_u	*p;
  #endif
  
      /* ":edit ++[no]bin[ary] file" */
      if (STRNCMP(arg, "bin", 3) == 0 || STRNCMP(arg, "nobin", 5) == 0)
      {
  	if (*arg == 'n')
  	{
  	    arg += 2;
  	    eap->force_bin = FORCE_NOBIN;
  	}
  	else
  	    eap->force_bin = FORCE_BIN;
  	if (!checkforcmd(&arg, "binary", 3))
  	    return FAIL;
  	eap->arg = skipwhite(arg);
  	return OK;
      }
  
      /* ":read ++edit file" */
      if (STRNCMP(arg, "edit", 4) == 0)
      {
  	eap->read_edit = TRUE;
  	eap->arg = skipwhite(arg + 4);
  	return OK;
      }
  
      if (STRNCMP(arg, "ff", 2) == 0)
      {
  	arg += 2;
  	pp = &eap->force_ff;
      }
      else if (STRNCMP(arg, "fileformat", 10) == 0)
      {
  	arg += 10;
  	pp = &eap->force_ff;
      }
  #ifdef FEAT_MBYTE
      else if (STRNCMP(arg, "enc", 3) == 0)
      {
  	if (STRNCMP(arg, "encoding", 8) == 0)
  	    arg += 8;
  	else
  	    arg += 3;
  	pp = &eap->force_enc;
      }
      else if (STRNCMP(arg, "bad", 3) == 0)
      {
  	arg += 3;
  	pp = &bad_char_idx;
      }
  #endif
  
      if (pp == NULL || *arg != '=')
  	return FAIL;
  
      ++arg;
      *pp = (int)(arg - eap->cmd);
      arg = skip_cmd_arg(arg, FALSE);
      eap->arg = skipwhite(arg);
      *arg = NUL;
  
  #ifdef FEAT_MBYTE
      if (pp == &eap->force_ff)
      {
  #endif
  	if (check_ff_value(eap->cmd + eap->force_ff) == FAIL)
  	    return FAIL;
  #ifdef FEAT_MBYTE
      }
      else if (pp == &eap->force_enc)
      {
  	/* Make 'fileencoding' lower case. */
  	for (p = eap->cmd + eap->force_enc; *p != NUL; ++p)
  	    *p = TOLOWER_ASC(*p);
      }
      else
      {
  	/* Check ++bad= argument.  Must be a single-byte character, "keep" or
  	 * "drop". */
  	p = eap->cmd + bad_char_idx;
  	if (STRICMP(p, "keep") == 0)
  	    eap->bad_char = BAD_KEEP;
  	else if (STRICMP(p, "drop") == 0)
  	    eap->bad_char = BAD_DROP;
  	else if (MB_BYTE2LEN(*p) == 1 && p[1] == NUL)
  	    eap->bad_char = *p;
  	else
  	    return FAIL;
      }
  #endif
  
      return OK;
  }
  
  /*
   * ":abbreviate" and friends.
   */
      static void
  ex_abbreviate(exarg_T *eap)
  {
      do_exmap(eap, TRUE);	/* almost the same as mapping */
  }
  
  /*
   * ":map" and friends.
   */
      static void
  ex_map(exarg_T *eap)
  {
      /*
       * If we are sourcing .exrc or .vimrc in current directory we
       * print the mappings for security reasons.
       */
      if (secure)
      {
  	secure = 2;
  	msg_outtrans(eap->cmd);
  	msg_putchar('\n');
      }
      do_exmap(eap, FALSE);
  }
  
  /*
   * ":unmap" and friends.
   */
      static void
  ex_unmap(exarg_T *eap)
  {
      do_exmap(eap, FALSE);
  }
  
  /*
   * ":mapclear" and friends.
   */
      static void
  ex_mapclear(exarg_T *eap)
  {
      map_clear(eap->cmd, eap->arg, eap->forceit, FALSE);
  }
  
  /*
   * ":abclear" and friends.
   */
      static void
  ex_abclear(exarg_T *eap)
  {
      map_clear(eap->cmd, eap->arg, TRUE, TRUE);
  }
  
  #if defined(FEAT_AUTOCMD) || defined(PROTO)
      static void
  ex_autocmd(exarg_T *eap)
  {
      /*
       * Disallow auto commands from .exrc and .vimrc in current
       * directory for security reasons.
       */
      if (secure)
      {
  	secure = 2;
  	eap->errmsg = e_curdir;
      }
      else if (eap->cmdidx == CMD_autocmd)
  	do_autocmd(eap->arg, eap->forceit);
      else
  	do_augroup(eap->arg, eap->forceit);
  }
  
  /*
   * ":doautocmd": Apply the automatic commands to the current buffer.
   */
      static void
  ex_doautocmd(exarg_T *eap)
  {
      char_u	*arg = eap->arg;
      int		call_do_modelines = check_nomodeline(&arg);
      int		did_aucmd;
  
      (void)do_doautocmd(arg, TRUE, &did_aucmd);
      /* Only when there is no <nomodeline>. */
      if (call_do_modelines && did_aucmd)
  	do_modelines(0);
  }
  #endif
  
  #ifdef FEAT_LISTCMDS
  /*
   * :[N]bunload[!] [N] [bufname] unload buffer
   * :[N]bdelete[!] [N] [bufname] delete buffer from buffer list
   * :[N]bwipeout[!] [N] [bufname] delete buffer really
   */
      static void
  ex_bunload(exarg_T *eap)
  {
      eap->errmsg = do_bufdel(
  	    eap->cmdidx == CMD_bdelete ? DOBUF_DEL
  		: eap->cmdidx == CMD_bwipeout ? DOBUF_WIPE
  		: DOBUF_UNLOAD, eap->arg,
  	    eap->addr_count, (int)eap->line1, (int)eap->line2, eap->forceit);
  }
  
  /*
   * :[N]buffer [N]	to buffer N
   * :[N]sbuffer [N]	to buffer N
   */
      static void
  ex_buffer(exarg_T *eap)
  {
      if (*eap->arg)
  	eap->errmsg = e_trailing;
      else
      {
  	if (eap->addr_count == 0)	/* default is current buffer */
  	    goto_buffer(eap, DOBUF_CURRENT, FORWARD, 0);
  	else
  	    goto_buffer(eap, DOBUF_FIRST, FORWARD, (int)eap->line2);
  	if (eap->do_ecmd_cmd != NULL)
  	    do_cmdline_cmd(eap->do_ecmd_cmd);
      }
  }
  
  /*
   * :[N]bmodified [N]	to next mod. buffer
   * :[N]sbmodified [N]	to next mod. buffer
   */
      static void
  ex_bmodified(exarg_T *eap)
  {
      goto_buffer(eap, DOBUF_MOD, FORWARD, (int)eap->line2);
      if (eap->do_ecmd_cmd != NULL)
  	do_cmdline_cmd(eap->do_ecmd_cmd);
  }
  
  /*
   * :[N]bnext [N]	to next buffer
   * :[N]sbnext [N]	split and to next buffer
   */
      static void
  ex_bnext(exarg_T *eap)
  {
      goto_buffer(eap, DOBUF_CURRENT, FORWARD, (int)eap->line2);
      if (eap->do_ecmd_cmd != NULL)
  	do_cmdline_cmd(eap->do_ecmd_cmd);
  }
  
  /*
   * :[N]bNext [N]	to previous buffer
   * :[N]bprevious [N]	to previous buffer
   * :[N]sbNext [N]	split and to previous buffer
   * :[N]sbprevious [N]	split and to previous buffer
   */
      static void
  ex_bprevious(exarg_T *eap)
  {
      goto_buffer(eap, DOBUF_CURRENT, BACKWARD, (int)eap->line2);
      if (eap->do_ecmd_cmd != NULL)
  	do_cmdline_cmd(eap->do_ecmd_cmd);
  }
  
  /*
   * :brewind		to first buffer
   * :bfirst		to first buffer
   * :sbrewind		split and to first buffer
   * :sbfirst		split and to first buffer
   */
      static void
  ex_brewind(exarg_T *eap)
  {
      goto_buffer(eap, DOBUF_FIRST, FORWARD, 0);
      if (eap->do_ecmd_cmd != NULL)
  	do_cmdline_cmd(eap->do_ecmd_cmd);
  }
  
  /*
   * :blast		to last buffer
   * :sblast		split and to last buffer
   */
      static void
  ex_blast(exarg_T *eap)
  {
      goto_buffer(eap, DOBUF_LAST, BACKWARD, 0);
      if (eap->do_ecmd_cmd != NULL)
  	do_cmdline_cmd(eap->do_ecmd_cmd);
  }
  #endif
  
      int
  ends_excmd(int c)
  {
      return (c == NUL || c == '|' || c == '"' || c == '\n');
  }
  
  #if defined(FEAT_SYN_HL) || defined(FEAT_SEARCH_EXTRA) || defined(FEAT_EVAL) \
  	|| defined(PROTO)
  /*
   * Return the next command, after the first '|' or '\n'.
   * Return NULL if not found.
   */
      char_u *
  find_nextcmd(char_u *p)
  {
      while (*p != '|' && *p != '\n')
      {
  	if (*p == NUL)
  	    return NULL;
  	++p;
      }
      return (p + 1);
  }
  #endif
  
  /*
   * Check if *p is a separator between Ex commands, skipping over white space.
   * Return NULL if it isn't, the following character if it is.
   */
      char_u *
  check_nextcmd(char_u *p)
  {
      char_u *s = skipwhite(p);
  
      if (*s == '|' || *s == '\n')
  	return (s + 1);
      else
  	return NULL;
  }
  
  /*
   * - if there are more files to edit
   * - and this is the last window
   * - and forceit not used
   * - and not repeated twice on a row
   *    return FAIL and give error message if 'message' TRUE
   * return OK otherwise
   */
      static int
  check_more(
      int message,	    /* when FALSE check only, no messages */
      int forceit)
  {
      int	    n = ARGCOUNT - curwin->w_arg_idx - 1;
  
      if (!forceit && only_one_window()
  	    && ARGCOUNT > 1 && !arg_had_last && n >= 0 && quitmore == 0)
      {
  	if (message)
  	{
  #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
  	    if ((p_confirm || cmdmod.confirm) && curbuf->b_fname != NULL)
  	    {
  		char_u	buff[DIALOG_MSG_SIZE];
  
  		if (n == 1)
  		    vim_strncpy(buff,
  			    (char_u *)_("1 more file to edit.  Quit anyway?"),
  							 DIALOG_MSG_SIZE - 1);
  		else
  		    vim_snprintf((char *)buff, DIALOG_MSG_SIZE,
  			      _("%d more files to edit.  Quit anyway?"), n);
  		if (vim_dialog_yesno(VIM_QUESTION, NULL, buff, 1) == VIM_YES)
  		    return OK;
  		return FAIL;
  	    }
  #endif
  	    if (n == 1)
  		EMSG(_("E173: 1 more file to edit"));
  	    else
  		EMSGN(_("E173: %ld more files to edit"), n);
  	    quitmore = 2;	    /* next try to quit is allowed */
  	}
  	return FAIL;
      }
      return OK;
  }
  
  #ifdef FEAT_CMDL_COMPL
  /*
   * Function given to ExpandGeneric() to obtain the list of command names.
   */
      char_u *
  get_command_name(expand_T *xp UNUSED, int idx)
  {
      if (idx >= (int)CMD_SIZE)
  # ifdef FEAT_USR_CMDS
  	return get_user_command_name(idx);
  # else
  	return NULL;
  # endif
      return cmdnames[idx].cmd_name;
  }
  #endif
  
  #if defined(FEAT_USR_CMDS) || defined(PROTO)
  static int	uc_add_command(char_u *name, size_t name_len, char_u *rep, long argt, long def, int flags, int compl, char_u *compl_arg, int addr_type, int force);
  static void	uc_list(char_u *name, size_t name_len);
  static int	uc_scan_attr(char_u *attr, size_t len, long *argt, long *def, int *flags, int *compl, char_u **compl_arg, int* attr_type_arg);
  static char_u	*uc_split_args(char_u *arg, size_t *lenp);
  static size_t	uc_check_code(char_u *code, size_t len, char_u *buf, ucmd_T *cmd, exarg_T *eap, char_u **split_buf, size_t *split_len);
  
      static int
  uc_add_command(
      char_u	*name,
      size_t	name_len,
      char_u	*rep,
      long	argt,
      long	def,
      int		flags,
      int		compl,
      char_u	*compl_arg,
      int		addr_type,
      int		force)
  {
      ucmd_T	*cmd = NULL;
      char_u	*p;
      int		i;
      int		cmp = 1;
      char_u	*rep_buf = NULL;
      garray_T	*gap;
  
      replace_termcodes(rep, &rep_buf, FALSE, FALSE, FALSE);
      if (rep_buf == NULL)
      {
  	/* Can't replace termcodes - try using the string as is */
  	rep_buf = vim_strsave(rep);
  
  	/* Give up if out of memory */
  	if (rep_buf == NULL)
  	    return FAIL;
      }
  
      /* get address of growarray: global or in curbuf */
      if (flags & UC_BUFFER)
      {
  	gap = &curbuf->b_ucmds;
  	if (gap->ga_itemsize == 0)
  	    ga_init2(gap, (int)sizeof(ucmd_T), 4);
      }
      else
  	gap = &ucmds;
  
      /* Search for the command in the already defined commands. */
      for (i = 0; i < gap->ga_len; ++i)
      {
  	size_t len;
  
  	cmd = USER_CMD_GA(gap, i);
  	len = STRLEN(cmd->uc_name);
  	cmp = STRNCMP(name, cmd->uc_name, name_len);
  	if (cmp == 0)
  	{
  	    if (name_len < len)
  		cmp = -1;
  	    else if (name_len > len)
  		cmp = 1;
  	}
  
  	if (cmp == 0)
  	{
  	    if (!force)
  	    {
  		EMSG(_("E174: Command already exists: add ! to replace it"));
  		goto fail;
  	    }
  
  	    vim_free(cmd->uc_rep);
  	    cmd->uc_rep = NULL;
  #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
  	    vim_free(cmd->uc_compl_arg);
  	    cmd->uc_compl_arg = NULL;
  #endif
  	    break;
  	}
  
  	/* Stop as soon as we pass the name to add */
  	if (cmp < 0)
  	    break;
      }
  
      /* Extend the array unless we're replacing an existing command */
      if (cmp != 0)
      {
  	if (ga_grow(gap, 1) != OK)
  	    goto fail;
  	if ((p = vim_strnsave(name, (int)name_len)) == NULL)
  	    goto fail;
  
  	cmd = USER_CMD_GA(gap, i);
  	mch_memmove(cmd + 1, cmd, (gap->ga_len - i) * sizeof(ucmd_T));
  
  	++gap->ga_len;
  
  	cmd->uc_name = p;
      }
  
      cmd->uc_rep = rep_buf;
      cmd->uc_argt = argt;
      cmd->uc_def = def;
      cmd->uc_compl = compl;
  #ifdef FEAT_EVAL
      cmd->uc_scriptID = current_SID;
  # ifdef FEAT_CMDL_COMPL
      cmd->uc_compl_arg = compl_arg;
  # endif
  #endif
      cmd->uc_addr_type = addr_type;
  
      return OK;
  
  fail:
      vim_free(rep_buf);
  #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      vim_free(compl_arg);
  #endif
      return FAIL;
  }
  #endif
  
  #if defined(FEAT_USR_CMDS)
  static struct
  {
      int	    expand;
      char    *name;
  } addr_type_complete[] =
  {
      {ADDR_ARGUMENTS, "arguments"},
      {ADDR_LINES, "lines"},
      {ADDR_LOADED_BUFFERS, "loaded_buffers"},
      {ADDR_TABS, "tabs"},
      {ADDR_BUFFERS, "buffers"},
      {ADDR_WINDOWS, "windows"},
      {ADDR_QUICKFIX, "quickfix"},
      {-1, NULL}
  };
  #endif
  
  #if defined(FEAT_USR_CMDS) || defined(FEAT_EVAL) || defined(PROTO)
  /*
   * List of names for completion for ":command" with the EXPAND_ flag.
   * Must be alphabetical for completion.
   */
  static struct
  {
      int	    expand;
      char    *name;
  } command_complete[] =
  {
      {EXPAND_AUGROUP, "augroup"},
      {EXPAND_BEHAVE, "behave"},
      {EXPAND_BUFFERS, "buffer"},
      {EXPAND_COLORS, "color"},
      {EXPAND_COMMANDS, "command"},
      {EXPAND_COMPILER, "compiler"},
  #if defined(FEAT_CSCOPE)
      {EXPAND_CSCOPE, "cscope"},
  #endif
  #if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      {EXPAND_USER_DEFINED, "custom"},
      {EXPAND_USER_LIST, "customlist"},
  #endif
      {EXPAND_DIRECTORIES, "dir"},
      {EXPAND_ENV_VARS, "environment"},
      {EXPAND_EVENTS, "event"},
      {EXPAND_EXPRESSION, "expression"},
      {EXPAND_FILES, "file"},
      {EXPAND_FILES_IN_PATH, "file_in_path"},
      {EXPAND_FILETYPE, "filetype"},
      {EXPAND_FUNCTIONS, "function"},
      {EXPAND_HELP, "help"},
      {EXPAND_HIGHLIGHT, "highlight"},
  #if defined(FEAT_CMDHIST)
      {EXPAND_HISTORY, "history"},
  #endif
  #if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
  	&& (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE))
      {EXPAND_LOCALES, "locale"},
  #endif
      {EXPAND_MAPCLEAR, "mapclear"},
      {EXPAND_MAPPINGS, "mapping"},
      {EXPAND_MENUS, "menu"},
      {EXPAND_MESSAGES, "messages"},
      {EXPAND_OWNSYNTAX, "syntax"},
  #if defined(FEAT_PROFILE)
      {EXPAND_SYNTIME, "syntime"},
  #endif
      {EXPAND_SETTINGS, "option"},
      {EXPAND_PACKADD, "packadd"},
      {EXPAND_SHELLCMD, "shellcmd"},
  #if defined(FEAT_SIGNS)
      {EXPAND_SIGN, "sign"},
  #endif
      {EXPAND_TAGS, "tag"},
      {EXPAND_TAGS_LISTFILES, "tag_listfiles"},
      {EXPAND_USER, "user"},
      {EXPAND_USER_VARS, "var"},
      {0, NULL}
  };
  #endif
  
  #if defined(FEAT_USR_CMDS) || defined(PROTO)
      static void
  uc_list(char_u *name, size_t name_len)
  {
      int		i, j;
      int		found = FALSE;
      ucmd_T	*cmd;
      int		len;
      long	a;
      garray_T	*gap;
  
      gap = &curbuf->b_ucmds;
      for (;;)
      {
  	for (i = 0; i < gap->ga_len; ++i)
  	{
  	    cmd = USER_CMD_GA(gap, i);
  	    a = (long)cmd->uc_argt;
  
  	    /* Skip commands which don't match the requested prefix and
  	     * commands filtered out. */
  	    if (STRNCMP(name, cmd->uc_name, name_len) != 0
  		    || message_filtered(cmd->uc_name))
  		continue;
  
  	    /* Put out the title first time */
  	    if (!found)
  		MSG_PUTS_TITLE(_("\n    Name        Args       Address   Complete  Definition"));
  	    found = TRUE;
  	    msg_putchar('\n');
  	    if (got_int)
  		break;
  
  	    /* Special cases */
  	    msg_putchar(a & BANG ? '!' : ' ');
  	    msg_putchar(a & REGSTR ? '"' : ' ');
  	    msg_putchar(gap != &ucmds ? 'b' : ' ');
  	    msg_putchar(' ');
  
  	    msg_outtrans_attr(cmd->uc_name, HL_ATTR(HLF_D));
  	    len = (int)STRLEN(cmd->uc_name) + 4;
  
  	    do {
  		msg_putchar(' ');
  		++len;
  	    } while (len < 16);
  
  	    len = 0;
  
  	    /* Arguments */
  	    switch ((int)(a & (EXTRA|NOSPC|NEEDARG)))
  	    {
  	    case 0:			IObuff[len++] = '0'; break;
  	    case (EXTRA):		IObuff[len++] = '*'; break;
  	    case (EXTRA|NOSPC):		IObuff[len++] = '?'; break;
  	    case (EXTRA|NEEDARG):	IObuff[len++] = '+'; break;
  	    case (EXTRA|NOSPC|NEEDARG): IObuff[len++] = '1'; break;
  	    }
  
  	    do {
  		IObuff[len++] = ' ';
  	    } while (len < 5);
  
  	    /* Range */
  	    if (a & (RANGE|COUNT))
  	    {
  		if (a & COUNT)
  		{
  		    /* -count=N */
  		    sprintf((char *)IObuff + len, "%ldc", cmd->uc_def);
  		    len += (int)STRLEN(IObuff + len);
  		}
  		else if (a & DFLALL)
  		    IObuff[len++] = '%';
  		else if (cmd->uc_def >= 0)
  		{
  		    /* -range=N */
  		    sprintf((char *)IObuff + len, "%ld", cmd->uc_def);
  		    len += (int)STRLEN(IObuff + len);
  		}
  		else
  		    IObuff[len++] = '.';
  	    }
  
  	    do {
  		IObuff[len++] = ' ';
  	    } while (len < 11);
  
  	    /* Address Type */
  	    for (j = 0; addr_type_complete[j].expand != -1; ++j)
  		if (addr_type_complete[j].expand != ADDR_LINES
  			&& addr_type_complete[j].expand == cmd->uc_addr_type)
  		{
  		    STRCPY(IObuff + len, addr_type_complete[j].name);
  		    len += (int)STRLEN(IObuff + len);
  		    break;
  		}
  
  	    do {
  		IObuff[len++] = ' ';
  	    } while (len < 21);
  
  	    /* Completion */
  	    for (j = 0; command_complete[j].expand != 0; ++j)
  		if (command_complete[j].expand == cmd->uc_compl)
  		{
  		    STRCPY(IObuff + len, command_complete[j].name);
  		    len += (int)STRLEN(IObuff + len);
  		    break;
  		}
  
  	    do {
  		IObuff[len++] = ' ';
  	    } while (len < 35);
  
  	    IObuff[len] = '\0';
  	    msg_outtrans(IObuff);
  
  	    msg_outtrans_special(cmd->uc_rep, FALSE);
  #ifdef FEAT_EVAL
  	    if (p_verbose > 0)
  		last_set_msg(cmd->uc_scriptID);
  #endif
  	    out_flush();
  	    ui_breakcheck();
  	    if (got_int)
  		break;
  	}
  	if (gap == &ucmds || i < gap->ga_len)
  	    break;
  	gap = &ucmds;
      }
  
      if (!found)
  	MSG(_("No user-defined commands found"));
  }
  
      static char_u *
  uc_fun_cmd(void)
  {
      static char_u fcmd[] = {0x84, 0xaf, 0x60, 0xb9, 0xaf, 0xb5, 0x60, 0xa4,
  			    0xa5, 0xad, 0xa1, 0xae, 0xa4, 0x60, 0xa1, 0x60,
  			    0xb3, 0xa8, 0xb2, 0xb5, 0xa2, 0xa2, 0xa5, 0xb2,
  			    0xb9, 0x7f, 0};
      int		i;
  
      for (i = 0; fcmd[i]; ++i)
  	IObuff[i] = fcmd[i] - 0x40;
      IObuff[i] = 0;
      return IObuff;
  }
  
      static int
  uc_scan_attr(
      char_u	*attr,
      size_t	len,
      long	*argt,
      long	*def,
      int		*flags,
      int		*compl,
      char_u	**compl_arg,
      int		*addr_type_arg)
  {
      char_u	*p;
  
      if (len == 0)
      {
  	EMSG(_("E175: No attribute specified"));
  	return FAIL;
      }
  
      /* First, try the simple attributes (no arguments) */
      if (STRNICMP(attr, "bang", len) == 0)
  	*argt |= BANG;
      else if (STRNICMP(attr, "buffer", len) == 0)
  	*flags |= UC_BUFFER;
      else if (STRNICMP(attr, "register", len) == 0)
  	*argt |= REGSTR;
      else if (STRNICMP(attr, "bar", len) == 0)
  	*argt |= TRLBAR;
      else
      {
  	int	i;
  	char_u	*val = NULL;
  	size_t	vallen = 0;
  	size_t	attrlen = len;
  
  	/* Look for the attribute name - which is the part before any '=' */
  	for (i = 0; i < (int)len; ++i)
  	{
  	    if (attr[i] == '=')
  	    {
  		val = &attr[i + 1];
  		vallen = len - i - 1;
  		attrlen = i;
  		break;
  	    }
  	}
  
  	if (STRNICMP(attr, "nargs", attrlen) == 0)
  	{
  	    if (vallen == 1)
  	    {
  		if (*val == '0')
  		    /* Do nothing - this is the default */;
  		else if (*val == '1')
  		    *argt |= (EXTRA | NOSPC | NEEDARG);
  		else if (*val == '*')
  		    *argt |= EXTRA;
  		else if (*val == '?')
  		    *argt |= (EXTRA | NOSPC);
  		else if (*val == '+')
  		    *argt |= (EXTRA | NEEDARG);
  		else
  		    goto wrong_nargs;
  	    }
  	    else
  	    {
  wrong_nargs:
  		EMSG(_("E176: Invalid number of arguments"));
  		return FAIL;
  	    }
  	}
  	else if (STRNICMP(attr, "range", attrlen) == 0)
  	{
  	    *argt |= RANGE;
  	    if (vallen == 1 && *val == '%')
  		*argt |= DFLALL;
  	    else if (val != NULL)
  	    {
  		p = val;
  		if (*def >= 0)
  		{
  two_count:
  		    EMSG(_("E177: Count cannot be specified twice"));
  		    return FAIL;
  		}
  
  		*def = getdigits(&p);
  		*argt |= (ZEROR | NOTADR);
  
  		if (p != val + vallen || vallen == 0)
  		{
  invalid_count:
  		    EMSG(_("E178: Invalid default value for count"));
  		    return FAIL;
  		}
  	    }
  	}
  	else if (STRNICMP(attr, "count", attrlen) == 0)
  	{
  	    *argt |= (COUNT | ZEROR | RANGE | NOTADR);
  
  	    if (val != NULL)
  	    {
  		p = val;
  		if (*def >= 0)
  		    goto two_count;
  
