text: /* vi:set ts=8 sts=4 sw=4:
   *
   * 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_getln.c: Functions for entering and editing an Ex command line.
   */
  
  #include "vim.h"
  
  /*
   * Variables shared between getcmdline(), redrawcmdline() and others.
   * These need to be saved when using CTRL-R |, that's why they are in a
   * structure.
   */
  struct cmdline_info
  {
      char_u	*cmdbuff;	/* pointer to command line buffer */
      int		cmdbufflen;	/* length of cmdbuff */
      int		cmdlen;		/* number of chars in command line */
      int		cmdpos;		/* current cursor position */
      int		cmdspos;	/* cursor column on screen */
      int		cmdfirstc;	/* ':', '/', '?', '=' or NUL */
      int		cmdindent;	/* number of spaces before cmdline */
      char_u	*cmdprompt;	/* message in front of cmdline */
      int		cmdattr;	/* attributes for prompt */
      int		overstrike;	/* Typing mode on the command line.  Shared by
  				   getcmdline() and put_on_cmdline(). */
      int		xp_context;	/* type of expansion */
  # ifdef FEAT_EVAL
      char_u	*xp_arg;	/* user-defined expansion arg */
      int		input_fn;	/* when TRUE Invoked for input() function */
  # endif
  };
  
  static struct cmdline_info ccline;	/* current cmdline_info */
  
  static int	cmd_showtail;		/* Only show path tail in lists ? */
  
  #ifdef FEAT_EVAL
  static int	new_cmdpos;	/* position set by set_cmdline_pos() */
  #endif
  
  #ifdef FEAT_CMDHIST
  typedef struct hist_entry
  {
      int		hisnum;		/* identifying number */
      char_u	*hisstr;	/* actual entry, separator char after the NUL */
  } histentry_T;
  
  static histentry_T *(history[HIST_COUNT]) = {NULL, NULL, NULL, NULL, NULL};
  static int	hisidx[HIST_COUNT] = {-1, -1, -1, -1, -1};  /* lastused entry */
  static int	hisnum[HIST_COUNT] = {0, 0, 0, 0, 0};
  		    /* identifying (unique) number of newest history entry */
  static int	hislen = 0;		/* actual length of history tables */
  
  static int	hist_char2type __ARGS((int c));
  
  static int	in_history __ARGS((int, char_u *, int));
  # ifdef FEAT_EVAL
  static int	calc_hist_idx __ARGS((int histype, int num));
  # endif
  #endif
  
  #ifdef FEAT_RIGHTLEFT
  static int	cmd_hkmap = 0;	/* Hebrew mapping during command line */
  #endif
  
  #ifdef FEAT_FKMAP
  static int	cmd_fkmap = 0;	/* Farsi mapping during command line */
  #endif
  
  static int	cmdline_charsize __ARGS((int idx));
  static void	set_cmdspos __