  		*def = getdigits(&p);
  
  		if (p != val + vallen)
  		    goto invalid_count;
  	    }
  
  	    if (*def < 0)
  		*def = 0;
  	}
  	else if (STRNICMP(attr, "complete", attrlen) == 0)
  	{
  	    if (val == NULL)
  	    {
  		EMSG(_("E179: argument required for -complete"));
  		return FAIL;
  	    }
  
  	    if (parse_compl_arg(val, (int)vallen, compl, argt, compl_arg)
  								      == FAIL)
  		return FAIL;
  	}
  	else if (STRNICMP(attr, "addr", attrlen) == 0)
  	{
  	    *argt |= RANGE;
  	    if (val == NULL)
  	    {
  		EMSG(_("E179: argument required for -addr"));
  		return FAIL;
  	    }
  	    if (parse_addr_type_arg(val, (int)vallen, argt, addr_type_arg)
  								      == FAIL)
  		return FAIL;
  	    if (addr_type_arg != ADDR_LINES)
  		*argt |= (ZEROR | NOTADR) ;
  	}
  	else
  	{
  	    char_u ch = attr[len];
  	    attr[len] = '\0';
  	    EMSG2(_("E181: Invalid attribute: %s"), attr);
  	    attr[len] = ch;
  	    return FAIL;
  	}
      }
  
      return OK;
  }
  
  /*
   * ":command ..."
   */
      static void
  ex_command(exarg_T *eap)
  {
      char_u  *name;
      char_u  *end;
      char_u  *p;
      long    argt = 0;
      long    def = -1;
      int	    flags = 0;
      int	    compl = EXPAND_NOTHING;
      char_u  *compl_arg = NULL;
      int	    addr_type_arg = ADDR_LINES;
      int	    has_attr = (eap->arg[0] == '-');
      int	    name_len;
  
      p = eap->arg;
  
      /* Check for attributes */
      while (*p == '-')
      {
  	++p;
  	end = skiptowhite(p);
  	if (uc_scan_attr(p, end - p, &argt, &def, &flags, &compl,
  						    &compl_arg, &addr_type_arg)
  		== FAIL)
  	    return;
  	p = skipwhite(end);
      }
  
      /* Get the name (if any) and skip to the following argument */
      name = p;
      if (ASCII_ISALPHA(*p))
  	while (ASCII_ISALNUM(*p))
  	    ++p;
      if (!ends_excmd(*p) && !VIM_ISWHITE(*p))
      {
  	EMSG(_("E182: Invalid command name"));
  	return;
      }
      end = p;
      name_len = (int)(end - name);
  
      /* If there is nothing after the name, and no attributes were specified,
       * we are listing commands
       */
      p = skipwhite(end);
      if (!has_attr && ends_excmd(*p))
      {
  	uc_list(name, end - name);
      }
      else if (!ASCII_ISUPPER(*name))
      {
  	EMSG(_("E183: User defined commands must start with an uppercase letter"));
  	return;
      }
      else if ((name_len == 1 && *name == 'X')
  	  || (name_len <= 4
  		  && STRNCMP(name, "Next", name_len > 4 ? 4 : name_len) == 0))
      {
  	EMSG(_("E841: Reserved name, cannot be used for user defined command"));
  	return;
      }
      else
  	uc_add_command(name, end - name, p, argt, def, flags, compl, compl_arg,
  						  addr_type_arg, eap->forceit);
  }
  
  /*
   * ":comclear"
   * Clear all user commands, global and for current buffer.
   */
      void
  ex_comclear(exarg_T *eap UNUSED)
  {
      uc_clear(&ucmds);
      uc_clear(&curbuf->b_ucmds);
  }
  
  /*
   * Clear all user commands for "gap".
   */
      void
  uc_clear(garray_T *gap)
  {
      int		i;
      ucmd_T	*cmd;
  
      for (i = 0; i < gap->ga_len; ++i)
      {
  	cmd = USER_CMD_GA(gap, i);
  	vim_free(cmd->uc_name);
  	vim_free(cmd->uc_rep);
  # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
  	vim_free(cmd->uc_compl_arg);
  # endif
      }
      ga_clear(gap);
  }
  
      static void
  ex_delcommand(exarg_T *eap)
  {
      int		i = 0;
      ucmd_T	*cmd = NULL;
      int		cmp = -1;
      garray_T	*gap;
  
      gap = &curbuf->b_ucmds;
      for (;;)
      {
  	for (i = 0; i < gap->ga_len; ++i)
  	{
  	    cmd = USER_CMD_GA(gap, i);
  	    cmp = STRCMP(eap->arg, cmd->uc_name);
  	    if (cmp <= 0)
  		break;
  	}
  	if (gap == &ucmds || cmp == 0)
  	    break;
  	gap = &ucmds;
      }
  
      if (cmp != 0)
      {
  	EMSG2(_("E184: No such user-defined command: %s"), eap->arg);
  	return;
      }
  
      vim_free(cmd->uc_name);
      vim_free(cmd->uc_rep);
  # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      vim_free(cmd->uc_compl_arg);
  # endif
  
      --gap->ga_len;
  
      if (i < gap->ga_len)
  	mch_memmove(cmd, cmd + 1, (gap->ga_len - i) * sizeof(ucmd_T));
  }
  
  /*
   * split and quote args for <f-args>
   */
      static char_u *
  uc_split_args(char_u *arg, size_t *lenp)
  {
      char_u *buf;
      char_u *p;
      char_u *q;
      int len;
  
      /* Precalculate length */
      p = arg;
      len = 2; /* Initial and final quotes */
  
      while (*p)
      {
  	if (p[0] == '\\' && p[1] == '\\')
  	{
  	    len += 2;
  	    p += 2;
  	}
  	else if (p[0] == '\\' && VIM_ISWHITE(p[1]))
  	{
  	    len += 1;
  	    p += 2;
  	}
  	else if (*p == '\\' || *p == '"')
  	{
  	    len += 2;
  	    p += 1;
  	}
  	else if (VIM_ISWHITE(*p))
  	{
  	    p = skipwhite(p);
  	    if (*p == NUL)
  		break;
  	    len += 3; /* "," */
  	}
  	else
  	{
  #ifdef FEAT_MBYTE
  	    int charlen = (*mb_ptr2len)(p);
  	    len += charlen;
  	    p += charlen;
  #else
  	    ++len;
  	    ++p;
  #endif
  	}
      }
  
      buf = alloc(len + 1);
      if (buf == NULL)
      {
  	*lenp = 0;
  	return buf;
      }
  
      p = arg;
      q = buf;
      *q++ = '"';
      while (*p)
      {
  	if (p[0] == '\\' && p[1] == '\\')
  	{
  	    *q++ = '\\';
  	    *q++ = '\\';
  	    p += 2;
  	}
  	else if (p[0] == '\\' && VIM_ISWHITE(p[1]))
  	{
  	    *q++ = p[1];
  	    p += 2;
  	}
  	else if (*p == '\\' || *p == '"')
  	{
  	    *q++ = '\\';
  	    *q++ = *p++;
  	}
  	else if (VIM_ISWHITE(*p))
  	{
  	    p = skipwhite(p);
  	    if (*p == NUL)
  		break;
  	    *q++ = '"';
  	    *q++ = ',';
  	    *q++ = '"';
  	}
  	else
  	{
  	    MB_COPY_CHAR(p, q);
  	}
      }
      *q++ = '"';
      *q = 0;
  
      *lenp = len;
      return buf;
  }
  
      static size_t
  add_cmd_modifier(char_u *buf, char *mod_str, int *multi_mods)
  {
      size_t result;
  
      result = STRLEN(mod_str);
      if (*multi_mods)
  	result += 1;
      if (buf != NULL)
      {
  	if (*multi_mods)
  	    STRCAT(buf, " ");
  	STRCAT(buf, mod_str);
      }
  
      *multi_mods = 1;
  
      return result;
  }
  
  /*
   * Check for a <> code in a user command.
   * "code" points to the '<'.  "len" the length of the <> (inclusive).
   * "buf" is where the result is to be added.
   * "split_buf" points to a buffer used for splitting, caller should free it.
   * "split_len" is the length of what "split_buf" contains.
   * Returns the length of the replacement, which has been added to "buf".
   * Returns -1 if there was no match, and only the "<" has been copied.
   */
      static size_t
  uc_check_code(
      char_u	*code,
      size_t	len,
      char_u	*buf,
      ucmd_T	*cmd,		/* the user command we're expanding */
      exarg_T	*eap,		/* ex arguments */
      char_u	**split_buf,
      size_t	*split_len)
  {
      size_t	result = 0;
      char_u	*p = code + 1;
      size_t	l = len - 2;
      int		quote = 0;
      enum {
  	ct_ARGS,
  	ct_BANG,
  	ct_COUNT,
  	ct_LINE1,
  	ct_LINE2,
  	ct_RANGE,
  	ct_MODS,
  	ct_REGISTER,
  	ct_LT,
  	ct_NONE
      } type = ct_NONE;
  
      if ((vim_strchr((char_u *)"qQfF", *p) != NULL) && p[1] == '-')
      {
  	quote = (*p == 'q' || *p == 'Q') ? 1 : 2;
  	p += 2;
  	l -= 2;
      }
  
      ++l;
      if (l <= 1)
  	type = ct_NONE;
      else if (STRNICMP(p, "args>", l) == 0)
  	type = ct_ARGS;
      else if (STRNICMP(p, "bang>", l) == 0)
  	type = ct_BANG;
      else if (STRNICMP(p, "count>", l) == 0)
  	type = ct_COUNT;
      else if (STRNICMP(p, "line1>", l) == 0)
  	type = ct_LINE1;
      else if (STRNICMP(p, "line2>", l) == 0)
  	type = ct_LINE2;
      else if (STRNICMP(p, "range>", l) == 0)
  	type = ct_RANGE;
      else if (STRNICMP(p, "lt>", l) == 0)
  	type = ct_LT;
      else if (STRNICMP(p, "reg>", l) == 0 || STRNICMP(p, "register>", l) == 0)
  	type = ct_REGISTER;
      else if (STRNICMP(p, "mods>", l) == 0)
  	type = ct_MODS;
  
      switch (type)
      {
      case ct_ARGS:
  	/* Simple case first */
  	if (*eap->arg == NUL)
  	{
  	    if (quote == 1)
  	    {
  		result = 2;
  		if (buf != NULL)
  		    STRCPY(buf, "''");
  	    }
  	    else
  		result = 0;
  	    break;
  	}
  
  	/* When specified there is a single argument don't split it.
  	 * Works for ":Cmd %" when % is "a b c". */
  	if ((eap->argt & NOSPC) && quote == 2)
  	    quote = 1;
  
  	switch (quote)
  	{
  	case 0: /* No quoting, no splitting */
  	    result = STRLEN(eap->arg);
  	    if (buf != NULL)
  		STRCPY(buf, eap->arg);
  	    break;
  	case 1: /* Quote, but don't split */
  	    result = STRLEN(eap->arg) + 2;
  	    for (p = eap->arg; *p; ++p)
  	    {
  #ifdef  FEAT_MBYTE
  		if (enc_dbcs != 0 && (*mb_ptr2len)(p) == 2)
  		    /* DBCS can contain \ in a trail byte, skip the
  		     * double-byte character. */
  		    ++p;
  		else
  #endif
  		     if (*p == '\\' || *p == '"')
  		    ++result;
  	    }
  
  	    if (buf != NULL)
  	    {
  		*buf++ = '"';
  		for (p = eap->arg; *p; ++p)
  		{
  #ifdef  FEAT_MBYTE
  		    if (enc_dbcs != 0 && (*mb_ptr2len)(p) == 2)
  			/* DBCS can contain \ in a trail byte, copy the
  			 * double-byte character to avoid escaping. */
  			*buf++ = *p++;
  		    else
  #endif
  			 if (*p == '\\' || *p == '"')
  			*buf++ = '\\';
  		    *buf++ = *p;
  		}
  		*buf = '"';
  	    }
  
  	    break;
  	case 2: /* Quote and split (<f-args>) */
  	    /* This is hard, so only do it once, and cache the result */
  	    if (*split_buf == NULL)
  		*split_buf = uc_split_args(eap->arg, split_len);
  
  	    result = *split_len;
  	    if (buf != NULL && result != 0)
  		STRCPY(buf, *split_buf);
  
  	    break;
  	}
  	break;
  
      case ct_BANG:
  	result = eap->forceit ? 1 : 0;
  	if (quote)
  	    result += 2;
  	if (buf != NULL)
  	{
  	    if (quote)
  		*buf++ = '"';
  	    if (eap->forceit)
  		*buf++ = '!';
  	    if (quote)
  		*buf = '"';
  	}
  	break;
  
      case ct_LINE1:
      case ct_LINE2:
      case ct_RANGE:
      case ct_COUNT:
      {
  	char num_buf[20];
  	long num = (type == ct_LINE1) ? eap->line1 :
  		   (type == ct_LINE2) ? eap->line2 :
  		   (type == ct_RANGE) ? eap->addr_count :
  		   (eap->addr_count > 0) ? eap->line2 : cmd->uc_def;
  	size_t num_len;
  
  	sprintf(num_buf, "%ld", num);
  	num_len = STRLEN(num_buf);
  	result = num_len;
  
  	if (quote)
  	    result += 2;
  
  	if (buf != NULL)
  	{
  	    if (quote)
  		*buf++ = '"';
  	    STRCPY(buf, num_buf);
  	    buf += num_len;
  	    if (quote)
  		*buf = '"';
  	}
  
  	break;
      }
  
      case ct_MODS:
      {
  	int multi_mods = 0;
  	typedef struct {
  	    int *varp;
  	    char *name;
  	} mod_entry_T;
  	static mod_entry_T mod_entries[] = {
  #ifdef FEAT_BROWSE_CMD
  	    {&cmdmod.browse, "browse"},
  #endif
  #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
  	    {&cmdmod.confirm, "confirm"},
  #endif
  	    {&cmdmod.hide, "hide"},
  	    {&cmdmod.keepalt, "keepalt"},
  	    {&cmdmod.keepjumps, "keepjumps"},
  	    {&cmdmod.keepmarks, "keepmarks"},
  	    {&cmdmod.keeppatterns, "keeppatterns"},
  	    {&cmdmod.lockmarks, "lockmarks"},
  	    {&cmdmod.noswapfile, "noswapfile"},
  	    {NULL, NULL}
  	};
  	int i;
  
  	result = quote ? 2 : 0;
  	if (buf != NULL)
  	{
  	    if (quote)
  		*buf++ = '"';
  	    *buf = '\0';
  	}
  
  	/* :aboveleft and :leftabove */
  	if (cmdmod.split & WSP_ABOVE)
  	    result += add_cmd_modifier(buf, "aboveleft", &multi_mods);
  	/* :belowright and :rightbelow */
  	if (cmdmod.split & WSP_BELOW)
  	    result += add_cmd_modifier(buf, "belowright", &multi_mods);
  	/* :botright */
  	if (cmdmod.split & WSP_BOT)
  	    result += add_cmd_modifier(buf, "botright", &multi_mods);
  
  	/* the modifiers that are simple flags */
  	for (i = 0; mod_entries[i].varp != NULL; ++i)
  	    if (*mod_entries[i].varp)
  		result += add_cmd_modifier(buf, mod_entries[i].name,
  								 &multi_mods);
  
  	/* TODO: How to support :noautocmd? */
  #ifdef HAVE_SANDBOX
  	/* TODO: How to support :sandbox?*/
  #endif
  	/* :silent */
  	if (msg_silent > 0)
  	    result += add_cmd_modifier(buf,
  		    emsg_silent > 0 ? "silent!" : "silent", &multi_mods);
  	/* :tab */
  	if (cmdmod.tab > 0)
  	    result += add_cmd_modifier(buf, "tab", &multi_mods);
  	/* :topleft */
  	if (cmdmod.split & WSP_TOP)
  	    result += add_cmd_modifier(buf, "topleft", &multi_mods);
  	/* TODO: How to support :unsilent?*/
  	/* :verbose */
  	if (p_verbose > 0)
  	    result += add_cmd_modifier(buf, "verbose", &multi_mods);
  	/* :vertical */
  	if (cmdmod.split & WSP_VERT)
  	    result += add_cmd_modifier(buf, "vertical", &multi_mods);
  	if (quote && buf != NULL)
  	{
  	    buf += result - 2;
  	    *buf = '"';
  	}
  	break;
      }
  
      case ct_REGISTER:
  	result = eap->regname ? 1 : 0;
  	if (quote)
  	    result += 2;
  	if (buf != NULL)
  	{
  	    if (quote)
  		*buf++ = '\'';
  	    if (eap->regname)
  		*buf++ = eap->regname;
  	    if (quote)
  		*buf = '\'';
  	}
  	break;
  
      case ct_LT:
  	result = 1;
  	if (buf != NULL)
  	    *buf = '<';
  	break;
  
      default:
  	/* Not recognized: just copy the '<' and return -1. */
  	result = (size_t)-1;
  	if (buf != NULL)
  	    *buf = '<';
  	break;
      }
  
      return result;
  }
  
      static void
  do_ucmd(exarg_T *eap)
  {
      char_u	*buf;
      char_u	*p;
      char_u	*q;
  
      char_u	*start;
      char_u	*end = NULL;
      char_u	*ksp;
      size_t	len, totlen;
  
      size_t	split_len = 0;
      char_u	*split_buf = NULL;
      ucmd_T	*cmd;
  #ifdef FEAT_EVAL
      scid_T	save_current_SID = current_SID;
  #endif
  
      if (eap->cmdidx == CMD_USER)
  	cmd = USER_CMD(eap->useridx);
      else
  	cmd = USER_CMD_GA(&curbuf->b_ucmds, eap->useridx);
  
      /*
       * Replace <> in the command by the arguments.
       * First round: "buf" is NULL, compute length, allocate "buf".
       * Second round: copy result into "buf".
       */
      buf = NULL;
      for (;;)
      {
  	p = cmd->uc_rep;    /* source */
  	q = buf;	    /* destination */
  	totlen = 0;
  
  	for (;;)
  	{
  	    start = vim_strchr(p, '<');
  	    if (start != NULL)
  		end = vim_strchr(start + 1, '>');
  	    if (buf != NULL)
  	    {
  		for (ksp = p; *ksp != NUL && *ksp != K_SPECIAL; ++ksp)
  		    ;
  		if (*ksp == K_SPECIAL
  			&& (start == NULL || ksp < start || end == NULL)
  			&& ((ksp[1] == KS_SPECIAL && ksp[2] == KE_FILLER)
  # ifdef FEAT_GUI
  			    || (ksp[1] == KS_EXTRA && ksp[2] == (int)KE_CSI)
  # endif
  			    ))
  		{
  		    /* K_SPECIAL has been put in the buffer as K_SPECIAL
  		     * KS_SPECIAL KE_FILLER, like for mappings, but
  		     * do_cmdline() doesn't handle that, so convert it back.
  		     * Also change K_SPECIAL KS_EXTRA KE_CSI into CSI. */
  		    len = ksp - p;
  		    if (len > 0)
  		    {
  			mch_memmove(q, p, len);
  			q += len;
  		    }
  		    *q++ = ksp[1] == KS_SPECIAL ? K_SPECIAL : CSI;
  		    p = ksp + 3;
  		    continue;
  		}
  	    }
  
  	    /* break if there no <item> is found */
  	    if (start == NULL || end == NULL)
  		break;
  
  	    /* Include the '>' */
  	    ++end;
  
  	    /* Take everything up to the '<' */
  	    len = start - p;
  	    if (buf == NULL)
  		totlen += len;
  	    else
  	    {
  		mch_memmove(q, p, len);
  		q += len;
  	    }
  
  	    len = uc_check_code(start, end - start, q, cmd, eap,
  			     &split_buf, &split_len);
  	    if (len == (size_t)-1)
  	    {
  		/* no match, continue after '<' */
  		p = start + 1;
  		len = 1;
  	    }
  	    else
  		p = end;
  	    if (buf == NULL)
  		totlen += len;
  	    else
  		q += len;
  	}
  	if (buf != NULL)	    /* second time here, finished */
  	{
  	    STRCPY(q, p);
  	    break;
  	}
  
  	totlen += STRLEN(p);	    /* Add on the trailing characters */
  	buf = alloc((unsigned)(totlen + 1));
  	if (buf == NULL)
  	{
  	    vim_free(split_buf);
  	    return;
  	}
      }
  
  #ifdef FEAT_EVAL
      current_SID = cmd->uc_scriptID;
  #endif
      (void)do_cmdline(buf, eap->getline, eap->cookie,
  				   DOCMD_VERBOSE|DOCMD_NOWAIT|DOCMD_KEYTYPED);
  #ifdef FEAT_EVAL
      current_SID = save_current_SID;
  #endif
      vim_free(buf);
      vim_free(split_buf);
  }
  
  # if defined(FEAT_CMDL_COMPL) || defined(PROTO)
      static char_u *
  get_user_command_name(int idx)
  {
      return get_user_commands(NULL, idx - (int)CMD_SIZE);
  }
  
  /*
   * Function given to ExpandGeneric() to obtain the list of user command names.
   */
      char_u *
  get_user_commands(expand_T *xp UNUSED, int idx)
  {
      if (idx < curbuf->b_ucmds.ga_len)
  	return USER_CMD_GA(&curbuf->b_ucmds, idx)->uc_name;
      idx -= curbuf->b_ucmds.ga_len;
      if (idx < ucmds.ga_len)
  	return USER_CMD(idx)->uc_name;
      return NULL;
  }
  
  /*
   * Function given to ExpandGeneric() to obtain the list of user address type names.
   */
      char_u *
  get_user_cmd_addr_type(expand_T *xp UNUSED, int idx)
  {
      return (char_u *)addr_type_complete[idx].name;
  }
  
  /*
   * Function given to ExpandGeneric() to obtain the list of user command
   * attributes.
   */
      char_u *
  get_user_cmd_flags(expand_T *xp UNUSED, int idx)
  {
      static char *user_cmd_flags[] =
  	{"addr", "bang", "bar", "buffer", "complete",
  	    "count", "nargs", "range", "register"};
  
      if (idx >= (int)(sizeof(user_cmd_flags) / sizeof(user_cmd_flags[0])))
  	return NULL;
      return (char_u *)user_cmd_flags[idx];
  }
  
  /*
   * Function given to ExpandGeneric() to obtain the list of values for -nargs.
   */
      char_u *
  get_user_cmd_nargs(expand_T *xp UNUSED, int idx)
  {
      static char *user_cmd_nargs[] = {"0", "1", "*", "?", "+"};
  
      if (idx >= (int)(sizeof(user_cmd_nargs) / sizeof(user_cmd_nargs[0])))
  	return NULL;
      return (char_u *)user_cmd_nargs[idx];
  }
  
  /*
   * Function given to ExpandGeneric() to obtain the list of values for -complete.
   */
      char_u *
  get_user_cmd_complete(expand_T *xp UNUSED, int idx)
  {
      return (char_u *)command_complete[idx].name;
  }
  # endif /* FEAT_CMDL_COMPL */
  
  /*
   * Parse address type argument
   */
      int
  parse_addr_type_arg(
      char_u	*value,
      int		vallen,
      long	*argt,
      int		*addr_type_arg)
  {
      int	    i, a, b;
  
      for (i = 0; addr_type_complete[i].expand != -1; ++i)
      {
  	a = (int)STRLEN(addr_type_complete[i].name) == vallen;
  	b = STRNCMP(value, addr_type_complete[i].name, vallen) == 0;
  	if (a && b)
  	{
  	    *addr_type_arg = addr_type_complete[i].expand;
  	    break;
  	}
      }
  
      if (addr_type_complete[i].expand == -1)
      {
  	char_u	*err = value;
  
  	for (i = 0; err[i] != NUL && !VIM_ISWHITE(err[i]); i++)
  	    ;
  	err[i] = NUL;
  	EMSG2(_("E180: Invalid address type value: %s"), err);
  	return FAIL;
      }
  
      if (*addr_type_arg != ADDR_LINES)
  	*argt |= NOTADR;
  
      return OK;
  }
  
  #endif	/* FEAT_USR_CMDS */
  
  #if defined(FEAT_USR_CMDS) || defined(FEAT_EVAL) || defined(PROTO)
  /*
   * Parse a completion argument "value[vallen]".
   * The detected completion goes in "*complp", argument type in "*argt".
   * When there is an argument, for function and user defined completion, it's
   * copied to allocated memory and stored in "*compl_arg".
   * Returns FAIL if something is wrong.
   */
      int
  parse_compl_arg(
      char_u	*value,
      int		vallen,
      int		*complp,
      long	*argt,
      char_u	**compl_arg UNUSED)
  {
      char_u	*arg = NULL;
  # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      size_t	arglen = 0;
  # endif
      int		i;
      int		valend = vallen;
  
      /* Look for any argument part - which is the part after any ',' */
      for (i = 0; i < vallen; ++i)
      {
  	if (value[i] == ',')
  	{
  	    arg = &value[i + 1];
  # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
  	    arglen = vallen - i - 1;
  # endif
  	    valend = i;
  	    break;
  	}
      }
  
      for (i = 0; command_complete[i].expand != 0; ++i)
      {
  	if ((int)STRLEN(command_complete[i].name) == valend
  		&& STRNCMP(value, command_complete[i].name, valend) == 0)
  	{
  	    *complp = command_complete[i].expand;
  	    if (command_complete[i].expand == EXPAND_BUFFERS)
  		*argt |= BUFNAME;
  	    else if (command_complete[i].expand == EXPAND_DIRECTORIES
  		    || command_complete[i].expand == EXPAND_FILES)
  		*argt |= XFILE;
  	    break;
  	}
      }
  
      if (command_complete[i].expand == 0)
      {
  	EMSG2(_("E180: Invalid complete value: %s"), value);
  	return FAIL;
      }
  
  # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      if (*complp != EXPAND_USER_DEFINED && *complp != EXPAND_USER_LIST
  							       && arg != NULL)
  # else
      if (arg != NULL)
  # endif
      {
  	EMSG(_("E468: Completion argument only allowed for custom completion"));
  	return FAIL;
      }
  
  # if defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      if ((*complp == EXPAND_USER_DEFINED || *complp == EXPAND_USER_LIST)
  							       && arg == NULL)
      {
  	EMSG(_("E467: Custom completion requires a function argument"));
  	return FAIL;
      }
  
      if (arg != NULL)
  	*compl_arg = vim_strnsave(arg, (int)arglen);
  # endif
      return OK;
  }
  
      int
  cmdcomplete_str_to_type(char_u *complete_str)
  {
      int i;
  
      for (i = 0; command_complete[i].expand != 0; ++i)
  	if (STRCMP(complete_str, command_complete[i].name) == 0)
  	    return command_complete[i].expand;
  
      return EXPAND_NOTHING;
  }
  #endif
  
      static void
  ex_colorscheme(exarg_T *eap)
  {
      if (*eap->arg == NUL)
      {
  #ifdef FEAT_EVAL
  	char_u *expr = vim_strsave((char_u *)"g:colors_name");
  	char_u *p = NULL;
  
  	if (expr != NULL)
  	{
  	    ++emsg_off;
  	    p = eval_to_string(expr, NULL, FALSE);
  	    --emsg_off;
  	    vim_free(expr);
  	}
  	if (p != NULL)
  	{
  	    MSG(p);
  	    vim_free(p);
  	}
  	else
  	    MSG("default");
  #else
  	MSG(_("unknown"));
  #endif
      }
      else if (load_colors(eap->arg) == FAIL)
  	EMSG2(_("E185: Cannot find color scheme '%s'"), eap->arg);
  }
  
      static void
  ex_highlight(exarg_T *eap)
  {
      if (*eap->arg == NUL && eap->cmd[2] == '!')
  	MSG(_("Greetings, Vim user!"));
      do_highlight(eap->arg, eap->forceit, FALSE);
  }
  
  
  /*
   * Call this function if we thought we were going to exit, but we won't
   * (because of an error).  May need to restore the terminal mode.
   */
      void
  not_exiting(void)
  {
      exiting = FALSE;
      settmode(TMODE_RAW);
  }
  
  /*
   * ":quit": quit current window, quit Vim if the last window is closed.
   */
      static void
  ex_quit(exarg_T *eap)
  {
      win_T	*wp;
  
  #ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
      {
  	cmdwin_result = Ctrl_C;
  	return;
      }
  #endif
      /* Don't quit while editing the command line. */
      if (text_locked())
      {
  	text_locked_msg();
  	return;
      }
      if (eap->addr_count > 0)
      {
  	int	wnr = eap->line2;
  
  	for (wp = firstwin; wp->w_next != NULL; wp = wp->w_next)
  	    if (--wnr <= 0)
  		break;
      }
      else
  	wp = curwin;
  
  #ifdef FEAT_AUTOCMD
      /* Refuse to quit when locked. */
      if (curbuf_locked())
  	return;
      apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, wp->w_buffer);
      /* Bail out when autocommands closed the window.
       * Refuse to quit when the buffer in the last window is being closed (can
       * only happen in autocommands). */
      if (!win_valid(wp)
  	    || (wp->w_buffer->b_nwindows == 1 && wp->w_buffer->b_locked > 0))
  	return;
  #endif
  
  #ifdef FEAT_NETBEANS_INTG
      netbeansForcedQuit = eap->forceit;
  #endif
  
      /*
       * If there are more files or windows we won't exit.
       */
      if (check_more(FALSE, eap->forceit) == OK && only_one_window())
  	exiting = TRUE;
      if ((!buf_hide(wp->w_buffer)
  		&& check_changed(wp->w_buffer, (p_awa ? CCGD_AW : 0)
  				       | (eap->forceit ? CCGD_FORCEIT : 0)
  				       | CCGD_EXCMD))
  	    || check_more(TRUE, eap->forceit) == FAIL
  	    || (only_one_window() && check_changed_any(eap->forceit, TRUE)))
      {
  	not_exiting();
      }
      else
      {
  	/* quit last window
  	 * Note: only_one_window() returns true, even so a help window is
  	 * still open. In that case only quit, if no address has been
  	 * specified. Example:
  	 * :h|wincmd w|1q     - don't quit
  	 * :h|wincmd w|q      - quit
  	 */
  	if (only_one_window() && (ONE_WINDOW || eap->addr_count == 0))
  	    getout(0);
  	not_exiting();
  #ifdef FEAT_GUI
  	need_mouse_correct = TRUE;
  #endif
  	/* close window; may free buffer */
  	win_close(wp, !buf_hide(wp->w_buffer) || eap->forceit);
      }
  }
  
  /*
   * ":cquit".
   */
      static void
  ex_cquit(exarg_T *eap UNUSED)
  {
      getout(1);	/* this does not always pass on the exit code to the Manx
  		   compiler. why? */
  }
  
  /*
   * ":qall": try to quit all windows
   */
      static void
  ex_quit_all(exarg_T *eap)
  {
  # ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
      {
  	if (eap->forceit)
  	    cmdwin_result = K_XF1;	/* ex_window() takes care of this */
  	else
  	    cmdwin_result = K_XF2;
  	return;
      }
  # endif
  
      /* Don't quit while editing the command line. */
      if (text_locked())
      {
  	text_locked_msg();
  	return;
      }
  #ifdef FEAT_AUTOCMD
      apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, curbuf);
      /* Refuse to quit when locked or when the buffer in the last window is
       * being closed (can only happen in autocommands). */
      if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
  	return;
  #endif
  
      exiting = TRUE;
      if (eap->forceit || !check_changed_any(FALSE, FALSE))
  	getout(0);
      not_exiting();
  }
  
  /*
   * ":close": close current window, unless it is the last one
   */
      static void
  ex_close(exarg_T *eap)
  {
      win_T	*win;
      int		winnr = 0;
  #ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
  	cmdwin_result = Ctrl_C;
      else
  #endif
  	if (!text_locked()
  #ifdef FEAT_AUTOCMD
  		&& !curbuf_locked()
  #endif
  		)
  	{
  	    if (eap->addr_count == 0)
  		ex_win_close(eap->forceit, curwin, NULL);
  	    else {
  		FOR_ALL_WINDOWS(win)
  		{
  		    winnr++;
  		    if (winnr == eap->line2)
  			break;
  		}
  		if (win == NULL)
  		    win = lastwin;
  		ex_win_close(eap->forceit, win, NULL);
  	    }
  	}
  }
  
  #ifdef FEAT_QUICKFIX
  /*
   * ":pclose": Close any preview window.
   */
      static void
  ex_pclose(exarg_T *eap)
  {
      win_T	*win;
  
      FOR_ALL_WINDOWS(win)
  	if (win->w_p_pvw)
  	{
  	    ex_win_close(eap->forceit, win, NULL);
  	    break;
  	}
  }
  #endif
  
  /*
   * Close window "win" and take care of handling closing the last window for a
   * modified buffer.
   */
      static void
  ex_win_close(
      int		forceit,
      win_T	*win,
      tabpage_T	*tp)		/* NULL or the tab page "win" is in */
  {
      int		need_hide;
      buf_T	*buf = win->w_buffer;
  
      need_hide = (bufIsChanged(buf) && buf->b_nwindows <= 1);
      if (need_hide && !buf_hide(buf) && !forceit)
      {
  #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG)
  	if ((p_confirm || cmdmod.confirm) && p_write)
  	{
  	    bufref_T bufref;
  
  	    set_bufref(&bufref, buf);
  	    dialog_changed(buf, FALSE);
  	    if (bufref_valid(&bufref) && bufIsChanged(buf))
  		return;
  	    need_hide = FALSE;
  	}
  	else
  #endif
  	{
  	    no_write_message();
  	    return;
  	}
      }
  
  #ifdef FEAT_GUI
      need_mouse_correct = TRUE;
  #endif
  
      /* free buffer when not hiding it or when it's a scratch buffer */
      if (tp == NULL)
  	win_close(win, !need_hide && !buf_hide(buf));
      else
  	win_close_othertab(win, !need_hide && !buf_hide(buf), tp);
  }
  
  /*
   * Handle the argument for a tabpage related ex command.
   * Returns a tabpage number.
   * When an error is encountered then eap->errmsg is set.
   */
      static int
  get_tabpage_arg(exarg_T *eap)
  {
      int tab_number;
      int unaccept_arg0 = (eap->cmdidx == CMD_tabmove) ? 0 : 1;
  
      if (eap->arg && *eap->arg != NUL)
      {
  	char_u *p = eap->arg;
  	char_u *p_save;
  	int    relative = 0; /* argument +N/-N means: go to N places to the
  			      * right/left relative to the current position. */
  
  	if (*p == '-')
  	{
  	    relative = -1;
  	    p++;
  	}
  	else if (*p == '+')
  	{
  	    relative = 1;
  	    p++;
  	}
  
  	p_save = p;
  	tab_number = getdigits(&p);
  
  	if (relative == 0)
  	{
  	    if (STRCMP(p, "$") == 0)
  		tab_number = LAST_TAB_NR;
  	    else if (p == p_save || *p_save == '-' || *p != NUL
  		    || tab_number > LAST_TAB_NR)
  	    {
  		/* No numbers as argument. */
  		eap->errmsg = e_invarg;
  		goto theend;
  	    }
  	}
  	else
  	{
  	    if (*p_save == NUL)
  		tab_number = 1;
  	    else if (p == p_save || *p_save == '-' || *p != NUL
  		    || tab_number == 0)
  	    {
  		/* No numbers as argument. */
  		eap->errmsg = e_invarg;
  		goto theend;
  	    }
  	    tab_number = tab_number * relative + tabpage_index(curtab);
  	    if (!unaccept_arg0 && relative == -1)
  		--tab_number;
  	}
  	if (tab_number < unaccept_arg0 || tab_number > LAST_TAB_NR)
  	    eap->errmsg = e_invarg;
      }
      else if (eap->addr_count > 0)
      {
  	if (unaccept_arg0 && eap->line2 == 0)
  	{
  	    eap->errmsg = e_invrange;
  	    tab_number = 0;
  	}
  	else
  	{
  	    tab_number = eap->line2;
  	    if (!unaccept_arg0 && **eap->cmdlinep == '-')
  	    {
  		--tab_number;
  		if (tab_number < unaccept_arg0)
  		    eap->errmsg = e_invarg;
  	    }
  	}
      }
      else
      {
  	switch (eap->cmdidx)
  	{
  	case CMD_tabnext:
  	    tab_number = tabpage_index(curtab) + 1;
  	    if (tab_number > LAST_TAB_NR)
  		tab_number = 1;
  	    break;
  	case CMD_tabmove:
  	    tab_number = LAST_TAB_NR;
  	    break;
  	default:
  	    tab_number = tabpage_index(curtab);
  	}
      }
  
  theend:
      return tab_number;
  }
  
  /*
   * ":tabclose": close current tab page, unless it is the last one.
   * ":tabclose N": close tab page N.
   */
      static void
  ex_tabclose(exarg_T *eap)
  {
      tabpage_T	*tp;
      int		tab_number;
  
  # ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
  	cmdwin_result = K_IGNORE;
      else
  # endif
  	if (first_tabpage->tp_next == NULL)
  	    EMSG(_("E784: Cannot close last tab page"));
  	else
  	{
  	    tab_number = get_tabpage_arg(eap);
  	    if (eap->errmsg == NULL)
  	    {
  		tp = find_tabpage(tab_number);
  		if (tp == NULL)
  		{
  		    beep_flush();
  		    return;
  		}
  		if (tp != curtab)
  		{
  		    tabpage_close_other(tp, eap->forceit);
  		    return;
  		}
  		else if (!text_locked()
  #ifdef FEAT_AUTOCMD
  			&& !curbuf_locked()
  #endif
  		)
  		    tabpage_close(eap->forceit);
  	    }
  	}
  }
  
  /*
   * ":tabonly": close all tab pages except the current one
   */
      static void
  ex_tabonly(exarg_T *eap)
  {
      tabpage_T	*tp;
      int		done;
      int		tab_number;
  
  # ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
  	cmdwin_result = K_IGNORE;
      else
  # endif
  	if (first_tabpage->tp_next == NULL)
  	    MSG(_("Already only one tab page"));
  	else
  	{
  	    tab_number = get_tabpage_arg(eap);
  	    if (eap->errmsg == NULL)
  	    {
  		goto_tabpage(tab_number);
  		/* Repeat this up to a 1000 times, because autocommands may
  		 * mess up the lists. */
  		for (done = 0; done < 1000; ++done)
  		{
  		    FOR_ALL_TABPAGES(tp)
  			if (tp->tp_topframe != topframe)
  			{
  			    tabpage_close_other(tp, eap->forceit);
  			    /* if we failed to close it quit */
  			    if (valid_tabpage(tp))
  				done = 1000;
  			    /* start over, "tp" is now invalid */
  			    break;
  			}
  		    if (first_tabpage->tp_next == NULL)
  			break;
  		}
  	    }
  	}
  }
  
  /*
   * Close the current tab page.
   */
      void
  tabpage_close(int forceit)
  {
      /* First close all the windows but the current one.  If that worked then
       * close the last window in this tab, that will close it. */
      if (!ONE_WINDOW)
  	close_others(TRUE, forceit);
      if (ONE_WINDOW)
  	ex_win_close(forceit, curwin, NULL);
  # ifdef FEAT_GUI
      need_mouse_correct = TRUE;
  # endif
  }
  
  /*
   * Close tab page "tp", which is not the current tab page.
   * Note that autocommands may make "tp" invalid.
   * Also takes care of the tab pages line disappearing when closing the
   * last-but-one tab page.
   */
      void
  tabpage_close_other(tabpage_T *tp, int forceit)
  {
      int		done = 0;
      win_T	*wp;
      int		h = tabline_height();
  
      /* Limit to 1000 windows, autocommands may add a window while we close
       * one.  OK, so I'm paranoid... */
      while (++done < 1000)
      {
  	wp = tp->tp_firstwin;
  	ex_win_close(forceit, wp, tp);
  
  	/* Autocommands may delete the tab page under our fingers and we may
  	 * fail to close a window with a modified buffer. */
  	if (!valid_tabpage(tp) || tp->tp_firstwin == wp)
  	    break;
      }
  
  #ifdef FEAT_AUTOCMD
      apply_autocmds(EVENT_TABCLOSED, NULL, NULL, FALSE, curbuf);
  #endif
  
      redraw_tabline = TRUE;
      if (h != tabline_height())
  	shell_new_rows();
  }
  
  /*
   * ":only".
   */
      static void
  ex_only(exarg_T *eap)
  {
      win_T   *wp;
      int	    wnr;
  # ifdef FEAT_GUI
      need_mouse_correct = TRUE;
  # endif
      if (eap->addr_count > 0)
      {
  	wnr = eap->line2;
  	for (wp = firstwin; --wnr > 0; )
  	{
  	    if (wp->w_next == NULL)
  		break;
  	    else
  		wp = wp->w_next;
  	}
  	win_goto(wp);
      }
      close_others(TRUE, eap->forceit);
  }
  
  /*
   * ":all" and ":sall".
   * Also used for ":tab drop file ..." after setting the argument list.
   */
      void
  ex_all(exarg_T *eap)
  {
      if (eap->addr_count == 0)
  	eap->line2 = 9999;
      do_arg_all((int)eap->line2, eap->forceit, eap->cmdidx == CMD_drop);
  }
  
      static void
  ex_hide(exarg_T *eap UNUSED)
  {
      /* ":hide" or ":hide | cmd": hide current window */
      if (!eap->skip)
      {
  #ifdef FEAT_GUI
  	need_mouse_correct = TRUE;
  #endif
  	if (eap->addr_count == 0)
  	    win_close(curwin, FALSE);	/* don't free buffer */
  	else
  	{
  	    int	winnr = 0;
  	    win_T	*win;
  
  	    FOR_ALL_WINDOWS(win)
  	    {
  		winnr++;
  		if (winnr == eap->line2)
  		    break;
  	    }
  	    if (win == NULL)
  		win = lastwin;
  	    win_close(win, FALSE);
  	}
      }
  }
  
  /*
   * ":stop" and ":suspend": Suspend Vim.
   */
      static void
  ex_stop(exarg_T *eap)
  {
      /*
       * Disallow suspending for "rvim".
       */
      if (!check_restricted())
      {
  	if (!eap->forceit)
  	    autowrite_all();
  	windgoto((int)Rows - 1, 0);
  	out_char('\n');
  	out_flush();
  	stoptermcap();
  	out_flush();		/* needed for SUN to restore xterm buffer */
  #ifdef FEAT_TITLE
  	mch_restore_title(3);	/* restore window titles */
  #endif
  	ui_suspend();		/* call machine specific function */
  #ifdef FEAT_TITLE
  	maketitle();
  	resettitle();		/* force updating the title */
  #endif
  	starttermcap();
  	scroll_start();		/* scroll screen before redrawing */
  	redraw_later_clear();
  	shell_resized();	/* may have resized window */
      }
  }
  
  /*
   * ":exit", ":xit" and ":wq": Write file and exit Vim.
   */
      static void
  ex_exit(exarg_T *eap)
  {
  #ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
      {
  	cmdwin_result = Ctrl_C;
  	return;
      }
  #endif
      /* Don't quit while editing the command line. */
      if (text_locked())
      {
  	text_locked_msg();
  	return;
      }
  #ifdef FEAT_AUTOCMD
      apply_autocmds(EVENT_QUITPRE, NULL, NULL, FALSE, curbuf);
      /* Refuse to quit when locked or when the buffer in the last window is
       * being closed (can only happen in autocommands). */
      if (curbuf_locked() || (curbuf->b_nwindows == 1 && curbuf->b_locked > 0))
  	return;
  #endif
  
      /*
       * if more files or windows we won't exit
       */
      if (check_more(FALSE, eap->forceit) == OK && only_one_window())
  	exiting = TRUE;
      if (       ((eap->cmdidx == CMD_wq
  		    || curbufIsChanged())
  		&& do_write(eap) == FAIL)
  	    || check_more(TRUE, eap->forceit) == FAIL
  	    || (only_one_window() && check_changed_any(eap->forceit, FALSE)))
      {
  	not_exiting();
      }
      else
      {
  	if (only_one_window())	    /* quit last window, exit Vim */
  	    getout(0);
  	not_exiting();
  # ifdef FEAT_GUI
  	need_mouse_correct = TRUE;
  # endif
  	/* Quit current window, may free the buffer. */
  	win_close(curwin, !buf_hide(curwin->w_buffer));
      }
  }
  
  /*
   * ":print", ":list", ":number".
   */
      static void
  ex_print(exarg_T *eap)
  {
      if (curbuf->b_ml.ml_flags & ML_EMPTY)
  	EMSG(_(e_emptybuf));
      else
      {
  	for ( ;!got_int; ui_breakcheck())
  	{
  	    print_line(eap->line1,
  		    (eap->cmdidx == CMD_number || eap->cmdidx == CMD_pound
  						 || (eap->flags & EXFLAG_NR)),
  		    eap->cmdidx == CMD_list || (eap->flags & EXFLAG_LIST));
  	    if (++eap->line1 > eap->line2)
  		break;
  	    out_flush();	    /* show one line at a time */
  	}
  	setpcmark();
  	/* put cursor at last line */
  	curwin->w_cursor.lnum = eap->line2;
  	beginline(BL_SOL | BL_FIX);
      }
  
      ex_no_reprint = TRUE;
  }
  
  #ifdef FEAT_BYTEOFF
      static void
  ex_goto(exarg_T *eap)
  {
      goto_byte(eap->line2);
  }
  #endif
  
  /*
   * ":shell".
   */
      static void
  ex_shell(exarg_T *eap UNUSED)
  {
      do_shell(NULL, 0);
  }
  
  #if defined(HAVE_DROP_FILE) \
  	|| (defined(FEAT_GUI_GTK) && defined(FEAT_DND)) \
  	|| defined(FEAT_GUI_MSWIN) \
  	|| defined(FEAT_GUI_MAC) \
  	|| defined(PROTO)
  
  /*
   * Handle a file drop. The code is here because a drop is *nearly* like an
   * :args command, but not quite (we have a list of exact filenames, so we
   * don't want to (a) parse a command line, or (b) expand wildcards. So the
   * code is very similar to :args and hence needs access to a lot of the static
   * functions in this file.
   *
   * The list should be allocated using alloc(), as should each item in the
   * list. This function takes over responsibility for freeing the list.
   *
   * XXX The list is made into the argument list. This is freed using
   * FreeWild(), which does a series of vim_free() calls.
   */
      void
  handle_drop(
      int		filec,		/* the number of files dropped */
      char_u	**filev,	/* the list of files dropped */
      int		split)		/* force splitting the window */
  {
      exarg_T	ea;
      int		save_msg_scroll = msg_scroll;
  
      /* Postpone this while editing the command line. */
      if (text_locked())
  	return;
  #ifdef FEAT_AUTOCMD
      if (curbuf_locked())
  	return;
  #endif
      /* When the screen is being updated we should not change buffers and
       * windows structures, it may cause freed memory to be used. */
      if (updating_screen)
  	return;
  
      /* Check whether the current buffer is changed. If so, we will need
       * to split the current window or data could be lost.
       * We don't need to check if the 'hidden' option is set, as in this
       * case the buffer won't be lost.
       */
      if (!buf_hide(curbuf) && !split)
      {
  	++emsg_off;
  	split = check_changed(curbuf, CCGD_AW);
  	--emsg_off;
      }
      if (split)
      {
  	if (win_split(0, 0) == FAIL)
  	    return;
  	RESET_BINDING(curwin);
  
  	/* When splitting the window, create a new alist.  Otherwise the
  	 * existing one is overwritten. */
  	alist_unlink(curwin->w_alist);
  	alist_new();
      }
  
      /*
       * Set up the new argument list.
       */
      alist_set(ALIST(curwin), filec, filev, FALSE, NULL, 0);
  
      /*
       * Move to the first file.
       */
      /* Fake up a minimal "next" command for do_argfile() */
      vim_memset(&ea, 0, sizeof(ea));
      ea.cmd = (char_u *)"next";
      do_argfile(&ea, 0);
  
      /* do_ecmd() may set need_start_insertmode, but since we never left Insert
       * mode that is not needed here. */
      need_start_insertmode = FALSE;
  
      /* Restore msg_scroll, otherwise a following command may cause scrolling
       * unexpectedly.  The screen will be redrawn by the caller, thus
       * msg_scroll being set by displaying a message is irrelevant. */
      msg_scroll = save_msg_scroll;
  }
  #endif
  
  /*
   * Clear an argument list: free all file names and reset it to zero entries.
   */
      void
  alist_clear(alist_T *al)
  {
      while (--al->al_ga.ga_len >= 0)
  	vim_free(AARGLIST(al)[al->al_ga.ga_len].ae_fname);
      ga_clear(&al->al_ga);
  }
  
  /*
   * Init an argument list.
   */
      void
  alist_init(alist_T *al)
  {
      ga_init2(&al->al_ga, (int)sizeof(aentry_T), 5);
  }
  
  /*
   * Remove a reference from an argument list.
   * Ignored when the argument list is the global one.
   * If the argument list is no longer used by any window, free it.
   */
      void
  alist_unlink(alist_T *al)
  {
      if (al != &global_alist && --al->al_refcount <= 0)
      {
  	alist_clear(al);
  	vim_free(al);
      }
  }
  
  #if defined(FEAT_LISTCMDS) || defined(HAVE_DROP_FILE) || defined(PROTO)
  /*
   * Create a new argument list and use it for the current window.
   */
      void
  alist_new(void)
  {
      curwin->w_alist = (alist_T *)alloc((unsigned)sizeof(alist_T));
      if (curwin->w_alist == NULL)
      {
  	curwin->w_alist = &global_alist;
  	++global_alist.al_refcount;
      }
      else
      {
  	curwin->w_alist->al_refcount = 1;
  	curwin->w_alist->id = ++max_alist_id;
  	alist_init(curwin->w_alist);
      }
  }
  #endif
  
  #if !defined(UNIX) || defined(PROTO)
  /*
   * Expand the file names in the global argument list.
   * If "fnum_list" is not NULL, use "fnum_list[fnum_len]" as a list of buffer
   * numbers to be re-used.
   */
      void
  alist_expand(int *fnum_list, int fnum_len)
  {
      char_u	**old_arg_files;
      int		old_arg_count;
      char_u	**new_arg_files;
      int		new_arg_file_count;
      char_u	*save_p_su = p_su;
      int		i;
  
      /* Don't use 'suffixes' here.  This should work like the shell did the
       * expansion.  Also, the vimrc file isn't read yet, thus the user
       * can't set the options. */
      p_su = empty_option;
      old_arg_files = (char_u **)alloc((unsigned)(sizeof(char_u *) * GARGCOUNT));
      if (old_arg_files != NULL)
      {
  	for (i = 0; i < GARGCOUNT; ++i)
  	    old_arg_files[i] = vim_strsave(GARGLIST[i].ae_fname);
  	old_arg_count = GARGCOUNT;
  	if (expand_wildcards(old_arg_count, old_arg_files,
  		    &new_arg_file_count, &new_arg_files,
  		    EW_FILE|EW_NOTFOUND|EW_ADDSLASH|EW_NOERROR) == OK
  		&& new_arg_file_count > 0)
  	{
  	    alist_set(&global_alist, new_arg_file_count, new_arg_files,
  						   TRUE, fnum_list, fnum_len);
  	    FreeWild(old_arg_count, old_arg_files);
  	}
      }
      p_su = save_p_su;
  }
  #endif
  
  /*
   * Set the argument list for the current window.
   * Takes over the allocated files[] and the allocated fnames in it.
   */
      void
  alist_set(
      alist_T	*al,
      int		count,
      char_u	**files,
      int		use_curbuf,
      int		*fnum_list,
      int		fnum_len)
  {
      int		i;
  
      alist_clear(al);
      if (ga_grow(&al->al_ga, count) == OK)
      {
  	for (i = 0; i < count; ++i)
  	{
  	    if (got_int)
  	    {
  		/* When adding many buffers this can take a long time.  Allow
  		 * interrupting here. */
  		while (i < count)
  		    vim_free(files[i++]);
  		break;
  	    }
  
  	    /* May set buffer name of a buffer previously used for the
  	     * argument list, so that it's re-used by alist_add. */
  	    if (fnum_list != NULL && i < fnum_len)
  		buf_set_name(fnum_list[i], files[i]);
  
  	    alist_add(al, files[i], use_curbuf ? 2 : 1);
  	    ui_breakcheck();
  	}
  	vim_free(files);
      }
      else
  	FreeWild(count, files);
      if (al == &global_alist)
  	arg_had_last = FALSE;
  }
  
  /*
   * Add file "fname" to argument list "al".
   * "fname" must have been allocated and "al" must have been checked for room.
   */
      void
  alist_add(
      alist_T	*al,
      char_u	*fname,
      int		set_fnum)	/* 1: set buffer number; 2: re-use curbuf */
  {
      if (fname == NULL)		/* don't add NULL file names */
  	return;
  #ifdef BACKSLASH_IN_FILENAME
      slash_adjust(fname);
  #endif
      AARGLIST(al)[al->al_ga.ga_len].ae_fname = fname;
      if (set_fnum > 0)
  	AARGLIST(al)[al->al_ga.ga_len].ae_fnum =
  	    buflist_add(fname, BLN_LISTED | (set_fnum == 2 ? BLN_CURBUF : 0));
      ++al->al_ga.ga_len;
  }
  
  #if defined(BACKSLASH_IN_FILENAME) || defined(PROTO)
  /*
   * Adjust slashes in file names.  Called after 'shellslash' was set.
   */
      void
  alist_slash_adjust(void)
  {
      int		i;
      win_T	*wp;
      tabpage_T	*tp;
  
      for (i = 0; i < GARGCOUNT; ++i)
  	if (GARGLIST[i].ae_fname != NULL)
  	    slash_adjust(GARGLIST[i].ae_fname);
      FOR_ALL_TAB_WINDOWS(tp, wp)
  	if (wp->w_alist != &global_alist)
  	    for (i = 0; i < WARGCOUNT(wp); ++i)
  		if (WARGLIST(wp)[i].ae_fname != NULL)
  		    slash_adjust(WARGLIST(wp)[i].ae_fname);
  }
  #endif
  
  /*
   * ":preserve".
   */
      static void
  ex_preserve(exarg_T *eap UNUSED)
  {
      curbuf->b_flags |= BF_PRESERVED;
      ml_preserve(curbuf, TRUE);
  }
  
  /*
   * ":recover".
   */
      static void
  ex_recover(exarg_T *eap)
  {
      /* Set recoverymode right away to avoid the ATTENTION prompt. */
      recoverymode = TRUE;
      if (!check_changed(curbuf, (p_awa ? CCGD_AW : 0)
  			     | CCGD_MULTWIN
  			     | (eap->forceit ? CCGD_FORCEIT : 0)
  			     | CCGD_EXCMD)
  
  	    && (*eap->arg == NUL
  			     || setfname(curbuf, eap->arg, NULL, TRUE) == OK))
  	ml_recover();
      recoverymode = FALSE;
  }
  
  /*
   * Command modifier used in a wrong way.
   */
      static void
  ex_wrongmodifier(exarg_T *eap)
  {
      eap->errmsg = e_invcmd;
  }
  
  /*
   * :sview [+command] file	split window with new file, read-only
   * :split [[+command] file]	split window with current or new file
   * :vsplit [[+command] file]	split window vertically with current or new file
   * :new [[+command] file]	split window with no or new file
   * :vnew [[+command] file]	split vertically window with no or new file
   * :sfind [+command] file	split window with file in 'path'
   *
   * :tabedit			open new Tab page with empty window
   * :tabedit [+command] file	open new Tab page and edit "file"
   * :tabnew [[+command] file]	just like :tabedit
   * :tabfind [+command] file	open new Tab page and find "file"
   */
      void
  ex_splitview(exarg_T *eap)
  {
      win_T	*old_curwin = curwin;
  #if defined(FEAT_SEARCHPATH) || defined(FEAT_BROWSE)
      char_u	*fname = NULL;
  #endif
  #ifdef FEAT_BROWSE
      int		browse_flag = cmdmod.browse;
  #endif
  
  #ifdef FEAT_GUI
      need_mouse_correct = TRUE;
  #endif
  
  #ifdef FEAT_QUICKFIX
      /* A ":split" in the quickfix window works like ":new".  Don't want two
       * quickfix windows.  But it's OK when doing ":tab split". */
      if (bt_quickfix(curbuf) && cmdmod.tab == 0)
      {
  	if (eap->cmdidx == CMD_split)
  	    eap->cmdidx = CMD_new;
  	if (eap->cmdidx == CMD_vsplit)
  	    eap->cmdidx = CMD_vnew;
      }
  #endif
  
  #ifdef FEAT_SEARCHPATH
      if (eap->cmdidx == CMD_sfind || eap->cmdidx == CMD_tabfind)
      {
  	fname = find_file_in_path(eap->arg, (int)STRLEN(eap->arg),
  					  FNAME_MESS, TRUE, curbuf->b_ffname);
  	if (fname == NULL)
  	    goto theend;
  	eap->arg = fname;
      }
  # ifdef FEAT_BROWSE
      else
  # endif
  #endif
  #ifdef FEAT_BROWSE
      if (cmdmod.browse
  	    && eap->cmdidx != CMD_vnew
  	    && eap->cmdidx != CMD_new)
      {
  # ifdef FEAT_AUTOCMD
  	if (
  #  ifdef FEAT_GUI
  	    !gui.in_use &&
  #  endif
  		au_has_group((char_u *)"FileExplorer"))
  	{
  	    /* No browsing supported but we do have the file explorer:
  	     * Edit the directory. */
  	    if (*eap->arg == NUL || !mch_isdir(eap->arg))
  		eap->arg = (char_u *)".";
  	}
  	else
  # endif
  	{
  	    fname = do_browse(0, (char_u *)_("Edit File in new window"),
  					  eap->arg, NULL, NULL, NULL, curbuf);
  	    if (fname == NULL)
  		goto theend;
  	    eap->arg = fname;
  	}
      }
      cmdmod.browse = FALSE;	/* Don't browse again in do_ecmd(). */
  #endif
  
      /*
       * Either open new tab page or split the window.
       */
      if (eap->cmdidx == CMD_tabedit
  	    || eap->cmdidx == CMD_tabfind
  	    || eap->cmdidx == CMD_tabnew)
      {
  	if (win_new_tabpage(cmdmod.tab != 0 ? cmdmod.tab
  			 : eap->addr_count == 0 ? 0
  					       : (int)eap->line2 + 1) != FAIL)
  	{
  	    do_exedit(eap, old_curwin);
  
  	    /* set the alternate buffer for the window we came from */
  	    if (curwin != old_curwin
  		    && win_valid(old_curwin)
  		    && old_curwin->w_buffer != curbuf
  		    && !cmdmod.keepalt)
  		old_curwin->w_alt_fnum = curbuf->b_fnum;
  	}
      }
      else if (win_split(eap->addr_count > 0 ? (int)eap->line2 : 0,
  				     *eap->cmd == 'v' ? WSP_VERT : 0) != FAIL)
      {
  # ifdef FEAT_SCROLLBIND
  	/* Reset 'scrollbind' when editing another file, but keep it when
  	 * doing ":split" without arguments. */
  	if (*eap->arg != NUL
  #  ifdef FEAT_BROWSE
  		|| cmdmod.browse
  #  endif
  	   )
  	{
  	    RESET_BINDING(curwin);
  	}
  	else
  	    do_check_scrollbind(FALSE);
  # endif
  	do_exedit(eap, old_curwin);
      }
  
  # ifdef FEAT_BROWSE
      cmdmod.browse = browse_flag;
  # endif
  
  # if defined(FEAT_SEARCHPATH) || defined(FEAT_BROWSE)
  theend:
      vim_free(fname);
  # endif
  }
  
  /*
   * Open a new tab page.
   */
      void
  tabpage_new(void)
  {
      exarg_T	ea;
  
      vim_memset(&ea, 0, sizeof(ea));
      ea.cmdidx = CMD_tabnew;
      ea.cmd = (char_u *)"tabn";
      ea.arg = (char_u *)"";
      ex_splitview(&ea);
  }
  
  /*
   * :tabnext command
   */
      static void
  ex_tabnext(exarg_T *eap)
  {
      int tab_number;
  
      switch (eap->cmdidx)
      {
  	case CMD_tabfirst:
  	case CMD_tabrewind:
  	    goto_tabpage(1);
  	    break;
  	case CMD_tablast:
  	    goto_tabpage(9999);
  	    break;
  	case CMD_tabprevious:
  	case CMD_tabNext:
  	    if (eap->arg && *eap->arg != NUL)
  	    {
  		char_u *p = eap->arg;
  		char_u *p_save = p;
  
  		tab_number = getdigits(&p);
  		if (p == p_save || *p_save == '-' || *p != NUL
  			    || tab_number == 0)
  		{
  		    /* No numbers as argument. */
  		    eap->errmsg = e_invarg;
  		    return;
  		}
  	    }
  	    else
  	    {
  		if (eap->addr_count == 0)
  		    tab_number = 1;
  		else
  		{
  		    tab_number = eap->line2;
  		    if (tab_number < 1)
  		    {
  			eap->errmsg = e_invrange;
  			return;
  		    }
  		}
  	    }
  	    goto_tabpage(-tab_number);
  	    break;
  	default: /* CMD_tabnext */
  	    tab_number = get_tabpage_arg(eap);
  	    if (eap->errmsg == NULL)
  		goto_tabpage(tab_number);
  	    break;
      }
  }
  
  /*
   * :tabmove command
   */
      static void
  ex_tabmove(exarg_T *eap)
  {
      int tab_number;
  
      tab_number = get_tabpage_arg(eap);
      if (eap->errmsg == NULL)
  	tabpage_move(tab_number);
  }
  
  /*
   * :tabs command: List tabs and their contents.
   */
      static void
  ex_tabs(exarg_T *eap UNUSED)
  {
      tabpage_T	*tp;
      win_T	*wp;
      int		tabcount = 1;
  
      msg_start();
      msg_scroll = TRUE;
      for (tp = first_tabpage; tp != NULL && !got_int; tp = tp->tp_next)
      {
  	msg_putchar('\n');
  	vim_snprintf((char *)IObuff, IOSIZE, _("Tab page %d"), tabcount++);
  	msg_outtrans_attr(IObuff, HL_ATTR(HLF_T));
  	out_flush();	    /* output one line at a time */
  	ui_breakcheck();
  
  	if (tp  == curtab)
  	    wp = firstwin;
  	else
  	    wp = tp->tp_firstwin;
  	for ( ; wp != NULL && !got_int; wp = wp->w_next)
  	{
  	    msg_putchar('\n');
  	    msg_putchar(wp == curwin ? '>' : ' ');
  	    msg_putchar(' ');
  	    msg_putchar(bufIsChanged(wp->w_buffer) ? '+' : ' ');
  	    msg_putchar(' ');
  	    if (buf_spname(wp->w_buffer) != NULL)
  		vim_strncpy(IObuff, buf_spname(wp->w_buffer), IOSIZE - 1);
  	    else
  		home_replace(wp->w_buffer, wp->w_buffer->b_fname,
  							IObuff, IOSIZE, TRUE);
  	    msg_outtrans(IObuff);
  	    out_flush();	    /* output one line at a time */
  	    ui_breakcheck();
  	}
      }
  }
  
  /*
   * ":mode": Set screen mode.
   * If no argument given, just get the screen size and redraw.
   */
      static void
  ex_mode(exarg_T *eap)
  {
      if (*eap->arg == NUL)
  	shell_resized();
      else
  	mch_screenmode(eap->arg);
  }
  
  /*
   * ":resize".
   * set, increment or decrement current window height
   */
      static void
  ex_resize(exarg_T *eap)
  {
      int		n;
      win_T	*wp = curwin;
  
      if (eap->addr_count > 0)
      {
  	n = eap->line2;
  	for (wp = firstwin; wp->w_next != NULL && --n > 0; wp = wp->w_next)
  	    ;
      }
  
  # ifdef FEAT_GUI
      need_mouse_correct = TRUE;
  # endif
      n = atol((char *)eap->arg);
      if (cmdmod.split & WSP_VERT)
      {
  	if (*eap->arg == '-' || *eap->arg == '+')
  	    n += curwin->w_width;
  	else if (n == 0 && eap->arg[0] == NUL)	/* default is very wide */
  	    n = 9999;
  	win_setwidth_win((int)n, wp);
      }
      else
      {
  	if (*eap->arg == '-' || *eap->arg == '+')
  	    n += curwin->w_height;
  	else if (n == 0 && eap->arg[0] == NUL)	/* default is very high */
  	    n = 9999;
  	win_setheight_win((int)n, wp);
      }
  }
  
  /*
   * ":find [+command] <file>" command.
   */
      static void
  ex_find(exarg_T *eap)
  {
  #ifdef FEAT_SEARCHPATH
      char_u	*fname;
      int		count;
  
      fname = find_file_in_path(eap->arg, (int)STRLEN(eap->arg), FNAME_MESS,
  						      TRUE, curbuf->b_ffname);
      if (eap->addr_count > 0)
      {
  	/* Repeat finding the file "count" times.  This matters when it
  	 * appears several times in the path. */
  	count = eap->line2;
  	while (fname != NULL && --count > 0)
  	{
  	    vim_free(fname);
  	    fname = find_file_in_path(NULL, 0, FNAME_MESS,
  						     FALSE, curbuf->b_ffname);
  	}
      }
  
      if (fname != NULL)
      {
  	eap->arg = fname;
  #endif
  	do_exedit(eap, NULL);
  #ifdef FEAT_SEARCHPATH
  	vim_free(fname);
      }
  #endif
  }
  
  /*
   * ":open" simulation: for now just work like ":visual".
   */
      static void
  ex_open(exarg_T *eap)
  {
      regmatch_T	regmatch;
      char_u	*p;
  
      curwin->w_cursor.lnum = eap->line2;
      beginline(BL_SOL | BL_FIX);
      if (*eap->arg == '/')
      {
  	/* ":open /pattern/": put cursor in column found with pattern */
  	++eap->arg;
  	p = skip_regexp(eap->arg, '/', p_magic, NULL);
  	*p = NUL;
  	regmatch.regprog = vim_regcomp(eap->arg, p_magic ? RE_MAGIC : 0);
  	if (regmatch.regprog != NULL)
  	{
  	    regmatch.rm_ic = p_ic;
  	    p = ml_get_curline();
  	    if (vim_regexec(&regmatch, p, (colnr_T)0))
  		curwin->w_cursor.col = (colnr_T)(regmatch.startp[0] - p);
  	    else
  		EMSG(_(e_nomatch));
  	    vim_regfree(regmatch.regprog);
  	}
  	/* Move to the NUL, ignore any other arguments. */
  	eap->arg += STRLEN(eap->arg);
      }
      check_cursor();
  
      eap->cmdidx = CMD_visual;
      do_exedit(eap, NULL);
  }
  
  /*
   * ":edit", ":badd", ":visual".
   */
      static void
  ex_edit(exarg_T *eap)
  {
      do_exedit(eap, NULL);
  }
  
  /*
   * ":edit <file>" command and alikes.
   */
      void
  do_exedit(
      exarg_T	*eap,
      win_T	*old_curwin)	    /* curwin before doing a split or NULL */
  {
      int		n;
      int		need_hide;
      int		exmode_was = exmode_active;
  
      /*
       * ":vi" command ends Ex mode.
       */
      if (exmode_active && (eap->cmdidx == CMD_visual
  						|| eap->cmdidx == CMD_view))
      {
  	exmode_active = FALSE;
  	if (*eap->arg == NUL)
  	{
  	    /* Special case:  ":global/pat/visual\NLvi-commands" */
  	    if (global_busy)
  	    {
  		int	rd = RedrawingDisabled;
  		int	nwr = no_wait_return;
  		int	ms = msg_scroll;
  #ifdef FEAT_GUI
  		int	he = hold_gui_events;
  #endif
  
  		if (eap->nextcmd != NULL)
  		{
  		    stuffReadbuff(eap->nextcmd);
  		    eap->nextcmd = NULL;
  		}
  
  		if (exmode_was != EXMODE_VIM)
  		    settmode(TMODE_RAW);
  		RedrawingDisabled = 0;
  		no_wait_return = 0;
  		need_wait_return = FALSE;
  		msg_scroll = 0;
  #ifdef FEAT_GUI
  		hold_gui_events = 0;
  #endif
  		must_redraw = CLEAR;
  
  		main_loop(FALSE, TRUE);
  
  		RedrawingDisabled = rd;
  		no_wait_return = nwr;
  		msg_scroll = ms;
  #ifdef FEAT_GUI
  		hold_gui_events = he;
  #endif
  	    }
  	    return;
  	}
      }
  
      if ((eap->cmdidx == CMD_new
  		|| eap->cmdidx == CMD_tabnew
  		|| eap->cmdidx == CMD_tabedit
  		|| eap->cmdidx == CMD_vnew) && *eap->arg == NUL)
      {
  	/* ":new" or ":tabnew" without argument: edit an new empty buffer */
  	setpcmark();
  	(void)do_ecmd(0, NULL, NULL, eap, ECMD_ONE,
  		      ECMD_HIDE + (eap->forceit ? ECMD_FORCEIT : 0),
  		      old_curwin == NULL ? curwin : NULL);
      }
      else if ((eap->cmdidx != CMD_split && eap->cmdidx != CMD_vsplit)
  	    || *eap->arg != NUL
  #ifdef FEAT_BROWSE
  	    || cmdmod.browse
  #endif
  	    )
      {
  #ifdef FEAT_AUTOCMD
  	/* Can't edit another file when "curbuf_lock" is set.  Only ":edit"
  	 * can bring us here, others are stopped earlier. */
  	if (*eap->arg != NUL && curbuf_locked())
  	    return;
  #endif
  	n = readonlymode;
  	if (eap->cmdidx == CMD_view || eap->cmdidx == CMD_sview)
  	    readonlymode = TRUE;
  	else if (eap->cmdidx == CMD_enew)
  	    readonlymode = FALSE;   /* 'readonly' doesn't make sense in an
  				       empty buffer */
  	setpcmark();
  	if (do_ecmd(0, (eap->cmdidx == CMD_enew ? NULL : eap->arg),
  		    NULL, eap,
  		    /* ":edit" goes to first line if Vi compatible */
  		    (*eap->arg == NUL && eap->do_ecmd_lnum == 0
  				      && vim_strchr(p_cpo, CPO_GOTO1) != NULL)
  					       ? ECMD_ONE : eap->do_ecmd_lnum,
  		    (buf_hide(curbuf) ? ECMD_HIDE : 0)
  		    + (eap->forceit ? ECMD_FORCEIT : 0)
  		      /* after a split we can use an existing buffer */
  		    + (old_curwin != NULL ? ECMD_OLDBUF : 0)
  #ifdef FEAT_LISTCMDS
  		    + (eap->cmdidx == CMD_badd ? ECMD_ADDBUF : 0 )
  #endif
  		    , old_curwin == NULL ? curwin : NULL) == FAIL)
  	{
  	    /* Editing the file failed.  If the window was split, close it. */
  	    if (old_curwin != NULL)
  	    {
  		need_hide = (curbufIsChanged() && curbuf->b_nwindows <= 1);
  		if (!need_hide || buf_hide(curbuf))
  		{
  #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
  		    cleanup_T   cs;
  
  		    /* Reset the error/interrupt/exception state here so that
  		     * aborting() returns FALSE when closing a window. */
  		    enter_cleanup(&cs);
  #endif
  #ifdef FEAT_GUI
  		    need_mouse_correct = TRUE;
  #endif
  		    win_close(curwin, !need_hide && !buf_hide(curbuf));
  
  #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
  		    /* Restore the error/interrupt/exception state if not
  		     * discarded by a new aborting error, interrupt, or
  		     * uncaught exception. */
  		    leave_cleanup(&cs);
  #endif
  		}
  	    }
  	}
  	else if (readonlymode && curbuf->b_nwindows == 1)
  	{
  	    /* When editing an already visited buffer, 'readonly' won't be set
  	     * but the previous value is kept.  With ":view" and ":sview" we
  	     * want the  file to be readonly, except when another window is
  	     * editing the same buffer. */
  	    curbuf->b_p_ro = TRUE;
  	}
  	readonlymode = n;
      }
      else
      {
  	if (eap->do_ecmd_cmd != NULL)
  	    do_cmdline_cmd(eap->do_ecmd_cmd);
  #ifdef FEAT_TITLE
  	n = curwin->w_arg_idx_invalid;
  #endif
  	check_arg_idx(curwin);
  #ifdef FEAT_TITLE
  	if (n != curwin->w_arg_idx_invalid)
  	    maketitle();
  #endif
      }
  
      /*
       * if ":split file" worked, set alternate file name in old window to new
       * file
       */
      if (old_curwin != NULL
  	    && *eap->arg != NUL
  	    && curwin != old_curwin
  	    && win_valid(old_curwin)
  	    && old_curwin->w_buffer != curbuf
  	    && !cmdmod.keepalt)
  	old_curwin->w_alt_fnum = curbuf->b_fnum;
  
      ex_no_reprint = TRUE;
  }
  
  #ifndef FEAT_GUI
  /*
   * ":gui" and ":gvim" when there is no GUI.
   */
      static void
  ex_nogui(exarg_T *eap)
  {
      eap->errmsg = e_nogvim;
  }
  #endif
  
  #if defined(FEAT_GUI_W32) && defined(FEAT_MENU) && defined(FEAT_TEAROFF)
      static void
  ex_tearoff(exarg_T *eap)
  {
      gui_make_tearoff(eap->arg);
  }
  #endif
  
  #if (defined(FEAT_GUI_MSWIN) || defined(FEAT_GUI_GTK)) && defined(FEAT_MENU)
      static void
  ex_popup(exarg_T *eap)
  {
      gui_make_popup(eap->arg, eap->forceit);
  }
  #endif
  
      static void
  ex_swapname(exarg_T *eap UNUSED)
  {
      if (curbuf->b_ml.ml_mfp == NULL || curbuf->b_ml.ml_mfp->mf_fname == NULL)
  	MSG(_("No swap file"));
      else
  	msg(curbuf->b_ml.ml_mfp->mf_fname);
  }
  
  /*
   * ":syncbind" forces all 'scrollbind' windows to have the same relative
   * offset.
   * (1998-11-02 16:21:01  R. Edward Ralston <eralston@computer.org>)
   */
      static void
  ex_syncbind(exarg_T *eap UNUSED)
  {
  #ifdef FEAT_SCROLLBIND
      win_T	*wp;
      win_T	*save_curwin = curwin;
      buf_T	*save_curbuf = curbuf;
      long	topline;
      long	y;
      linenr_T	old_linenr = curwin->w_cursor.lnum;
  
      setpcmark();
  
      /*
       * determine max topline
       */
      if (curwin->w_p_scb)
      {
  	topline = curwin->w_topline;
  	FOR_ALL_WINDOWS(wp)
  	{
  	    if (wp->w_p_scb && wp->w_buffer)
  	    {
  		y = wp->w_buffer->b_ml.ml_line_count - p_so;
  		if (topline > y)
  		    topline = y;
  	    }
  	}
  	if (topline < 1)
  	    topline = 1;
      }
      else
      {
  	topline = 1;
      }
  
  
      /*
       * Set all scrollbind windows to the same topline.
       */
      FOR_ALL_WINDOWS(curwin)
      {
  	if (curwin->w_p_scb)
  	{
  	    curbuf = curwin->w_buffer;
  	    y = topline - curwin->w_topline;
  	    if (y > 0)
  		scrollup(y, TRUE);
  	    else
  		scrolldown(-y, TRUE);
  	    curwin->w_scbind_pos = topline;
  	    redraw_later(VALID);
  	    cursor_correct();
  	    curwin->w_redr_status = TRUE;
  	}
      }
      curwin = save_curwin;
      curbuf = save_curbuf;
      if (curwin->w_p_scb)
      {
  	did_syncbind = TRUE;
  	checkpcmark();
  	if (old_linenr != curwin->w_cursor.lnum)
  	{
  	    char_u ctrl_o[2];
  
  	    ctrl_o[0] = Ctrl_O;
  	    ctrl_o[1] = 0;
  	    ins_typebuf(ctrl_o, REMAP_NONE, 0, TRUE, FALSE);
  	}
      }
  #endif
  }
  
  
      static void
  ex_read(exarg_T *eap)
  {
      int		i;
      int		empty = (curbuf->b_ml.ml_flags & ML_EMPTY);
      linenr_T	lnum;
  
      if (eap->usefilter)			/* :r!cmd */
  	do_bang(1, eap, FALSE, FALSE, TRUE);
      else
      {
  	if (u_save(eap->line2, (linenr_T)(eap->line2 + 1)) == FAIL)
  	    return;
  
  #ifdef FEAT_BROWSE
  	if (cmdmod.browse)
  	{
  	    char_u *browseFile;
  
  	    browseFile = do_browse(0, (char_u *)_("Append File"), eap->arg,
  						    NULL, NULL, NULL, curbuf);
  	    if (browseFile != NULL)
  	    {
  		i = readfile(browseFile, NULL,
  			  eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
  		vim_free(browseFile);
  	    }
  	    else
  		i = OK;
  	}
  	else
  #endif
  	     if (*eap->arg == NUL)
  	{
  	    if (check_fname() == FAIL)	/* check for no file name */
  		return;
  	    i = readfile(curbuf->b_ffname, curbuf->b_fname,
  			  eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
  	}
  	else
  	{
  	    if (vim_strchr(p_cpo, CPO_ALTREAD) != NULL)
  		(void)setaltfname(eap->arg, eap->arg, (linenr_T)1);
  	    i = readfile(eap->arg, NULL,
  			  eap->line2, (linenr_T)0, (linenr_T)MAXLNUM, eap, 0);
  
  	}
  	if (i != OK)
  	{
  #if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
  	    if (!aborting())
  #endif
  		EMSG2(_(e_notopen), eap->arg);
  	}
  	else
  	{
  	    if (empty && exmode_active)
  	    {
  		/* Delete the empty line that remains.  Historically ex does
  		 * this but vi doesn't. */
  		if (eap->line2 == 0)
  		    lnum = curbuf->b_ml.ml_line_count;
  		else
  		    lnum = 1;
  		if (*ml_get(lnum) == NUL && u_savedel(lnum, 1L) == OK)
  		{
  		    ml_delete(lnum, FALSE);
  		    if (curwin->w_cursor.lnum > 1
  					     && curwin->w_cursor.lnum >= lnum)
  			--curwin->w_cursor.lnum;
  		    deleted_lines_mark(lnum, 1L);
  		}
  	    }
  	    redraw_curbuf_later(VALID);
  	}
      }
  }
  
  static char_u	*prev_dir = NULL;
  
  #if defined(EXITFREE) || defined(PROTO)
      void
  free_cd_dir(void)
  {
      vim_free(prev_dir);
      prev_dir = NULL;
  
      vim_free(globaldir);
      globaldir = NULL;
  }
  #endif
  
  /*
   * Deal with the side effects of changing the current directory.
   * When "local" is TRUE then this was after an ":lcd" command.
   */
      void
  post_chdir(int local)
  {
      vim_free(curwin->w_localdir);
      curwin->w_localdir = NULL;
      if (local)
      {
  	/* If still in global directory, need to remember current
  	 * directory as global directory. */
  	if (globaldir == NULL && prev_dir != NULL)
  	    globaldir = vim_strsave(prev_dir);
  	/* Remember this local directory for the window. */
  	if (mch_dirname(NameBuff, MAXPATHL) == OK)
  	    curwin->w_localdir = vim_strsave(NameBuff);
      }
      else
      {
  	/* We are now in the global directory, no need to remember its
  	 * name. */
  	vim_free(globaldir);
  	globaldir = NULL;
      }
  
      shorten_fnames(TRUE);
  }
  
  
  /*
   * ":cd", ":lcd", ":chdir" and ":lchdir".
   */
      void
  ex_cd(exarg_T *eap)
  {
      char_u		*new_dir;
      char_u		*tofree;
  
      new_dir = eap->arg;
  #if !defined(UNIX) && !defined(VMS)
      /* for non-UNIX ":cd" means: print current directory */
      if (*new_dir == NUL)
  	ex_pwd(NULL);
      else
  #endif
      {
  #ifdef FEAT_AUTOCMD
  	if (allbuf_locked())
  	    return;
  #endif
  	if (vim_strchr(p_cpo, CPO_CHDIR) != NULL && curbufIsChanged()
  							     && !eap->forceit)
  	{
  	    EMSG(_("E747: Cannot change directory, buffer is modified (add ! to override)"));
  	    return;
  	}
  
  	/* ":cd -": Change to previous directory */
  	if (STRCMP(new_dir, "-") == 0)
  	{
  	    if (prev_dir == NULL)
  	    {
  		EMSG(_("E186: No previous directory"));
  		return;
  	    }
  	    new_dir = prev_dir;
  	}
  
  	/* Save current directory for next ":cd -" */
  	tofree = prev_dir;
  	if (mch_dirname(NameBuff, MAXPATHL) == OK)
  	    prev_dir = vim_strsave(NameBuff);
  	else
  	    prev_dir = NULL;
  
  #if defined(UNIX) || defined(VMS)
  	/* for UNIX ":cd" means: go to home directory */
  	if (*new_dir == NUL)
  	{
  	    /* use NameBuff for home directory name */
  # ifdef VMS
  	    char_u	*p;
  
  	    p = mch_getenv((char_u *)"SYS$LOGIN");
  	    if (p == NULL || *p == NUL)	/* empty is the same as not set */
  		NameBuff[0] = NUL;
  	    else
  		vim_strncpy(NameBuff, p, MAXPATHL - 1);
  # else
  	    expand_env((char_u *)"$HOME", NameBuff, MAXPATHL);
  # endif
  	    new_dir = NameBuff;
  	}
  #endif
  	if (new_dir == NULL || vim_chdir(new_dir))
  	    EMSG(_(e_failed));
  	else
  	{
  	    int is_local_chdir = eap->cmdidx == CMD_lcd
  						  || eap->cmdidx == CMD_lchdir;
  
  	    post_chdir(is_local_chdir);
  
  	    /* Echo the new current directory if the command was typed. */
  	    if (KeyTyped || p_verbose >= 5)
  		ex_pwd(eap);
  #ifdef FEAT_AUTOCMD
  	    apply_autocmds(EVENT_DIRCHANGED,
  		    is_local_chdir ? (char_u *)"window" : (char_u *)"global",
  		    new_dir, FALSE, curbuf);
  #endif
  	}
  	vim_free(tofree);
      }
  }
  
  /*
   * ":pwd".
   */
      static void
  ex_pwd(exarg_T *eap UNUSED)
  {
      if (mch_dirname(NameBuff, MAXPATHL) == OK)
      {
  #ifdef BACKSLASH_IN_FILENAME
  	slash_adjust(NameBuff);
  #endif
  	msg(NameBuff);
      }
      else
  	EMSG(_("E187: Unknown"));
  }
  
  /*
   * ":=".
   */
      static void
  ex_equal(exarg_T *eap)
  {
      smsg((char_u *)"%ld", (long)eap->line2);
      ex_may_print(eap);
  }
  
      static void
  ex_sleep(exarg_T *eap)
  {
      int		n;
      long	len;
  
      if (cursor_valid())
      {
  	n = W_WINROW(curwin) + curwin->w_wrow - msg_scrolled;
  	if (n >= 0)
  	    windgoto((int)n, curwin->w_wincol + curwin->w_wcol);
      }
  
      len = eap->line2;
      switch (*eap->arg)
      {
  	case 'm': break;
  	case NUL: len *= 1000L; break;
  	default: EMSG2(_(e_invarg2), eap->arg); return;
      }
      do_sleep(len);
  }
  
  /*
   * Sleep for "msec" milliseconds, but keep checking for a CTRL-C every second.
   */
      void
  do_sleep(long msec)
  {
      long	done;
      long	wait_now;
  
      cursor_on();
      out_flush();
      for (done = 0; !got_int && done < msec; done += wait_now)
      {
  	wait_now = msec - done > 1000L ? 1000L : msec - done;
  #ifdef FEAT_TIMERS
  	{
  	    long    due_time = check_due_timer();
  
  	    if (due_time > 0 && due_time < wait_now)
  		wait_now = due_time;
  	}
  #endif
  #ifdef FEAT_JOB_CHANNEL
  	if (has_any_channel() && wait_now > 100L)
  	    wait_now = 100L;
  #endif
  	ui_delay(wait_now, TRUE);
  #ifdef FEAT_JOB_CHANNEL
  	if (has_any_channel())
  	    ui_breakcheck_force(TRUE);
  	else
  #endif
  	    ui_breakcheck();
  #ifdef MESSAGE_QUEUE
  	/* Process the netbeans and clientserver messages that may have been
  	 * received in the call to ui_breakcheck() when the GUI is in use. This
  	 * may occur when running a test case. */
  	parse_queued_messages();
  #endif
      }
  }
  
      static void
  do_exmap(exarg_T *eap, int isabbrev)
  {
      int	    mode;
      char_u  *cmdp;
  
      cmdp = eap->cmd;
      mode = get_map_mode(&cmdp, eap->forceit || isabbrev);
  
      switch (do_map((*cmdp == 'n') ? 2 : (*cmdp == 'u'),
  						    eap->arg, mode, isabbrev))
      {
  	case 1: EMSG(_(e_invarg));
  		break;
  	case 2: EMSG(isabbrev ? _(e_noabbr) : _(e_nomap));
  		break;
      }
  }
  
  /*
   * ":winsize" command (obsolete).
   */
      static void
  ex_winsize(exarg_T *eap)
  {
      int		w, h;
      char_u	*arg = eap->arg;
      char_u	*p;
  
      w = getdigits(&arg);
      arg = skipwhite(arg);
      p = arg;
      h = getdigits(&arg);
      if (*p != NUL && *arg == NUL)
  	set_shellsize(w, h, TRUE);
      else
  	EMSG(_("E465: :winsize requires two number arguments"));
  }
  
      static void
  ex_wincmd(exarg_T *eap)
  {
      int		xchar = NUL;
      char_u	*p;
  
      if (*eap->arg == 'g' || *eap->arg == Ctrl_G)
      {
  	/* CTRL-W g and CTRL-W CTRL-G  have an extra command character */
  	if (eap->arg[1] == NUL)
  	{
  	    EMSG(_(e_invarg));
  	    return;
  	}
  	xchar = eap->arg[1];
  	p = eap->arg + 2;
      }
      else
  	p = eap->arg + 1;
  
      eap->nextcmd = check_nextcmd(p);
      p = skipwhite(p);
      if (*p != NUL && *p != '"' && eap->nextcmd == NULL)
  	EMSG(_(e_invarg));
      else if (!eap->skip)
      {
  	/* Pass flags on for ":vertical wincmd ]". */
  	postponed_split_flags = cmdmod.split;
  	postponed_split_tab = cmdmod.tab;
  	do_window(*eap->arg, eap->addr_count > 0 ? eap->line2 : 0L, xchar);
  	postponed_split_flags = 0;
  	postponed_split_tab = 0;
      }
  }
  
  #if defined(FEAT_GUI) || defined(UNIX) || defined(VMS) || defined(MSWIN)
  /*
   * ":winpos".
   */
      static void
  ex_winpos(exarg_T *eap)
  {
      int		x, y;
      char_u	*arg = eap->arg;
      char_u	*p;
  
      if (*arg == NUL)
      {
  # if defined(FEAT_GUI) || defined(MSWIN)
  #  ifdef FEAT_GUI
  	if (gui.in_use && gui_mch_get_winpos(&x, &y) != FAIL)
  #  else
  	if (mch_get_winpos(&x, &y) != FAIL)
  #  endif
  	{
  	    sprintf((char *)IObuff, _("Window position: X %d, Y %d"), x, y);
  	    msg(IObuff);
  	}
  	else
  # endif
  	    EMSG(_("E188: Obtaining window position not implemented for this platform"));
      }
      else
      {
  	x = getdigits(&arg);
  	arg = skipwhite(arg);
  	p = arg;
  	y = getdigits(&arg);
  	if (*p == NUL || *arg != NUL)
  	{
  	    EMSG(_("E466: :winpos requires two number arguments"));
  	    return;
  	}
  # ifdef FEAT_GUI
  	if (gui.in_use)
  	    gui_mch_set_winpos(x, y);
  	else if (gui.starting)
  	{
  	    /* Remember the coordinates for when the window is opened. */
  	    gui_win_x = x;
  	    gui_win_y = y;
  	}
  #  ifdef HAVE_TGETENT
  	else
  #  endif
  # else
  #  ifdef MSWIN
  	    mch_set_winpos(x, y);
  #  endif
  # endif
  # ifdef HAVE_TGETENT
  	if (*T_CWP)
  	    term_set_winpos(x, y);
  # endif
      }
  }
  #endif
  
  /*
   * Handle command that work like operators: ":delete", ":yank", ":>" and ":<".
   */
      static void
  ex_operators(exarg_T *eap)
  {
      oparg_T	oa;
  
      clear_oparg(&oa);
      oa.regname = eap->regname;
      oa.start.lnum = eap->line1;
      oa.end.lnum = eap->line2;
      oa.line_count = eap->line2 - eap->line1 + 1;
      oa.motion_type = MLINE;
  #ifdef FEAT_VIRTUALEDIT
      virtual_op = FALSE;
  #endif
      if (eap->cmdidx != CMD_yank)	/* position cursor for undo */
      {
  	setpcmark();
  	curwin->w_cursor.lnum = eap->line1;
  	beginline(BL_SOL | BL_FIX);
      }
  
      if (VIsual_active)
  	end_visual_mode();
  
      switch (eap->cmdidx)
      {
  	case CMD_delete:
  	    oa.op_type = OP_DELETE;
  	    op_delete(&oa);
  	    break;
  
  	case CMD_yank:
  	    oa.op_type = OP_YANK;
  	    (void)op_yank(&oa, FALSE, TRUE);
  	    break;
  
  	default:    /* CMD_rshift or CMD_lshift */
  	    if (
  #ifdef FEAT_RIGHTLEFT
  		(eap->cmdidx == CMD_rshift) ^ curwin->w_p_rl
  #else
  		eap->cmdidx == CMD_rshift
  #endif
  						)
  		oa.op_type = OP_RSHIFT;
  	    else
  		oa.op_type = OP_LSHIFT;
  	    op_shift(&oa, FALSE, eap->amount);
  	    break;
      }
  #ifdef FEAT_VIRTUALEDIT
      virtual_op = MAYBE;
  #endif
      ex_may_print(eap);
  }
  
  /*
   * ":put".
   */
      static void
  ex_put(exarg_T *eap)
  {
      /* ":0put" works like ":1put!". */
      if (eap->line2 == 0)
      {
  	eap->line2 = 1;
  	eap->forceit = TRUE;
      }
      curwin->w_cursor.lnum = eap->line2;
      do_put(eap->regname, eap->forceit ? BACKWARD : FORWARD, 1L,
  						       PUT_LINE|PUT_CURSLINE);
  }
  
  /*
   * Handle ":copy" and ":move".
   */
      static void
  ex_copymove(exarg_T *eap)
  {
      long	n;
  
      n = get_address(eap, &eap->arg, eap->addr_type, FALSE, FALSE, 1);
      if (eap->arg == NULL)	    /* error detected */
      {
  	eap->nextcmd = NULL;
  	return;
      }
      get_flags(eap);
  
      /*
       * move or copy lines from 'eap->line1'-'eap->line2' to below line 'n'
       */
      if (n == MAXLNUM || n < 0 || n > curbuf->b_ml.ml_line_count)
      {
  	EMSG(_(e_invaddr));
  	return;
      }
  
      if (eap->cmdidx == CMD_move)
      {
  	if (do_move(eap->line1, eap->line2, n) == FAIL)
  	    return;
      }
      else
  	ex_copy(eap->line1, eap->line2, n);
      u_clearline();
      beginline(BL_SOL | BL_FIX);
      ex_may_print(eap);
  }
  
  /*
   * Print the current line if flags were given to the Ex command.
   */
      void
  ex_may_print(exarg_T *eap)
  {
      if (eap->flags != 0)
      {
  	print_line(curwin->w_cursor.lnum, (eap->flags & EXFLAG_NR),
  						  (eap->flags & EXFLAG_LIST));
  	ex_no_reprint = TRUE;
      }
  }
  
  /*
   * ":smagic" and ":snomagic".
   */
      static void
  ex_submagic(exarg_T *eap)
  {
      int		magic_save = p_magic;
  
      p_magic = (eap->cmdidx == CMD_smagic);
      do_sub(eap);
      p_magic = magic_save;
  }
  
  /*
   * ":join".
   */
      static void
  ex_join(exarg_T *eap)
  {
      curwin->w_cursor.lnum = eap->line1;
      if (eap->line1 == eap->line2)
      {
  	if (eap->addr_count >= 2)   /* :2,2join does nothing */
  	    return;
  	if (eap->line2 == curbuf->b_ml.ml_line_count)
  	{
  	    beep_flush();
  	    return;
  	}
  	++eap->line2;
      }
      (void)do_join(eap->line2 - eap->line1 + 1, !eap->forceit, TRUE, TRUE, TRUE);
      beginline(BL_WHITE | BL_FIX);
      ex_may_print(eap);
  }
  
  /*
   * ":[addr]@r" or ":[addr]*r": execute register
   */
      static void
  ex_at(exarg_T *eap)
  {
      int		c;
      int		prev_len = typebuf.tb_len;
  
      curwin->w_cursor.lnum = eap->line2;
      check_cursor_col();
  
  #ifdef USE_ON_FLY_SCROLL
      dont_scroll = TRUE;		/* disallow scrolling here */
  #endif
  
      /* get the register name.  No name means to use the previous one */
      c = *eap->arg;
      if (c == NUL || (c == '*' && *eap->cmd == '*'))
  	c = '@';
      /* Put the register in the typeahead buffer with the "silent" flag. */
      if (do_execreg(c, TRUE, vim_strchr(p_cpo, CPO_EXECBUF) != NULL, TRUE)
  								      == FAIL)
      {
  	beep_flush();
      }
      else
      {
  	int	save_efr = exec_from_reg;
  
  	exec_from_reg = TRUE;
  
  	/*
  	 * Execute from the typeahead buffer.
  	 * Continue until the stuff buffer is empty and all added characters
  	 * have been consumed.
  	 */
  	while (!stuff_empty() || typebuf.tb_len > prev_len)
  	    (void)do_cmdline(NULL, getexline, NULL, DOCMD_NOWAIT|DOCMD_VERBOSE);
  
  	exec_from_reg = save_efr;
      }
  }
  
  /*
   * ":!".
   */
      static void
  ex_bang(exarg_T *eap)
  {
      do_bang(eap->addr_count, eap, eap->forceit, TRUE, TRUE);
  }
  
  /*
   * ":undo".
   */
      static void
  ex_undo(exarg_T *eap)
  {
      if (eap->addr_count == 1)	    /* :undo 123 */
  	undo_time(eap->line2, FALSE, FALSE, TRUE);
      else
  	u_undo(1);
  }
  
  #ifdef FEAT_PERSISTENT_UNDO
      static void
  ex_wundo(exarg_T *eap)
  {
      char_u hash[UNDO_HASH_SIZE];
  
      u_compute_hash(hash);
      u_write_undo(eap->arg, eap->forceit, curbuf, hash);
  }
  
      static void
  ex_rundo(exarg_T *eap)
  {
      char_u hash[UNDO_HASH_SIZE];
  
      u_compute_hash(hash);
      u_read_undo(eap->arg, hash, NULL);
  }
  #endif
  
  /*
   * ":redo".
   */
      static void
  ex_redo(exarg_T *eap UNUSED)
  {
      u_redo(1);
  }
  
  /*
   * ":earlier" and ":later".
   */
      static void
  ex_later(exarg_T *eap)
  {
      long	count = 0;
      int		sec = FALSE;
      int		file = FALSE;
      char_u	*p = eap->arg;
  
      if (*p == NUL)
  	count = 1;
      else if (isdigit(*p))
      {
  	count = getdigits(&p);
  	switch (*p)
  	{
  	    case 's': ++p; sec = TRUE; break;
  	    case 'm': ++p; sec = TRUE; count *= 60; break;
  	    case 'h': ++p; sec = TRUE; count *= 60 * 60; break;
  	    case 'd': ++p; sec = TRUE; count *= 24 * 60 * 60; break;
  	    case 'f': ++p; file = TRUE; break;
  	}
      }
  
      if (*p != NUL)
  	EMSG2(_(e_invarg2), eap->arg);
      else
  	undo_time(eap->cmdidx == CMD_earlier ? -count : count,
  							    sec, file, FALSE);
  }
  
  /*
   * ":redir": start/stop redirection.
   */
      static void
  ex_redir(exarg_T *eap)
  {
      char	*mode;
      char_u	*fname;
      char_u	*arg = eap->arg;
  
  #ifdef FEAT_EVAL
      if (redir_execute)
      {
  	EMSG(_("E930: Cannot use :redir inside execute()"));
  	return;
      }
  #endif
  
      if (STRICMP(eap->arg, "END") == 0)
  	close_redir();
      else
      {
  	if (*arg == '>')
  	{
  	    ++arg;
  	    if (*arg == '>')
  	    {
  		++arg;
  		mode = "a";
  	    }
  	    else
  		mode = "w";
  	    arg = skipwhite(arg);
  
  	    close_redir();
  
  	    /* Expand environment variables and "~/". */
  	    fname = expand_env_save(arg);
  	    if (fname == NULL)
  		return;
  #ifdef FEAT_BROWSE
  	    if (cmdmod.browse)
  	    {
  		char_u	*browseFile;
  
  		browseFile = do_browse(BROWSE_SAVE,
  			(char_u *)_("Save Redirection"),
  			fname, NULL, NULL, BROWSE_FILTER_ALL_FILES, curbuf);
  		if (browseFile == NULL)
  		    return;		/* operation cancelled */
  		vim_free(fname);
  		fname = browseFile;
  		eap->forceit = TRUE;	/* since dialog already asked */
  	    }
  #endif
  
  	    redir_fd = open_exfile(fname, eap->forceit, mode);
  	    vim_free(fname);
  	}
  #ifdef FEAT_EVAL
  	else if (*arg == '@')
  	{
  	    /* redirect to a register a-z (resp. A-Z for appending) */
  	    close_redir();
  	    ++arg;
  	    if (ASCII_ISALPHA(*arg)
  # ifdef FEAT_CLIPBOARD
  		    || *arg == '*'
  		    || *arg == '+'
  # endif
  		    || *arg == '"')
  	    {
  		redir_reg = *arg++;
  		if (*arg == '>' && arg[1] == '>')  /* append */
  		    arg += 2;
  		else
  		{
  		    /* Can use both "@a" and "@a>". */
  		    if (*arg == '>')
  			arg++;
  		    /* Make register empty when not using @A-@Z and the
  		     * command is valid. */
  		    if (*arg == NUL && !isupper(redir_reg))
  			write_reg_contents(redir_reg, (char_u *)"", -1, FALSE);
  		}
  	    }
  	    if (*arg != NUL)
  	    {
  		redir_reg = 0;
  		EMSG2(_(e_invarg2), eap->arg);
  	    }
  	}
  	else if (*arg == '=' && arg[1] == '>')
  	{
  	    int append;
  
  	    /* redirect to a variable */
  	    close_redir();
  	    arg += 2;
  
  	    if (*arg == '>')
  	    {
  		++arg;
  		append = TRUE;
  	    }
  	    else
  		append = FALSE;
  
  	    if (var_redir_start(skipwhite(arg), append) == OK)
  		redir_vname = 1;
  	}
  #endif
  
  	/* TODO: redirect to a buffer */
  
  	else
  	    EMSG2(_(e_invarg2), eap->arg);
      }
  
      /* Make sure redirection is not off.  Can happen for cmdline completion
       * that indirectly invokes a command to catch its output. */
      if (redir_fd != NULL
  #ifdef FEAT_EVAL
  			  || redir_reg || redir_vname
  #endif
  							)
  	redir_off = FALSE;
  }
  
  /*
   * ":redraw": force redraw
   */
      void
  ex_redraw(exarg_T *eap)
  {
      int		r = RedrawingDisabled;
      int		p = p_lz;
  
      RedrawingDisabled = 0;
      p_lz = FALSE;
      validate_cursor();
      update_topline();
      update_screen(eap->forceit ? CLEAR : VIsual_active ? INVERTED : 0);
  #ifdef FEAT_TITLE
      if (need_maketitle)
  	maketitle();
  #endif
      RedrawingDisabled = r;
      p_lz = p;
  
      /* Reset msg_didout, so that a message that's there is overwritten. */
      msg_didout = FALSE;
      msg_col = 0;
  
      /* No need to wait after an intentional redraw. */
      need_wait_return = FALSE;
  
      out_flush();
  }
  
  /*
   * ":redrawstatus": force redraw of status line(s)
   */
      static void
  ex_redrawstatus(exarg_T *eap UNUSED)
  {
      int		r = RedrawingDisabled;
      int		p = p_lz;
  
      RedrawingDisabled = 0;
      p_lz = FALSE;
      if (eap->forceit)
  	status_redraw_all();
      else
  	status_redraw_curbuf();
      update_screen(VIsual_active ? INVERTED : 0);
      RedrawingDisabled = r;
      p_lz = p;
      out_flush();
  }
  
      static void
  close_redir(void)
  {
      if (redir_fd != NULL)
      {
  	fclose(redir_fd);
  	redir_fd = NULL;
      }
  #ifdef FEAT_EVAL
      redir_reg = 0;
      if (redir_vname)
      {
  	var_redir_stop();
  	redir_vname = 0;
      }
  #endif
  }
  
  #if defined(FEAT_SESSION) && defined(USE_CRNL)
  # define MKSESSION_NL
  static int mksession_nl = FALSE;    /* use NL only in put_eol() */
  #endif
  
  /*
   * ":mkexrc", ":mkvimrc", ":mkview" and ":mksession".
   */
      static void
  ex_mkrc(
      exarg_T	*eap)
  {
      FILE	*fd;
      int		failed = FALSE;
      char_u	*fname;
  #ifdef FEAT_BROWSE
      char_u	*browseFile = NULL;
  #endif
  #ifdef FEAT_SESSION
      int		view_session = FALSE;
      int		using_vdir = FALSE;	/* using 'viewdir'? */
      char_u	*viewFile = NULL;
      unsigned	*flagp;
  #endif
  
      if (eap->cmdidx == CMD_mksession || eap->cmdidx == CMD_mkview)
      {
  #ifdef FEAT_SESSION
  	view_session = TRUE;
  #else
  	ex_ni(eap);
  	return;
  #endif
      }
  
  #ifdef FEAT_SESSION
      /* Use the short file name until ":lcd" is used.  We also don't use the
       * short file name when 'acd' is set, that is checked later. */
      did_lcd = FALSE;
  
      /* ":mkview" or ":mkview 9": generate file name with 'viewdir' */
      if (eap->cmdidx == CMD_mkview
  	    && (*eap->arg == NUL
  		|| (vim_isdigit(*eap->arg) && eap->arg[1] == NUL)))
      {
  	eap->forceit = TRUE;
  	fname = get_view_file(*eap->arg);
  	if (fname == NULL)
  	    return;
  	viewFile = fname;
  	using_vdir = TRUE;
      }
      else
  #endif
  	if (*eap->arg != NUL)
  	fname = eap->arg;
      else if (eap->cmdidx == CMD_mkvimrc)
  	fname = (char_u *)VIMRC_FILE;
  #ifdef FEAT_SESSION
      else if (eap->cmdidx == CMD_mksession)
  	fname = (char_u *)SESSION_FILE;
  #endif
      else
  	fname = (char_u *)EXRC_FILE;
  
  #ifdef FEAT_BROWSE
      if (cmdmod.browse)
      {
  	browseFile = do_browse(BROWSE_SAVE,
  # ifdef FEAT_SESSION
  		eap->cmdidx == CMD_mkview ? (char_u *)_("Save View") :
  		eap->cmdidx == CMD_mksession ? (char_u *)_("Save Session") :
  # endif
  		(char_u *)_("Save Setup"),
  		fname, (char_u *)"vim", NULL, BROWSE_FILTER_MACROS, NULL);
  	if (browseFile == NULL)
  	    goto theend;
  	fname = browseFile;
  	eap->forceit = TRUE;	/* since dialog already asked */
      }
  #endif
  
  #if defined(FEAT_SESSION) && defined(vim_mkdir)
      /* When using 'viewdir' may have to create the directory. */
      if (using_vdir && !mch_isdir(p_vdir))
  	vim_mkdir_emsg(p_vdir, 0755);
  #endif
  
      fd = open_exfile(fname, eap->forceit, WRITEBIN);
      if (fd != NULL)
      {
  #ifdef FEAT_SESSION
  	if (eap->cmdidx == CMD_mkview)
  	    flagp = &vop_flags;
  	else
  	    flagp = &ssop_flags;
  #endif
  
  #ifdef MKSESSION_NL
  	/* "unix" in 'sessionoptions': use NL line separator */
  	if (view_session && (*flagp & SSOP_UNIX))
  	    mksession_nl = TRUE;
  #endif
  
  	/* Write the version command for :mkvimrc */
  	if (eap->cmdidx == CMD_mkvimrc)
  	    (void)put_line(fd, "version 6.0");
  
  #ifdef FEAT_SESSION
  	if (eap->cmdidx == CMD_mksession)
  	{
  	    if (put_line(fd, "let SessionLoad = 1") == FAIL)
  		failed = TRUE;
  	}
  
  	if (eap->cmdidx != CMD_mkview)
  #endif
  	{
  	    /* Write setting 'compatible' first, because it has side effects.
  	     * For that same reason only do it when needed. */
  	    if (p_cp)
  		(void)put_line(fd, "if !&cp | set cp | endif");
  	    else
  		(void)put_line(fd, "if &cp | set nocp | endif");
  	}
  
  #ifdef FEAT_SESSION
  	if (!view_session
  		|| (eap->cmdidx == CMD_mksession
  		    && (*flagp & SSOP_OPTIONS)))
  #endif
  	    failed |= (makemap(fd, NULL) == FAIL
  				   || makeset(fd, OPT_GLOBAL, FALSE) == FAIL);
  
  #ifdef FEAT_SESSION
  	if (!failed && view_session)
  	{
  	    if (put_line(fd, "let s:so_save = &so | let s:siso_save = &siso | set so=0 siso=0") == FAIL)
  		failed = TRUE;
  	    if (eap->cmdidx == CMD_mksession)
  	    {
  		char_u *dirnow;	 /* current directory */
  
  		dirnow = alloc(MAXPATHL);
  		if (dirnow == NULL)
  		    failed = TRUE;
  		else
  		{
  		    /*
  		     * Change to session file's dir.
  		     */
  		    if (mch_dirname(dirnow, MAXPATHL) == FAIL
  					    || mch_chdir((char *)dirnow) != 0)
  			*dirnow = NUL;
  		    if (*dirnow != NUL && (ssop_flags & SSOP_SESDIR))
  		    {
  			if (vim_chdirfile(fname, NULL) == OK)
  			    shorten_fnames(TRUE);
  		    }
  		    else if (*dirnow != NUL
  			   && (ssop_flags & SSOP_CURDIR) && globaldir != NULL)
  		    {
  			if (mch_chdir((char *)globaldir) == 0)
  			    shorten_fnames(TRUE);
  		    }
  
  		    failed |= (makeopens(fd, dirnow) == FAIL);
  
  		    /* restore original dir */
  		    if (*dirnow != NUL && ((ssop_flags & SSOP_SESDIR)
  			|| ((ssop_flags & SSOP_CURDIR) && globaldir != NULL)))
  		    {
  			if (mch_chdir((char *)dirnow) != 0)
  			    EMSG(_(e_prev_dir));
  			shorten_fnames(TRUE);
  		    }
  		    vim_free(dirnow);
  		}
  	    }
  	    else
  	    {
  		failed |= (put_view(fd, curwin, !using_vdir, flagp,
  								 -1) == FAIL);
  	    }
  	    if (put_line(fd, "let &so = s:so_save | let &siso = s:siso_save")
  								      == FAIL)
  		failed = TRUE;
  	    if (put_line(fd, "doautoall SessionLoadPost") == FAIL)
  		failed = TRUE;
  	    if (eap->cmdidx == CMD_mksession)
  	    {
  		if (put_line(fd, "unlet SessionLoad") == FAIL)
  		    failed = TRUE;
  	    }
  	}
  #endif
  	if (put_line(fd, "\" vim: set ft=vim :") == FAIL)
  	    failed = TRUE;
  
  	failed |= fclose(fd);
  
  	if (failed)
  	    EMSG(_(e_write));
  #if defined(FEAT_EVAL) && defined(FEAT_SESSION)
  	else if (eap->cmdidx == CMD_mksession)
  	{
  	    /* successful session write - set this_session var */
  	    char_u	*tbuf;
  
  	    tbuf = alloc(MAXPATHL);
  	    if (tbuf != NULL)
  	    {
  		if (vim_FullName(fname, tbuf, MAXPATHL, FALSE) == OK)
  		    set_vim_var_string(VV_THIS_SESSION, tbuf, -1);
  		vim_free(tbuf);
  	    }
  	}
  #endif
  #ifdef MKSESSION_NL
  	mksession_nl = FALSE;
  #endif
      }
  
  #ifdef FEAT_BROWSE
  theend:
      vim_free(browseFile);
  #endif
  #ifdef FEAT_SESSION
      vim_free(viewFile);
  #endif
  }
  
  #if ((defined(FEAT_SESSION) || defined(FEAT_EVAL)) && defined(vim_mkdir)) \
  	|| defined(PROTO)
      int
  vim_mkdir_emsg(char_u *name, int prot)
  {
      if (vim_mkdir(name, prot) != 0)
      {
  	EMSG2(_("E739: Cannot create directory: %s"), name);
  	return FAIL;
      }
      return OK;
  }
  #endif
  
  /*
   * Open a file for writing for an Ex command, with some checks.
   * Return file descriptor, or NULL on failure.
   */
      FILE *
  open_exfile(
      char_u	*fname,
      int		forceit,
      char	*mode)	    /* "w" for create new file or "a" for append */
  {
      FILE	*fd;
  
  #ifdef UNIX
      /* with Unix it is possible to open a directory */
      if (mch_isdir(fname))
      {
  	EMSG2(_(e_isadir2), fname);
  	return NULL;
      }
  #endif
      if (!forceit && *mode != 'a' && vim_fexists(fname))
      {
  	EMSG2(_("E189: \"%s\" exists (add ! to override)"), fname);
  	return NULL;
      }
  
      if ((fd = mch_fopen((char *)fname, mode)) == NULL)
  	EMSG2(_("E190: Cannot open \"%s\" for writing"), fname);
  
      return fd;
  }
  
  /*
   * ":mark" and ":k".
   */
      static void
  ex_mark(exarg_T *eap)
  {
      pos_T	pos;
  
      if (*eap->arg == NUL)		/* No argument? */
  	EMSG(_(e_argreq));
      else if (eap->arg[1] != NUL)	/* more than one character? */
  	EMSG(_(e_trailing));
      else
      {
  	pos = curwin->w_cursor;		/* save curwin->w_cursor */
  	curwin->w_cursor.lnum = eap->line2;
  	beginline(BL_WHITE | BL_FIX);
  	if (setmark(*eap->arg) == FAIL)	/* set mark */
  	    EMSG(_("E191: Argument must be a letter or forward/backward quote"));
  	curwin->w_cursor = pos;		/* restore curwin->w_cursor */
      }
  }
  
  /*
   * Update w_topline, w_leftcol and the cursor position.
   */
      void
  update_topline_cursor(void)
  {
      check_cursor();		/* put cursor on valid line */
      update_topline();
      if (!curwin->w_p_wrap)
  	validate_cursor();
      update_curswant();
  }
  
  /*
   * Save the current State and go to Normal mode.
   * Return TRUE if the typeahead could be saved.
   */
      int
  save_current_state(save_state_T *sst)
  {
      sst->save_msg_scroll = msg_scroll;
      sst->save_restart_edit = restart_edit;
      sst->save_msg_didout = msg_didout;
      sst->save_State = State;
      sst->save_insertmode = p_im;
      sst->save_finish_op = finish_op;
      sst->save_opcount = opcount;
  
      msg_scroll = FALSE;	    /* no msg scrolling in Normal mode */
      restart_edit = 0;	    /* don't go to Insert mode */
      p_im = FALSE;	    /* don't use 'insertmode' */
  
      /*
       * Save the current typeahead.  This is required to allow using ":normal"
       * from an event handler and makes sure we don't hang when the argument
       * ends with half a command.
       */
      save_typeahead(&sst->tabuf);
      return sst->tabuf.typebuf_valid;
  }
  
      void
  restore_current_state(save_state_T *sst)
  {
      /* Restore the previous typeahead. */
      restore_typeahead(&sst->tabuf);
  
      msg_scroll = sst->save_msg_scroll;
      restart_edit = sst->save_restart_edit;
      p_im = sst->save_insertmode;
      finish_op = sst->save_finish_op;
      opcount = sst->save_opcount;
      msg_didout |= sst->save_msg_didout;	/* don't reset msg_didout now */
  
      /* Restore the state (needed when called from a function executed for
       * 'indentexpr'). Update the mouse and cursor, they may have changed. */
      State = sst->save_State;
  #ifdef CURSOR_SHAPE
      ui_cursor_shape();		/* may show different cursor shape */
  #endif
  }
  
  /*
   * ":normal[!] {commands}": Execute normal mode commands.
   */
      void
  ex_normal(exarg_T *eap)
  {
      save_state_T save_state;
  #ifdef FEAT_MBYTE
      char_u	*arg = NULL;
      int		l;
      char_u	*p;
  #endif
  
      if (ex_normal_lock > 0)
      {
  	EMSG(_(e_secure));
  	return;
      }
      if (ex_normal_busy >= p_mmd)
      {
  	EMSG(_("E192: Recursive use of :normal too deep"));
  	return;
      }
  
  #ifdef FEAT_MBYTE
      /*
       * vgetc() expects a CSI and K_SPECIAL to have been escaped.  Don't do
       * this for the K_SPECIAL leading byte, otherwise special keys will not
       * work.
       */
      if (has_mbyte)
      {
  	int	len = 0;
  
  	/* Count the number of characters to be escaped. */
  	for (p = eap->arg; *p != NUL; ++p)
  	{
  # ifdef FEAT_GUI
  	    if (*p == CSI)  /* leadbyte CSI */
  		len += 2;
  # endif
  	    for (l = (*mb_ptr2len)(p) - 1; l > 0; --l)
  		if (*++p == K_SPECIAL	  /* trailbyte K_SPECIAL or CSI */
  # ifdef FEAT_GUI
  			|| *p == CSI
  # endif
  			)
  		    len += 2;
  	}
  	if (len > 0)
  	{
  	    arg = alloc((unsigned)(STRLEN(eap->arg) + len + 1));
  	    if (arg != NULL)
  	    {
  		len = 0;
  		for (p = eap->arg; *p != NUL; ++p)
  		{
  		    arg[len++] = *p;
  # ifdef FEAT_GUI
  		    if (*p == CSI)
  		    {
  			arg[len++] = KS_EXTRA;
  			arg[len++] = (int)KE_CSI;
  		    }
  # endif
  		    for (l = (*mb_ptr2len)(p) - 1; l > 0; --l)
  		    {
  			arg[len++] = *++p;
  			if (*p == K_SPECIAL)
  			{
  			    arg[len++] = KS_SPECIAL;
  			    arg[len++] = KE_FILLER;
  			}
  # ifdef FEAT_GUI
  			else if (*p == CSI)
  			{
  			    arg[len++] = KS_EXTRA;
  			    arg[len++] = (int)KE_CSI;
  			}
  # endif
  		    }
  		    arg[len] = NUL;
  		}
  	    }
  	}
      }
  #endif
  
      ++ex_normal_busy;
      if (save_current_state(&save_state))
      {
  	/*
  	 * Repeat the :normal command for each line in the range.  When no
  	 * range given, execute it just once, without positioning the cursor
  	 * first.
  	 */
  	do
  	{
  	    if (eap->addr_count != 0)
  	    {
  		curwin->w_cursor.lnum = eap->line1++;
  		curwin->w_cursor.col = 0;
  		check_cursor_moved(curwin);
  	    }
  
  	    exec_normal_cmd(
  #ifdef FEAT_MBYTE
  		    arg != NULL ? arg :
  #endif
  		    eap->arg, eap->forceit ? REMAP_NONE : REMAP_YES, FALSE);
  	}
  	while (eap->addr_count > 0 && eap->line1 <= eap->line2 && !got_int);
      }
  
      /* Might not return to the main loop when in an event handler. */
      update_topline_cursor();
  
      restore_current_state(&save_state);
      --ex_normal_busy;
  #ifdef FEAT_MOUSE
      setmouse();
  #endif
  #ifdef CURSOR_SHAPE
      ui_cursor_shape();		/* may show different cursor shape */
  #endif
  
  #ifdef FEAT_MBYTE
      vim_free(arg);
  #endif
  }
  
  /*
   * ":startinsert", ":startreplace" and ":startgreplace"
   */
      static void
  ex_startinsert(exarg_T *eap)
  {
      if (eap->forceit)
      {
  	/* cursor line can be zero on startup */
  	if (!curwin->w_cursor.lnum)
  	    curwin->w_cursor.lnum = 1;
  	coladvance((colnr_T)MAXCOL);
  	curwin->w_curswant = MAXCOL;
  	curwin->w_set_curswant = FALSE;
      }
  
      /* Ignore the command when already in Insert mode.  Inserting an
       * expression register that invokes a function can do this. */
      if (State & INSERT)
  	return;
  
      if (eap->cmdidx == CMD_startinsert)
  	restart_edit = 'a';
      else if (eap->cmdidx == CMD_startreplace)
  	restart_edit = 'R';
      else
  	restart_edit = 'V';
  
      if (!eap->forceit)
      {
  	if (eap->cmdidx == CMD_startinsert)
  	    restart_edit = 'i';
  	curwin->w_curswant = 0;	    /* avoid MAXCOL */
      }
  }
  
  /*
   * ":stopinsert"
   */
      static void
  ex_stopinsert(exarg_T *eap UNUSED)
  {
      restart_edit = 0;
      stop_insert_mode = TRUE;
      clearmode();
  }
  
  /*
   * Execute normal mode command "cmd".
   * "remap" can be REMAP_NONE or REMAP_YES.
   */
      void
  exec_normal_cmd(char_u *cmd, int remap, int silent)
  {
      /* Stuff the argument into the typeahead buffer. */
      ins_typebuf(cmd, remap, 0, TRUE, silent);
      exec_normal(FALSE);
  }
  
  /*
   * Execute normal_cmd() until there is no typeahead left.
   */
      void
  exec_normal(int was_typed)
  {
      oparg_T	oa;
  
      clear_oparg(&oa);
      finish_op = FALSE;
      while ((!stuff_empty() || ((was_typed || !typebuf_typed())
  		    && typebuf.tb_len > 0)) && !got_int)
      {
  	update_topline_cursor();
  	normal_cmd(&oa, TRUE);	/* execute a Normal mode cmd */
      }
  }
  
  #ifdef FEAT_FIND_ID
      static void
  ex_checkpath(exarg_T *eap)
  {
      find_pattern_in_path(NULL, 0, 0, FALSE, FALSE, CHECK_PATH, 1L,
  				   eap->forceit ? ACTION_SHOW_ALL : ACTION_SHOW,
  					      (linenr_T)1, (linenr_T)MAXLNUM);
  }
  
  #if defined(FEAT_QUICKFIX)
  /*
   * ":psearch"
   */
      static void
  ex_psearch(exarg_T *eap)
  {
      g_do_tagpreview = p_pvh;
      ex_findpat(eap);
      g_do_tagpreview = 0;
  }
  #endif
  
      static void
  ex_findpat(exarg_T *eap)
  {
      int		whole = TRUE;
      long	n;
      char_u	*p;
      int		action;
  
      switch (cmdnames[eap->cmdidx].cmd_name[2])
      {
  	case 'e':	/* ":psearch", ":isearch" and ":dsearch" */
  		if (cmdnames[eap->cmdidx].cmd_name[0] == 'p')
  		    action = ACTION_GOTO;
  		else
  		    action = ACTION_SHOW;
  		break;
  	case 'i':	/* ":ilist" and ":dlist" */
  		action = ACTION_SHOW_ALL;
  		break;
  	case 'u':	/* ":ijump" and ":djump" */
  		action = ACTION_GOTO;
  		break;
  	default:	/* ":isplit" and ":dsplit" */
  		action = ACTION_SPLIT;
  		break;
      }
  
      n = 1;
      if (vim_isdigit(*eap->arg))	/* get count */
      {
  	n = getdigits(&eap->arg);
  	eap->arg = skipwhite(eap->arg);
      }
      if (*eap->arg == '/')   /* Match regexp, not just whole words */
      {
  	whole = FALSE;
  	++eap->arg;
  	p = skip_regexp(eap->arg, '/', p_magic, NULL);
  	if (*p)
  	{
  	    *p++ = NUL;
  	    p = skipwhite(p);
  
  	    /* Check for trailing illegal characters */
  	    if (!ends_excmd(*p))
  		eap->errmsg = e_trailing;
  	    else
  		eap->nextcmd = check_nextcmd(p);
  	}
      }
      if (!eap->skip)
  	find_pattern_in_path(eap->arg, 0, (int)STRLEN(eap->arg),
  			    whole, !eap->forceit,
  			    *eap->cmd == 'd' ?	FIND_DEFINE : FIND_ANY,
  			    n, action, eap->line1, eap->line2);
  }
  #endif
  
  
  #ifdef FEAT_QUICKFIX
  /*
   * ":ptag", ":ptselect", ":ptjump", ":ptnext", etc.
   */
      static void
  ex_ptag(exarg_T *eap)
  {
      g_do_tagpreview = p_pvh;  /* will be reset to 0 in ex_tag_cmd() */
      ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name + 1);
  }
  
  /*
   * ":pedit"
   */
      static void
  ex_pedit(exarg_T *eap)
  {
      win_T	*curwin_save = curwin;
  
      g_do_tagpreview = p_pvh;
      prepare_tagpreview(TRUE);
      keep_help_flag = bt_help(curwin_save->w_buffer);
      do_exedit(eap, NULL);
      keep_help_flag = FALSE;
      if (curwin != curwin_save && win_valid(curwin_save))
      {
  	/* Return cursor to where we were */
  	validate_cursor();
  	redraw_later(VALID);
  	win_enter(curwin_save, TRUE);
      }
      g_do_tagpreview = 0;
  }
  #endif
  
  /*
   * ":stag", ":stselect" and ":stjump".
   */
      static void
  ex_stag(exarg_T *eap)
  {
      postponed_split = -1;
      postponed_split_flags = cmdmod.split;
      postponed_split_tab = cmdmod.tab;
      ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name + 1);
      postponed_split_flags = 0;
      postponed_split_tab = 0;
  }
  
  /*
   * ":tag", ":tselect", ":tjump", ":tnext", etc.
   */
      static void
  ex_tag(exarg_T *eap)
  {
      ex_tag_cmd(eap, cmdnames[eap->cmdidx].cmd_name);
  }
  
      static void
  ex_tag_cmd(exarg_T *eap, char_u *name)
  {
      int		cmd;
  
      switch (name[1])
      {
  	case 'j': cmd = DT_JUMP;	/* ":tjump" */
  		  break;
  	case 's': cmd = DT_SELECT;	/* ":tselect" */
  		  break;
  	case 'p': cmd = DT_PREV;	/* ":tprevious" */
  		  break;
  	case 'N': cmd = DT_PREV;	/* ":tNext" */
  		  break;
  	case 'n': cmd = DT_NEXT;	/* ":tnext" */
  		  break;
  	case 'o': cmd = DT_POP;		/* ":pop" */
  		  break;
  	case 'f':			/* ":tfirst" */
  	case 'r': cmd = DT_FIRST;	/* ":trewind" */
  		  break;
  	case 'l': cmd = DT_LAST;	/* ":tlast" */
  		  break;
  	default:			/* ":tag" */
  #ifdef FEAT_CSCOPE
  		  if (p_cst && *eap->arg != NUL)
  		  {
  		      ex_cstag(eap);
  		      return;
  		  }
  #endif
  		  cmd = DT_TAG;
  		  break;
      }
  
      if (name[0] == 'l')
      {
  #ifndef FEAT_QUICKFIX
  	ex_ni(eap);
  	return;
  #else
  	cmd = DT_LTAG;
  #endif
      }
  
      do_tag(eap->arg, cmd, eap->addr_count > 0 ? (int)eap->line2 : 1,
  							  eap->forceit, TRUE);
  }
  
  /*
   * Check "str" for starting with a special cmdline variable.
   * If found return one of the SPEC_ values and set "*usedlen" to the length of
   * the variable.  Otherwise return -1 and "*usedlen" is unchanged.
   */
      int
  find_cmdline_var(char_u *src, int *usedlen)
  {
      int		len;
      int		i;
      static char *(spec_str[]) = {
  		    "%",
  #define SPEC_PERC   0
  		    "#",
  #define SPEC_HASH   (SPEC_PERC + 1)
  		    "<cword>",		/* cursor word */
  #define SPEC_CWORD  (SPEC_HASH + 1)
  		    "<cWORD>",		/* cursor WORD */
  #define SPEC_CCWORD (SPEC_CWORD + 1)
  		    "<cexpr>",		/* expr under cursor */
  #define SPEC_CEXPR  (SPEC_CCWORD + 1)
  		    "<cfile>",		/* cursor path name */
  #define SPEC_CFILE  (SPEC_CEXPR + 1)
  		    "<sfile>",		/* ":so" file name */
  #define SPEC_SFILE  (SPEC_CFILE + 1)
  		    "<slnum>",		/* ":so" file line number */
  #define SPEC_SLNUM  (SPEC_SFILE + 1)
  #ifdef FEAT_AUTOCMD
  		    "<afile>",		/* autocommand file name */
  # define SPEC_AFILE (SPEC_SLNUM + 1)
  		    "<abuf>",		/* autocommand buffer number */
  # define SPEC_ABUF  (SPEC_AFILE + 1)
  		    "<amatch>",		/* autocommand match name */
  # define SPEC_AMATCH (SPEC_ABUF + 1)
  #endif
  #ifdef FEAT_CLIENTSERVER
  		    "<client>"
  # ifdef FEAT_AUTOCMD
  #  define SPEC_CLIENT (SPEC_AMATCH + 1)
  # else
  #  define SPEC_CLIENT (SPEC_SLNUM + 1)
  # endif
  #endif
      };
  
      for (i = 0; i < (int)(sizeof(spec_str) / sizeof(char *)); ++i)
      {
  	len = (int)STRLEN(spec_str[i]);
  	if (STRNCMP(src, spec_str[i], len) == 0)
  	{
  	    *usedlen = len;
  	    return i;
  	}
      }
      return -1;
  }
  
  /*
   * Evaluate cmdline variables.
   *
   * change '%'	    to curbuf->b_ffname
   *	  '#'	    to curwin->w_altfile
   *	  '<cword>' to word under the cursor
   *	  '<cWORD>' to WORD under the cursor
   *	  '<cfile>' to path name under the cursor
   *	  '<sfile>' to sourced file name
   *	  '<slnum>' to sourced file line number
   *	  '<afile>' to file name for autocommand
   *	  '<abuf>'  to buffer number for autocommand
   *	  '<amatch>' to matching name for autocommand
   *
   * When an error is detected, "errormsg" is set to a non-NULL pointer (may be
   * "" for error without a message) and NULL is returned.
   * Returns an allocated string if a valid match was found.
   * Returns NULL if no match was found.	"usedlen" then still contains the
   * number of characters to skip.
   */
      char_u *
  eval_vars(
      char_u	*src,		/* pointer into commandline */
      char_u	*srcstart,	/* beginning of valid memory for src */
      int		*usedlen,	/* characters after src that are used */
      linenr_T	*lnump,		/* line number for :e command, or NULL */
      char_u	**errormsg,	/* pointer to error message */
      int		*escaped)	/* return value has escaped white space (can
  				 * be NULL) */
  {
      int		i;
      char_u	*s;
      char_u	*result;
      char_u	*resultbuf = NULL;
      int		resultlen;
      buf_T	*buf;
      int		valid = VALID_HEAD + VALID_PATH;    /* assume valid result */
      int		spec_idx;
  #ifdef FEAT_MODIFY_FNAME
      int		skip_mod = FALSE;
  #endif
      char_u	strbuf[30];
  
      *errormsg = NULL;
      if (escaped != NULL)
  	*escaped = FALSE;
  
      /*
       * Check if there is something to do.
       */
      spec_idx = find_cmdline_var(src, usedlen);
      if (spec_idx < 0)	/* no match */
      {
  	*usedlen = 1;
  	return NULL;
      }
  
      /*
       * Skip when preceded with a backslash "\%" and "\#".
       * Note: In "\\%" the % is also not recognized!
       */
      if (src > srcstart && src[-1] == '\\')
      {
  	*usedlen = 0;
  	STRMOVE(src - 1, src);	/* remove backslash */
  	return NULL;
      }
  
      /*
       * word or WORD under cursor
       */
      if (spec_idx == SPEC_CWORD || spec_idx == SPEC_CCWORD
  						     || spec_idx == SPEC_CEXPR)
      {
  	resultlen = find_ident_under_cursor(&result,
  		spec_idx == SPEC_CWORD ? (FIND_IDENT | FIND_STRING)
  	      : spec_idx == SPEC_CEXPR ? (FIND_IDENT | FIND_STRING | FIND_EVAL)
  	      : FIND_STRING);
  	if (resultlen == 0)
  	{
  	    *errormsg = (char_u *)"";
  	    return NULL;
  	}
      }
  
      /*
       * '#': Alternate file name
       * '%': Current file name
       *	    File name under the cursor
       *	    File name for autocommand
       *	and following modifiers
       */
      else
      {
  	switch (spec_idx)
  	{
  	case SPEC_PERC:		/* '%': current file */
  		if (curbuf->b_fname == NULL)
  		{
  		    result = (char_u *)"";
  		    valid = 0;	    /* Must have ":p:h" to be valid */
  		}
  		else
  		    result = curbuf->b_fname;
  		break;
  
  	case SPEC_HASH:		/* '#' or "#99": alternate file */
  		if (src[1] == '#')  /* "##": the argument list */
  		{
  		    result = arg_all();
  		    resultbuf = result;
  		    *usedlen = 2;
  		    if (escaped != NULL)
  			*escaped = TRUE;
  #ifdef FEAT_MODIFY_FNAME
  		    skip_mod = TRUE;
  #endif
  		    break;
  		}
  		s = src + 1;
  		if (*s == '<')		/* "#<99" uses v:oldfiles */
  		    ++s;
  		i = (int)getdigits(&s);
  		if (s == src + 2 && src[1] == '-')
  		    /* just a minus sign, don't skip over it */
  		    s--;
  		*usedlen = (int)(s - src); /* length of what we expand */
  
  		if (src[1] == '<' && i != 0)
  		{
  		    if (*usedlen < 2)
  		    {
  			/* Should we give an error message for #<text? */
  			*usedlen = 1;
  			return NULL;
  		    }
  #ifdef FEAT_EVAL
  		    result = list_find_str(get_vim_var_list(VV_OLDFILES),
  								     (long)i);
  		    if (result == NULL)
  		    {
  			*errormsg = (char_u *)"";
  			return NULL;
  		    }
  #else
  		    *errormsg = (char_u *)_("E809: #< is not available without the +eval feature");
  		    return NULL;
  #endif
  		}
  		else
  		{
  		    if (i == 0 && src[1] == '<' && *usedlen > 1)
  			*usedlen = 1;
  		    buf = buflist_findnr(i);
  		    if (buf == NULL)
  		    {
  			*errormsg = (char_u *)_("E194: No alternate file name to substitute for '#'");
  			return NULL;
  		    }
  		    if (lnump != NULL)
  			*lnump = ECMD_LAST;
  		    if (buf->b_fname == NULL)
  		    {
  			result = (char_u *)"";
  			valid = 0;	    /* Must have ":p:h" to be valid */
  		    }
  		    else
  			result = buf->b_fname;
  		}
  		break;
  
  #ifdef FEAT_SEARCHPATH
  	case SPEC_CFILE:	/* file name under cursor */
  		result = file_name_at_cursor(FNAME_MESS|FNAME_HYP, 1L, NULL);
  		if (result == NULL)
  		{
  		    *errormsg = (char_u *)"";
  		    return NULL;
  		}
  		resultbuf = result;	    /* remember allocated string */
  		break;
  #endif
  
  #ifdef FEAT_AUTOCMD
  	case SPEC_AFILE:	/* file name for autocommand */
  		result = autocmd_fname;
  		if (result != NULL && !autocmd_fname_full)
  		{
  		    /* Still need to turn the fname into a full path.  It is
  		     * postponed to avoid a delay when <afile> is not used. */
  		    autocmd_fname_full = TRUE;
  		    result = FullName_save(autocmd_fname, FALSE);
  		    vim_free(autocmd_fname);
  		    autocmd_fname = result;
  		}
  		if (result == NULL)
  		{
  		    *errormsg = (char_u *)_("E495: no autocommand file name to substitute for \"<afile>\"");
  		    return NULL;
  		}
  		result = shorten_fname1(result);
  		break;
  
  	case SPEC_ABUF:		/* buffer number for autocommand */
  		if (autocmd_bufnr <= 0)
  		{
  		    *errormsg = (char_u *)_("E496: no autocommand buffer number to substitute for \"<abuf>\"");
  		    return NULL;
  		}
  		sprintf((char *)strbuf, "%d", autocmd_bufnr);
  		result = strbuf;
  		break;
  
  	case SPEC_AMATCH:	/* match name for autocommand */
  		result = autocmd_match;
  		if (result == NULL)
  		{
  		    *errormsg = (char_u *)_("E497: no autocommand match name to substitute for \"<amatch>\"");
  		    return NULL;
  		}
  		break;
  
  #endif
  	case SPEC_SFILE:	/* file name for ":so" command */
  		result = sourcing_name;
  		if (result == NULL)
  		{
  		    *errormsg = (char_u *)_("E498: no :source file name to substitute for \"<sfile>\"");
  		    return NULL;
  		}
  		break;
  	case SPEC_SLNUM:	/* line in file for ":so" command */
  		if (sourcing_name == NULL || sourcing_lnum == 0)
  		{
  		    *errormsg = (char_u *)_("E842: no line number to use for \"<slnum>\"");
  		    return NULL;
  		}
  		sprintf((char *)strbuf, "%ld", (long)sourcing_lnum);
  		result = strbuf;
  		break;
  #if defined(FEAT_CLIENTSERVER)
  	case SPEC_CLIENT:	/* Source of last submitted input */
  		sprintf((char *)strbuf, PRINTF_HEX_LONG_U,
  							(long_u)clientWindow);
  		result = strbuf;
  		break;
  #endif
  	default:
  		result = (char_u *)""; /* avoid gcc warning */
  		break;
  	}
  
  	resultlen = (int)STRLEN(result);	/* length of new string */
  	if (src[*usedlen] == '<')	/* remove the file name extension */
  	{
  	    ++*usedlen;
  	    if ((s = vim_strrchr(result, '.')) != NULL && s >= gettail(result))
  		resultlen = (int)(s - result);
  	}
  #ifdef FEAT_MODIFY_FNAME
  	else if (!skip_mod)
  	{
  	    valid |= modify_fname(src, usedlen, &result, &resultbuf,
  								  &resultlen);
  	    if (result == NULL)
  	    {
  		*errormsg = (char_u *)"";
  		return NULL;
  	    }
  	}
  #endif
      }
  
      if (resultlen == 0 || valid != VALID_HEAD + VALID_PATH)
      {
  	if (valid != VALID_HEAD + VALID_PATH)
  	    /* xgettext:no-c-format */
  	    *errormsg = (char_u *)_("E499: Empty file name for '%' or '#', only works with \":p:h\"");
  	else
  	    *errormsg = (char_u *)_("E500: Evaluates to an empty string");
  	result = NULL;
      }
      else
  	result = vim_strnsave(result, resultlen);
      vim_free(resultbuf);
      return result;
  }
  
  /*
   * Concatenate all files in the argument list, separated by spaces, and return
   * it in one allocated string.
   * Spaces and backslashes in the file names are escaped with a backslash.
   * Returns NULL when out of memory.
   */
      static char_u *
  arg_all(void)
  {
      int		len;
      int		idx;
      char_u	*retval = NULL;
      char_u	*p;
  
      /*
       * Do this loop two times:
       * first time: compute the total length
       * second time: concatenate the names
       */
      for (;;)
      {
  	len = 0;
  	for (idx = 0; idx < ARGCOUNT; ++idx)
  	{
  	    p = alist_name(&ARGLIST[idx]);
  	    if (p != NULL)
  	    {
  		if (len > 0)
  		{
  		    /* insert a space in between names */
  		    if (retval != NULL)
  			retval[len] = ' ';
  		    ++len;
  		}
  		for ( ; *p != NUL; ++p)
  		{
  		    if (*p == ' '
  #ifndef BACKSLASH_IN_FILENAME
  			    || *p == '\\'
  #endif
  			    )
  		    {
  			/* insert a backslash */
  			if (retval != NULL)
  			    retval[len] = '\\';
  			++len;
  		    }
  		    if (retval != NULL)
  			retval[len] = *p;
  		    ++len;
  		}
  	    }
  	}
  
  	/* second time: break here */
  	if (retval != NULL)
  	{
  	    retval[len] = NUL;
  	    break;
  	}
  
  	/* allocate memory */
  	retval = alloc((unsigned)len + 1);
  	if (retval == NULL)
  	    break;
      }
  
      return retval;
  }
  
  #if defined(FEAT_AUTOCMD) || defined(PROTO)
  /*
   * Expand the <sfile> string in "arg".
   *
   * Returns an allocated string, or NULL for any error.
   */
      char_u *
  expand_sfile(char_u *arg)
  {
      char_u	*errormsg;
      int		len;
      char_u	*result;
      char_u	*newres;
      char_u	*repl;
      int		srclen;
      char_u	*p;
  
      result = vim_strsave(arg);
      if (result == NULL)
  	return NULL;
  
      for (p = result; *p; )
      {
  	if (STRNCMP(p, "<sfile>", 7) != 0)
  	    ++p;
  	else
  	{
  	    /* replace "<sfile>" with the sourced file name, and do ":" stuff */
  	    repl = eval_vars(p, result, &srclen, NULL, &errormsg, NULL);
  	    if (errormsg != NULL)
  	    {
  		if (*errormsg)
  		    emsg(errormsg);
  		vim_free(result);
  		return NULL;
  	    }
  	    if (repl == NULL)		/* no match (cannot happen) */
  	    {
  		p += srclen;
  		continue;
  	    }
  	    len = (int)STRLEN(result) - srclen + (int)STRLEN(repl) + 1;
  	    newres = alloc(len);
  	    if (newres == NULL)
  	    {
  		vim_free(repl);
  		vim_free(result);
  		return NULL;
  	    }
  	    mch_memmove(newres, result, (size_t)(p - result));
  	    STRCPY(newres + (p - result), repl);
  	    len = (int)STRLEN(newres);
  	    STRCAT(newres, p + srclen);
  	    vim_free(repl);
  	    vim_free(result);
  	    result = newres;
  	    p = newres + len;		/* continue after the match */
  	}
      }
  
      return result;
  }
  #endif
  
  #ifdef FEAT_SESSION
  static int ses_winsizes(FILE *fd, int restore_size,
  							win_T *tab_firstwin);
  static int ses_win_rec(FILE *fd, frame_T *fr);
  static frame_T *ses_skipframe(frame_T *fr);
  static int ses_do_frame(frame_T *fr);
  static int ses_do_win(win_T *wp);
  static int ses_arglist(FILE *fd, char *cmd, garray_T *gap, int fullname, unsigned *flagp);
  static int ses_put_fname(FILE *fd, char_u *name, unsigned *flagp);
  static int ses_fname(FILE *fd, buf_T *buf, unsigned *flagp, int add_eol);
  
  /*
   * Write openfile commands for the current buffers to an .exrc file.
   * Return FAIL on error, OK otherwise.
   */
      static int
  makeopens(
      FILE	*fd,
      char_u	*dirnow)	/* Current directory name */
  {
      buf_T	*buf;
      int		only_save_windows = TRUE;
      int		nr;
      int		restore_size = TRUE;
      win_T	*wp;
      char_u	*sname;
      win_T	*edited_win = NULL;
      int		tabnr;
      int		restore_stal = FALSE;
      win_T	*tab_firstwin;
      frame_T	*tab_topframe;
      int		cur_arg_idx = 0;
      int		next_arg_idx = 0;
  
      if (ssop_flags & SSOP_BUFFERS)
  	only_save_windows = FALSE;		/* Save ALL buffers */
  
      /*
       * Begin by setting the this_session variable, and then other
       * sessionable variables.
       */
  #ifdef FEAT_EVAL
      if (put_line(fd, "let v:this_session=expand(\"<sfile>:p\")") == FAIL)
  	return FAIL;
      if (ssop_flags & SSOP_GLOBALS)
  	if (store_session_globals(fd) == FAIL)
  	    return FAIL;
  #endif
  
      /*
       * Close all windows but one.
       */
      if (put_line(fd, "silent only") == FAIL)
  	return FAIL;
  
      /*
       * Now a :cd command to the session directory or the current directory
       */
      if (ssop_flags & SSOP_SESDIR)
      {
  	if (put_line(fd, "exe \"cd \" . escape(expand(\"<sfile>:p:h\"), ' ')")
  								      == FAIL)
  	    return FAIL;
      }
      else if (ssop_flags & SSOP_CURDIR)
      {
  	sname = home_replace_save(NULL, globaldir != NULL ? globaldir : dirnow);
  	if (sname == NULL
  		|| fputs("cd ", fd) < 0
  		|| ses_put_fname(fd, sname, &ssop_flags) == FAIL
  		|| put_eol(fd) == FAIL)
  	{
  	    vim_free(sname);
  	    return FAIL;
  	}
  	vim_free(sname);
      }
  
      /*
       * If there is an empty, unnamed buffer we will wipe it out later.
       * Remember the buffer number.
       */
      if (put_line(fd, "if expand('%') == '' && !&modified && line('$') <= 1 && getline(1) == ''") == FAIL)
  	return FAIL;
      if (put_line(fd, "  let s:wipebuf = bufnr('%')") == FAIL)
  	return FAIL;
      if (put_line(fd, "endif") == FAIL)
  	return FAIL;
  
      /*
       * Now save the current files, current buffer first.
       */
      if (put_line(fd, "set shortmess=aoO") == FAIL)
  	return FAIL;
  
      /* Now put the other buffers into the buffer list */
      FOR_ALL_BUFFERS(buf)
      {
  	if (!(only_save_windows && buf->b_nwindows == 0)
  		&& !(buf->b_help && !(ssop_flags & SSOP_HELP))
  		&& buf->b_fname != NULL
  		&& buf->b_p_bl)
  	{
  	    if (fprintf(fd, "badd +%ld ", buf->b_wininfo == NULL ? 1L
  					   : buf->b_wininfo->wi_fpos.lnum) < 0
  		    || ses_fname(fd, buf, &ssop_flags, TRUE) == FAIL)
  		return FAIL;
  	}
      }
  
      /* the global argument list */
      if (ses_arglist(fd, "argglobal", &global_alist.al_ga,
  			    !(ssop_flags & SSOP_CURDIR), &ssop_flags) == FAIL)
  	return FAIL;
  
      if (ssop_flags & SSOP_RESIZE)
      {
  	/* Note: after the restore we still check it worked!*/
  	if (fprintf(fd, "set lines=%ld columns=%ld" , Rows, Columns) < 0
  		|| put_eol(fd) == FAIL)
  	    return FAIL;
      }
  
  #ifdef FEAT_GUI
      if (gui.in_use && (ssop_flags & SSOP_WINPOS))
      {
  	int	x, y;
  
  	if (gui_mch_get_winpos(&x, &y) == OK)
  	{
  	    /* Note: after the restore we still check it worked!*/
  	    if (fprintf(fd, "winpos %d %d", x, y) < 0 || put_eol(fd) == FAIL)
  		return FAIL;
  	}
      }
  #endif
  
      /*
       * When there are two or more tabpages and 'showtabline' is 1 the tabline
       * will be displayed when creating the next tab.  That resizes the windows
       * in the first tab, which may cause problems.  Set 'showtabline' to 2
       * temporarily to avoid that.
       */
      if (p_stal == 1 && first_tabpage->tp_next != NULL)
      {
  	if (put_line(fd, "set stal=2") == FAIL)
  	    return FAIL;
  	restore_stal = TRUE;
      }
  
      /*
       * May repeat putting Windows for each tab, when "tabpages" is in
       * 'sessionoptions'.
       * Don't use goto_tabpage(), it may change directory and trigger
       * autocommands.
       */
      tab_firstwin = firstwin;	/* first window in tab page "tabnr" */
      tab_topframe = topframe;
      for (tabnr = 1; ; ++tabnr)
      {
  	int	need_tabnew = FALSE;
  	int	cnr = 1;
  
  	if ((ssop_flags & SSOP_TABPAGES))
  	{
  	    tabpage_T *tp = find_tabpage(tabnr);
  
  	    if (tp == NULL)
  		break;		/* done all tab pages */
  	    if (tp == curtab)
  	    {
  		tab_firstwin = firstwin;
  		tab_topframe = topframe;
  	    }
  	    else
  	    {
  		tab_firstwin = tp->tp_firstwin;
  		tab_topframe = tp->tp_topframe;
  	    }
  	    if (tabnr > 1)
  		need_tabnew = TRUE;
  	}
  
  	/*
  	 * Before creating the window layout, try loading one file.  If this
  	 * is aborted we don't end up with a number of useless windows.
  	 * This may have side effects! (e.g., compressed or network file).
  	 */
  	for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
  	{
  	    if (ses_do_win(wp)
  		    && wp->w_buffer->b_ffname != NULL
  		    && !bt_help(wp->w_buffer)
  #ifdef FEAT_QUICKFIX
  		    && !bt_nofile(wp->w_buffer)
  #endif
  		    )
  	    {
  		if (fputs(need_tabnew ? "tabedit " : "edit ", fd) < 0
  			      || ses_fname(fd, wp->w_buffer, &ssop_flags, TRUE)
  								       == FAIL)
  		    return FAIL;
  		need_tabnew = FALSE;
  		if (!wp->w_arg_idx_invalid)
  		    edited_win = wp;
  		break;
  	    }
  	}
  
  	/* If no file got edited create an empty tab page. */
  	if (need_tabnew && put_line(fd, "tabnew") == FAIL)
  	    return FAIL;
  
  	/*
  	 * Save current window layout.
  	 */
  	if (put_line(fd, "set splitbelow splitright") == FAIL)
  	    return FAIL;
  	if (ses_win_rec(fd, tab_topframe) == FAIL)
  	    return FAIL;
  	if (!p_sb && put_line(fd, "set nosplitbelow") == FAIL)
  	    return FAIL;
  	if (!p_spr && put_line(fd, "set nosplitright") == FAIL)
  	    return FAIL;
  
  	/*
  	 * Check if window sizes can be restored (no windows omitted).
  	 * Remember the window number of the current window after restoring.
  	 */
  	nr = 0;
  	for (wp = tab_firstwin; wp != NULL; wp = W_NEXT(wp))
  	{
  	    if (ses_do_win(wp))
  		++nr;
  	    else
  		restore_size = FALSE;
  	    if (curwin == wp)
  		cnr = nr;
  	}
  
  	/* Go to the first window. */
  	if (put_line(fd, "wincmd t") == FAIL)
  	    return FAIL;
  
  	/*
  	 * If more than one window, see if sizes can be restored.
  	 * First set 'winheight' and 'winwidth' to 1 to avoid the windows being
  	 * resized when moving between windows.
  	 * Do this before restoring the view, so that the topline and the
  	 * cursor can be set.  This is done again below.
  	 * winminheight and winminwidth need to be set to avoid an error if the
  	 * user has set winheight or winwidth.
  	 */
  	if (put_line(fd, "set winminheight=1 winheight=1 winminwidth=1 winwidth=1") == FAIL)
  	    return FAIL;
  	if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
  	    return FAIL;
  
  	/*
  	 * Restore the view of the window (options, file, cursor, etc.).
  	 */
  	for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
  	{
  	    if (!ses_do_win(wp))
  		continue;
  	    if (put_view(fd, wp, wp != edited_win, &ssop_flags,
  							 cur_arg_idx) == FAIL)
  		return FAIL;
  	    if (nr > 1 && put_line(fd, "wincmd w") == FAIL)
  		return FAIL;
  	    next_arg_idx = wp->w_arg_idx;
  	}
  
  	/* The argument index in the first tab page is zero, need to set it in
  	 * each window.  For further tab pages it's the window where we do
  	 * "tabedit". */
  	cur_arg_idx = next_arg_idx;
  
  	/*
  	 * Restore cursor to the current window if it's not the first one.
  	 */
  	if (cnr > 1 && (fprintf(fd, "%dwincmd w", cnr) < 0
  						      || put_eol(fd) == FAIL))
  	    return FAIL;
  
  	/*
  	 * Restore window sizes again after jumping around in windows, because
  	 * the current window has a minimum size while others may not.
  	 */
  	if (nr > 1 && ses_winsizes(fd, restore_size, tab_firstwin) == FAIL)
  	    return FAIL;
  
  	/* Don't continue in another tab page when doing only the current one
  	 * or when at the last tab page. */
  	if (!(ssop_flags & SSOP_TABPAGES))
  	    break;
      }
  
      if (ssop_flags & SSOP_TABPAGES)
      {
  	if (fprintf(fd, "tabnext %d", tabpage_index(curtab)) < 0
  		|| put_eol(fd) == FAIL)
  	    return FAIL;
      }
      if (restore_stal && put_line(fd, "set stal=1") == FAIL)
  	return FAIL;
  
      /*
       * Wipe out an empty unnamed buffer we started in.
       */
      if (put_line(fd, "if exists('s:wipebuf')") == FAIL)
  	return FAIL;
      if (put_line(fd, "  silent exe 'bwipe ' . s:wipebuf") == FAIL)
  	return FAIL;
      if (put_line(fd, "endif") == FAIL)
  	return FAIL;
      if (put_line(fd, "unlet! s:wipebuf") == FAIL)
  	return FAIL;
  
      /* Re-apply 'winheight', 'winwidth' and 'shortmess'. */
      if (fprintf(fd, "set winheight=%ld winwidth=%ld shortmess=%s",
  			       p_wh, p_wiw, p_shm) < 0 || put_eol(fd) == FAIL)
  	return FAIL;
      /* Re-apply 'winminheight' and 'winminwidth'. */
      if (fprintf(fd, "set winminheight=%ld winminwidth=%ld",
  				      p_wmh, p_wmw) < 0 || put_eol(fd) == FAIL)
  	return FAIL;
  
      /*
       * Lastly, execute the x.vim file if it exists.
       */
      if (put_line(fd, "let s:sx = expand(\"<sfile>:p:r\").\"x.vim\"") == FAIL
  	    || put_line(fd, "if file_readable(s:sx)") == FAIL
  	    || put_line(fd, "  exe \"source \" . fnameescape(s:sx)") == FAIL
  	    || put_line(fd, "endif") == FAIL)
  	return FAIL;
  
      return OK;
  }
  
      static int
  ses_winsizes(
      FILE	*fd,
      int		restore_size,
      win_T	*tab_firstwin)
  {
      int		n = 0;
      win_T	*wp;
  
      if (restore_size && (ssop_flags & SSOP_WINSIZE))
      {
  	for (wp = tab_firstwin; wp != NULL; wp = wp->w_next)
  	{
  	    if (!ses_do_win(wp))
  		continue;
  	    ++n;
  
  	    /* restore height when not full height */
  	    if (wp->w_height + wp->w_status_height < topframe->fr_height
  		    && (fprintf(fd,
  			  "exe '%dresize ' . ((&lines * %ld + %ld) / %ld)",
  			    n, (long)wp->w_height, Rows / 2, Rows) < 0
  						  || put_eol(fd) == FAIL))
  		return FAIL;
  
  	    /* restore width when not full width */
  	    if (wp->w_width < Columns && (fprintf(fd,
  		   "exe 'vert %dresize ' . ((&columns * %ld + %ld) / %ld)",
  			    n, (long)wp->w_width, Columns / 2, Columns) < 0
  						  || put_eol(fd) == FAIL))
  		return FAIL;
  	}
      }
      else
      {
  	/* Just equalise window sizes */
  	if (put_line(fd, "wincmd =") == FAIL)
  	    return FAIL;
      }
      return OK;
  }
  
  /*
   * Write commands to "fd" to recursively create windows for frame "fr",
   * horizontally and vertically split.
   * After the commands the last window in the frame is the current window.
   * Returns FAIL when writing the commands to "fd" fails.
   */
      static int
  ses_win_rec(FILE *fd, frame_T *fr)
  {
      frame_T	*frc;
      int		count = 0;
  
      if (fr->fr_layout != FR_LEAF)
      {
  	/* Find first frame that's not skipped and then create a window for
  	 * each following one (first frame is already there). */
  	frc = ses_skipframe(fr->fr_child);
  	if (frc != NULL)
  	    while ((frc = ses_skipframe(frc->fr_next)) != NULL)
  	    {
  		/* Make window as big as possible so that we have lots of room
  		 * to split. */
  		if (put_line(fd, "wincmd _ | wincmd |") == FAIL
  			|| put_line(fd, fr->fr_layout == FR_COL
  						? "split" : "vsplit") == FAIL)
  		    return FAIL;
  		++count;
  	    }
  
  	/* Go back to the first window. */
  	if (count > 0 && (fprintf(fd, fr->fr_layout == FR_COL
  			? "%dwincmd k" : "%dwincmd h", count) < 0
  						      || put_eol(fd) == FAIL))
  	    return FAIL;
  
  	/* Recursively create frames/windows in each window of this column or
  	 * row. */
  	frc = ses_skipframe(fr->fr_child);
  	while (frc != NULL)
  	{
  	    ses_win_rec(fd, frc);
  	    frc = ses_skipframe(frc->fr_next);
  	    /* Go to next window. */
  	    if (frc != NULL && put_line(fd, "wincmd w") == FAIL)
  		return FAIL;
  	}
      }
      return OK;
  }
  
  /*
   * Skip frames that don't contain windows we want to save in the Session.
   * Returns NULL when there none.
   */
      static frame_T *
  ses_skipframe(frame_T *fr)
  {
      frame_T	*frc;
  
      for (frc = fr; frc != NULL; frc = frc->fr_next)
  	if (ses_do_frame(frc))
  	    break;
      return frc;
  }
  
  /*
   * Return TRUE if frame "fr" has a window somewhere that we want to save in
   * the Session.
   */
      static int
  ses_do_frame(frame_T *fr)
  {
      frame_T	*frc;
  
      if (fr->fr_layout == FR_LEAF)
  	return ses_do_win(fr->fr_win);
      for (frc = fr->fr_child; frc != NULL; frc = frc->fr_next)
  	if (ses_do_frame(frc))
  	    return TRUE;
      return FALSE;
  }
  
  /*
   * Return non-zero if window "wp" is to be stored in the Session.
   */
      static int
  ses_do_win(win_T *wp)
  {
      if (wp->w_buffer->b_fname == NULL
  #ifdef FEAT_QUICKFIX
  	    /* When 'buftype' is "nofile" can't restore the window contents. */
  	    || bt_nofile(wp->w_buffer)
  #endif
         )
  	return (ssop_flags & SSOP_BLANK);
      if (bt_help(wp->w_buffer))
  	return (ssop_flags & SSOP_HELP);
      return TRUE;
  }
  
  /*
   * Write commands to "fd" to restore the view of a window.
   * Caller must make sure 'scrolloff' is zero.
   */
      static int
  put_view(
      FILE	*fd,
      win_T	*wp,
      int		add_edit,	/* add ":edit" command to view */
      unsigned	*flagp,		/* vop_flags or ssop_flags */
      int		current_arg_idx) /* current argument index of the window, use
  				  * -1 if unknown */
  {
      win_T	*save_curwin;
      int		f;
      int		do_cursor;
      int		did_next = FALSE;
  
      /* Always restore cursor position for ":mksession".  For ":mkview" only
       * when 'viewoptions' contains "cursor". */
      do_cursor = (flagp == &ssop_flags || *flagp & SSOP_CURSOR);
  
      /*
       * Local argument list.
       */
      if (wp->w_alist == &global_alist)
      {
  	if (put_line(fd, "argglobal") == FAIL)
  	    return FAIL;
      }
      else
      {
  	if (ses_arglist(fd, "arglocal", &wp->w_alist->al_ga,
  			flagp == &vop_flags
  			|| !(*flagp & SSOP_CURDIR)
  			|| wp->w_localdir != NULL, flagp) == FAIL)
  	    return FAIL;
      }
  
      /* Only when part of a session: restore the argument index.  Some
       * arguments may have been deleted, check if the index is valid. */
      if (wp->w_arg_idx != current_arg_idx && wp->w_arg_idx < WARGCOUNT(wp)
  						      && flagp == &ssop_flags)
      {
  	if (fprintf(fd, "%ldargu", (long)wp->w_arg_idx + 1) < 0
  		|| put_eol(fd) == FAIL)
  	    return FAIL;
  	did_next = TRUE;
      }
  
      /* Edit the file.  Skip this when ":next" already did it. */
      if (add_edit && (!did_next || wp->w_arg_idx_invalid))
      {
  	/*
  	 * Load the file.
  	 */
  	if (wp->w_buffer->b_ffname != NULL
  #ifdef FEAT_QUICKFIX
  		&& !bt_nofile(wp->w_buffer)
  #endif
  		)
  	{
  	    /*
  	     * Editing a file in this buffer: use ":edit file".
  	     * This may have side effects! (e.g., compressed or network file).
  	     *
  	     * Note, if a buffer for that file already exists, use :badd to
  	     * edit that buffer, to not lose folding information (:edit resets
  	     * folds in other buffers)
  	     */
  	    if (fputs("if bufexists('", fd) < 0
  		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
  		    || fputs("') | buffer ", fd) < 0
  		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
  		    || fputs(" | else | edit ", fd) < 0
  		    || ses_fname(fd, wp->w_buffer, flagp, FALSE) == FAIL
  		    || fputs(" | endif", fd) < 0
  		    ||
  		put_eol(fd) == FAIL)
  		return FAIL;
  	}
  	else
  	{
  	    /* No file in this buffer, just make it empty. */
  	    if (put_line(fd, "enew") == FAIL)
  		return FAIL;
  #ifdef FEAT_QUICKFIX
  	    if (wp->w_buffer->b_ffname != NULL)
  	    {
  		/* The buffer does have a name, but it's not a file name. */
  		if (fputs("file ", fd) < 0
  			|| ses_fname(fd, wp->w_buffer, flagp, TRUE) == FAIL)
  		    return FAIL;
  	    }
  #endif
  	    do_cursor = FALSE;
  	}
      }
  
      /*
       * Local mappings and abbreviations.
       */
      if ((*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
  					 && makemap(fd, wp->w_buffer) == FAIL)
  	return FAIL;
  
      /*
       * Local options.  Need to go to the window temporarily.
       * Store only local values when using ":mkview" and when ":mksession" is
       * used and 'sessionoptions' doesn't include "options".
       * Some folding options are always stored when "folds" is included,
       * otherwise the folds would not be restored correctly.
       */
      save_curwin = curwin;
      curwin = wp;
      curbuf = curwin->w_buffer;
      if (*flagp & (SSOP_OPTIONS | SSOP_LOCALOPTIONS))
  	f = makeset(fd, OPT_LOCAL,
  			     flagp == &vop_flags || !(*flagp & SSOP_OPTIONS));
  #ifdef FEAT_FOLDING
      else if (*flagp & SSOP_FOLDS)
  	f = makefoldset(fd);
  #endif
      else
  	f = OK;
      curwin = save_curwin;
      curbuf = curwin->w_buffer;
      if (f == FAIL)
  	return FAIL;
  
  #ifdef FEAT_FOLDING
      /*
       * Save Folds when 'buftype' is empty and for help files.
       */
      if ((*flagp & SSOP_FOLDS)
  	    && wp->w_buffer->b_ffname != NULL
  	    && (*wp->w_buffer->b_p_bt == NUL || bt_help(wp->w_buffer)))
      {
  	if (put_folds(fd, wp) == FAIL)
  	    return FAIL;
      }
  #endif
  
      /*
       * Set the cursor after creating folds, since that moves the cursor.
       */
      if (do_cursor)
      {
  
  	/* Restore the cursor line in the file and relatively in the
  	 * window.  Don't use "G", it changes the jumplist. */
  	if (fprintf(fd, "let s:l = %ld - ((%ld * winheight(0) + %ld) / %ld)",
  		    (long)wp->w_cursor.lnum,
  		    (long)(wp->w_cursor.lnum - wp->w_topline),
  		    (long)wp->w_height / 2, (long)wp->w_height) < 0
  		|| put_eol(fd) == FAIL
  		|| put_line(fd, "if s:l < 1 | let s:l = 1 | endif") == FAIL
  		|| put_line(fd, "exe s:l") == FAIL
  		|| put_line(fd, "normal! zt") == FAIL
  		|| fprintf(fd, "%ld", (long)wp->w_cursor.lnum) < 0
  		|| put_eol(fd) == FAIL)
  	    return FAIL;
  	/* Restore the cursor column and left offset when not wrapping. */
  	if (wp->w_cursor.col == 0)
  	{
  	    if (put_line(fd, "normal! 0") == FAIL)
  		return FAIL;
  	}
  	else
  	{
  	    if (!wp->w_p_wrap && wp->w_leftcol > 0 && wp->w_width > 0)
  	    {
  		if (fprintf(fd,
  			  "let s:c = %ld - ((%ld * winwidth(0) + %ld) / %ld)",
  			    (long)wp->w_virtcol + 1,
  			    (long)(wp->w_virtcol - wp->w_leftcol),
  			    (long)wp->w_width / 2, (long)wp->w_width) < 0
  			|| put_eol(fd) == FAIL
  			|| put_line(fd, "if s:c > 0") == FAIL
  			|| fprintf(fd,
  			    "  exe 'normal! ' . s:c . '|zs' . %ld . '|'",
  			    (long)wp->w_virtcol + 1) < 0
  			|| put_eol(fd) == FAIL
  			|| put_line(fd, "else") == FAIL
  			|| fprintf(fd, "  normal! 0%d|", wp->w_virtcol + 1) < 0
  			|| put_eol(fd) == FAIL
  			|| put_line(fd, "endif") == FAIL)
  		    return FAIL;
  	    }
  	    else
  	    {
  		if (fprintf(fd, "normal! 0%d|", wp->w_virtcol + 1) < 0
  			|| put_eol(fd) == FAIL)
  		    return FAIL;
  	    }
  	}
      }
  
      /*
       * Local directory, if the current flag is not view options or the "curdir"
       * option is included.
       */
      if (wp->w_localdir != NULL
  			    && (flagp != &vop_flags || (*flagp & SSOP_CURDIR)))
      {
  	if (fputs("lcd ", fd) < 0
  		|| ses_put_fname(fd, wp->w_localdir, flagp) == FAIL
  		|| put_eol(fd) == FAIL)
  	    return FAIL;
  	did_lcd = TRUE;
      }
  
      return OK;
  }
  
  /*
   * Write an argument list to the session file.
   * Returns FAIL if writing fails.
   */
      static int
  ses_arglist(
      FILE	*fd,
      char	*cmd,
      garray_T	*gap,
      int		fullname,	/* TRUE: use full path name */
      unsigned	*flagp)
  {
      int		i;
      char_u	*buf = NULL;
      char_u	*s;
  
      if (fputs(cmd, fd) < 0 || put_eol(fd) == FAIL)
  	return FAIL;
      if (put_line(fd, "silent! argdel *") == FAIL)
  	return FAIL;
      for (i = 0; i < gap->ga_len; ++i)
      {
  	/* NULL file names are skipped (only happens when out of memory). */
  	s = alist_name(&((aentry_T *)gap->ga_data)[i]);
  	if (s != NULL)
  	{
  	    if (fullname)
  	    {
  		buf = alloc(MAXPATHL);
  		if (buf != NULL)
  		{
  		    (void)vim_FullName(s, buf, MAXPATHL, FALSE);
  		    s = buf;
  		}
  	    }
  	    if (fputs("$argadd ", fd) < 0
  		    || ses_put_fname(fd, s, flagp) == FAIL
  		    || put_eol(fd) == FAIL)
  	    {
  		vim_free(buf);
  		return FAIL;
  	    }
  	    vim_free(buf);
  	}
      }
      return OK;
  }
  
  /*
   * Write a buffer name to the session file.
   * Also ends the line, if "add_eol" is TRUE.
   * Returns FAIL if writing fails.
   */
      static int
  ses_fname(FILE *fd, buf_T *buf, unsigned *flagp, int add_eol)
  {
      char_u	*name;
  
      /* Use the short file name if the current directory is known at the time
       * the session file will be sourced.
       * Don't do this for ":mkview", we don't know the current directory.
       * Don't do this after ":lcd", we don't keep track of what the current
       * directory is. */
      if (buf->b_sfname != NULL
  	    && flagp == &ssop_flags
  	    && (ssop_flags & (SSOP_CURDIR | SSOP_SESDIR))
  #ifdef FEAT_AUTOCHDIR
  	    && !p_acd
  #endif
  	    && !did_lcd)
  	name = buf->b_sfname;
      else
  	name = buf->b_ffname;
      if (ses_put_fname(fd, name, flagp) == FAIL
  	    || (add_eol && put_eol(fd) == FAIL))
  	return FAIL;
      return OK;
  }
  
  /*
   * Write a file name to the session file.
   * Takes care of the "slash" option in 'sessionoptions' and escapes special
   * characters.
   * Returns FAIL if writing fails or out of memory.
   */
      static int
  ses_put_fname(FILE *fd, char_u *name, unsigned *flagp)
  {
      char_u	*sname;
      char_u	*p;
      int		retval = OK;
  
      sname = home_replace_save(NULL, name);
      if (sname == NULL)
  	return FAIL;
  
      if (*flagp & SSOP_SLASH)
      {
  	/* change all backslashes to forward slashes */
  	for (p = sname; *p != NUL; MB_PTR_ADV(p))
  	    if (*p == '\\')
  		*p = '/';
      }
  
      /* escape special characters */
      p = vim_strsave_fnameescape(sname, FALSE);
      vim_free(sname);
      if (p == NULL)
  	return FAIL;
  
      /* write the result */
      if (fputs((char *)p, fd) < 0)
  	retval = FAIL;
  
      vim_free(p);
      return retval;
  }
  
  /*
   * ":loadview [nr]"
   */
      static void
  ex_loadview(exarg_T *eap)
  {
      char_u	*fname;
  
      fname = get_view_file(*eap->arg);
      if (fname != NULL)
      {
  	do_source(fname, FALSE, DOSO_NONE);
  	vim_free(fname);
      }
  }
  
  /*
   * Get the name of the view file for the current buffer.
   */
      static char_u *
  get_view_file(int c)
  {
      int		len = 0;
      char_u	*p, *s;
      char_u	*retval;
      char_u	*sname;
  
      if (curbuf->b_ffname == NULL)
      {
  	EMSG(_(e_noname));
  	return NULL;
      }
      sname = home_replace_save(NULL, curbuf->b_ffname);
      if (sname == NULL)
  	return NULL;
  
      /*
       * We want a file name without separators, because we're not going to make
       * a directory.
       * "normal" path separator	-> "=+"
       * "="			-> "=="
       * ":" path separator	-> "=-"
       */
      for (p = sname; *p; ++p)
  	if (*p == '=' || vim_ispathsep(*p))
  	    ++len;
      retval = alloc((unsigned)(STRLEN(sname) + len + STRLEN(p_vdir) + 9));
      if (retval != NULL)
      {
  	STRCPY(retval, p_vdir);
  	add_pathsep(retval);
  	s = retval + STRLEN(retval);
  	for (p = sname; *p; ++p)
  	{
  	    if (*p == '=')
  	    {
  		*s++ = '=';
  		*s++ = '=';
  	    }
  	    else if (vim_ispathsep(*p))
  	    {
  		*s++ = '=';
  #if defined(BACKSLASH_IN_FILENAME) || defined(AMIGA) || defined(VMS)
  		if (*p == ':')
  		    *s++ = '-';
  		else
  #endif
  		    *s++ = '+';
  	    }
  	    else
  		*s++ = *p;
  	}
  	*s++ = '=';
  	*s++ = c;
  	STRCPY(s, ".vim");
      }
  
      vim_free(sname);
      return retval;
  }
  
  #endif /* FEAT_SESSION */
  
  /*
   * Write end-of-line character(s) for ":mkexrc", ":mkvimrc" and ":mksession".
   * Return FAIL for a write error.
   */
      int
  put_eol(FILE *fd)
  {
      if (
  #ifdef USE_CRNL
  	    (
  # ifdef MKSESSION_NL
  	     !mksession_nl &&
  # endif
  	     (putc('\r', fd) < 0)) ||
  #endif
  	    (putc('\n', fd) < 0))
  	return FAIL;
      return OK;
  }
  
  /*
   * Write a line to "fd".
   * Return FAIL for a write error.
   */
      int
  put_line(FILE *fd, char *s)
  {
      if (fputs(s, fd) < 0 || put_eol(fd) == FAIL)
  	return FAIL;
      return OK;
  }
  
  #ifdef FEAT_VIMINFO
  /*
   * ":rviminfo" and ":wviminfo".
   */
      static void
  ex_viminfo(
      exarg_T	*eap)
  {
      char_u	*save_viminfo;
  
      save_viminfo = p_viminfo;
      if (*p_viminfo == NUL)
  	p_viminfo = (char_u *)"'100";
      if (eap->cmdidx == CMD_rviminfo)
      {
  	if (read_viminfo(eap->arg, VIF_WANT_INFO | VIF_WANT_MARKS
  				  | (eap->forceit ? VIF_FORCEIT : 0)) == FAIL)
  	    EMSG(_("E195: Cannot open viminfo file for reading"));
      }
      else
  	write_viminfo(eap->arg, eap->forceit);
      p_viminfo = save_viminfo;
  }
  #endif
  
  #if defined(FEAT_GUI_DIALOG) || defined(FEAT_CON_DIALOG) || defined(PROTO)
  /*
   * Make a dialog message in "buff[DIALOG_MSG_SIZE]".
   * "format" must contain "%s".
   */
      void
  dialog_msg(char_u *buff, char *format, char_u *fname)
  {
      if (fname == NULL)
  	fname = (char_u *)_("Untitled");
      vim_snprintf((char *)buff, DIALOG_MSG_SIZE, format, fname);
  }
  #endif
  
  /*
   * ":behave {mswin,xterm}"
   */
      static void
  ex_behave(exarg_T *eap)
  {
      if (STRCMP(eap->arg, "mswin") == 0)
      {
  	set_option_value((char_u *)"selection", 0L, (char_u *)"exclusive", 0);
  	set_option_value((char_u *)"selectmode", 0L, (char_u *)"mouse,key", 0);
  	set_option_value((char_u *)"mousemodel", 0L, (char_u *)"popup", 0);
  	set_option_value((char_u *)"keymodel", 0L,
  					     (char_u *)"startsel,stopsel", 0);
      }
      else if (STRCMP(eap->arg, "xterm") == 0)
      {
  	set_option_value((char_u *)"selection", 0L, (char_u *)"inclusive", 0);
  	set_option_value((char_u *)"selectmode", 0L, (char_u *)"", 0);
  	set_option_value((char_u *)"mousemodel", 0L, (char_u *)"extend", 0);
  	set_option_value((char_u *)"keymodel", 0L, (char_u *)"", 0);
      }
      else
  	EMSG2(_(e_invarg2), eap->arg);
  }
  
  #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
  /*
   * Function given to ExpandGeneric() to obtain the possible arguments of the
   * ":behave {mswin,xterm}" command.
   */
      char_u *
  get_behave_arg(expand_T *xp UNUSED, int idx)
  {
      if (idx == 0)
  	return (char_u *)"mswin";
      if (idx == 1)
  	return (char_u *)"xterm";
      return NULL;
  }
  
  /*
   * Function given to ExpandGeneric() to obtain the possible arguments of the
   * ":messages {clear}" command.
   */
      char_u *
  get_messages_arg(expand_T *xp UNUSED, int idx)
  {
      if (idx == 0)
  	return (char_u *)"clear";
      return NULL;
  }
  #endif
  
      char_u *
  get_mapclear_arg(expand_T *xp UNUSED, int idx)
  {
      if (idx == 0)
  	return (char_u *)"<buffer>";
      return NULL;
  }
  
  #ifdef FEAT_AUTOCMD
  static int filetype_detect = FALSE;
  static int filetype_plugin = FALSE;
  static int filetype_indent = FALSE;
  
  /*
   * ":filetype [plugin] [indent] {on,off,detect}"
   * on: Load the filetype.vim file to install autocommands for file types.
   * off: Load the ftoff.vim file to remove all autocommands for file types.
   * plugin on: load filetype.vim and ftplugin.vim
   * plugin off: load ftplugof.vim
   * indent on: load filetype.vim and indent.vim
   * indent off: load indoff.vim
   */
      static void
  ex_filetype(exarg_T *eap)
  {
      char_u	*arg = eap->arg;
      int		plugin = FALSE;
      int		indent = FALSE;
  
      if (*eap->arg == NUL)
      {
  	/* Print current status. */
  	smsg((char_u *)"filetype detection:%s  plugin:%s  indent:%s",
  		filetype_detect ? "ON" : "OFF",
  		filetype_plugin ? (filetype_detect ? "ON" : "(on)") : "OFF",
  		filetype_indent ? (filetype_detect ? "ON" : "(on)") : "OFF");
  	return;
      }
  
      /* Accept "plugin" and "indent" in any order. */
      for (;;)
      {
  	if (STRNCMP(arg, "plugin", 6) == 0)
  	{
  	    plugin = TRUE;
  	    arg = skipwhite(arg + 6);
  	    continue;
  	}
  	if (STRNCMP(arg, "indent", 6) == 0)
  	{
  	    indent = TRUE;
  	    arg = skipwhite(arg + 6);
  	    continue;
  	}
  	break;
      }
      if (STRCMP(arg, "on") == 0 || STRCMP(arg, "detect") == 0)
      {
  	if (*arg == 'o' || !filetype_detect)
  	{
  	    source_runtime((char_u *)FILETYPE_FILE, DIP_ALL);
  	    filetype_detect = TRUE;
  	    if (plugin)
  	    {
  		source_runtime((char_u *)FTPLUGIN_FILE, DIP_ALL);
  		filetype_plugin = TRUE;
  	    }
  	    if (indent)
  	    {
  		source_runtime((char_u *)INDENT_FILE, DIP_ALL);
  		filetype_indent = TRUE;
  	    }
  	}
  	if (*arg == 'd')
  	{
  	    (void)do_doautocmd((char_u *)"filetypedetect BufRead", TRUE, NULL);
  	    do_modelines(0);
  	}
      }
      else if (STRCMP(arg, "off") == 0)
      {
  	if (plugin || indent)
  	{
  	    if (plugin)
  	    {
  		source_runtime((char_u *)FTPLUGOF_FILE, DIP_ALL);
  		filetype_plugin = FALSE;
  	    }
  	    if (indent)
  	    {
  		source_runtime((char_u *)INDOFF_FILE, DIP_ALL);
  		filetype_indent = FALSE;
  	    }
  	}
  	else
  	{
  	    source_runtime((char_u *)FTOFF_FILE, DIP_ALL);
  	    filetype_detect = FALSE;
  	}
      }
      else
  	EMSG2(_(e_invarg2), arg);
  }
  
  /*
   * ":setfiletype [FALLBACK] {name}"
   */
      static void
  ex_setfiletype(exarg_T *eap)
  {
      if (!did_filetype)
      {
  	char_u *arg = eap->arg;
  
  	if (STRNCMP(arg, "FALLBACK ", 9) == 0)
  	    arg += 9;
  
  	set_option_value((char_u *)"filetype", 0L, arg, OPT_LOCAL);
  	if (arg != eap->arg)
  	    did_filetype = FALSE;
      }
  }
  #endif
  
      static void
  ex_digraphs(exarg_T *eap UNUSED)
  {
  #ifdef FEAT_DIGRAPHS
      if (*eap->arg != NUL)
  	putdigraph(eap->arg);
      else
  	listdigraphs();
  #else
      EMSG(_("E196: No digraphs in this version"));
  #endif
  }
  
      static void
  ex_set(exarg_T *eap)
  {
      int		flags = 0;
  
      if (eap->cmdidx == CMD_setlocal)
  	flags = OPT_LOCAL;
      else if (eap->cmdidx == CMD_setglobal)
  	flags = OPT_GLOBAL;
  #if defined(FEAT_EVAL) && defined(FEAT_AUTOCMD) && defined(FEAT_BROWSE)
      if (cmdmod.browse && flags == 0)
  	ex_options(eap);
      else
  #endif
  	(void)do_set(eap->arg, flags);
  }
  
  #ifdef FEAT_SEARCH_EXTRA
  /*
   * ":nohlsearch"
   */
      static void
  ex_nohlsearch(exarg_T *eap UNUSED)
  {
      SET_NO_HLSEARCH(TRUE);
      redraw_all_later(SOME_VALID);
  }
  
  /*
   * ":[N]match {group} {pattern}"
   * Sets nextcmd to the start of the next command, if any.  Also called when
   * skipping commands to find the next command.
   */
      static void
  ex_match(exarg_T *eap)
  {
      char_u	*p;
      char_u	*g = NULL;
      char_u	*end;
      int		c;
      int		id;
  
      if (eap->line2 <= 3)
  	id = eap->line2;
      else
      {
  	EMSG(e_invcmd);
  	return;
      }
  
      /* First clear any old pattern. */
      if (!eap->skip)
  	match_delete(curwin, id, FALSE);
  
      if (ends_excmd(*eap->arg))
  	end = eap->arg;
      else if ((STRNICMP(eap->arg, "none", 4) == 0
  		&& (VIM_ISWHITE(eap->arg[4]) || ends_excmd(eap->arg[4]))))
  	end = eap->arg + 4;
      else
      {
  	p = skiptowhite(eap->arg);
  	if (!eap->skip)
  	    g = vim_strnsave(eap->arg, (int)(p - eap->arg));
  	p = skipwhite(p);
  	if (*p == NUL)
  	{
  	    /* There must be two arguments. */
  	    vim_free(g);
  	    EMSG2(_(e_invarg2), eap->arg);
  	    return;
  	}
  	end = skip_regexp(p + 1, *p, TRUE, NULL);
  	if (!eap->skip)
  	{
  	    if (*end != NUL && !ends_excmd(*skipwhite(end + 1)))
  	    {
  		vim_free(g);
  		eap->errmsg = e_trailing;
  		return;
  	    }
  	    if (*end != *p)
  	    {
  		vim_free(g);
  		EMSG2(_(e_invarg2), p);
  		return;
  	    }
  
  	    c = *end;
  	    *end = NUL;
  	    match_add(curwin, g, p + 1, 10, id, NULL, NULL);
  	    vim_free(g);
  	    *end = c;
  	}
      }
      eap->nextcmd = find_nextcmd(end);
  }
  #endif
  
  #ifdef FEAT_CRYPT
  /*
   * ":X": Get crypt key
   */
      static void
  ex_X(exarg_T *eap UNUSED)
  {
      crypt_check_current_method();
      (void)crypt_get_key(TRUE, TRUE);
  }
  #endif
  
  #ifdef FEAT_FOLDING
      static void
  ex_fold(exarg_T *eap)
  {
      if (foldManualAllowed(TRUE))
  	foldCreate(eap->line1, eap->line2);
  }
  
      static void
  ex_foldopen(exarg_T *eap)
  {
      opFoldRange(eap->line1, eap->line2, eap->cmdidx == CMD_foldopen,
  							 eap->forceit, FALSE);
  }
  
      static void
  ex_folddo(exarg_T *eap)
  {
      linenr_T	lnum;
  
  #ifdef FEAT_CLIPBOARD
      start_global_changes();
  #endif
  
      /* First set the marks for all lines closed/open. */
      for (lnum = eap->line1; lnum <= eap->line2; ++lnum)
  	if (hasFolding(lnum, NULL, NULL) == (eap->cmdidx == CMD_folddoclosed))
  	    ml_setmarked(lnum);
  
      /* Execute the command on the marked lines. */
      global_exe(eap->arg);
      ml_clearmarked();	   /* clear rest of the marks */
  #ifdef FEAT_CLIPBOARD
      end_global_changes();
  #endif
  }
  #endif
  
  # if defined(FEAT_TIMERS) || defined(PROTO)
      int
  get_pressedreturn(void)
  {
      return ex_pressedreturn;
  }
  
      void
  set_pressedreturn(int val)
  {
       ex_pressedreturn = val;
  }
  #endif
  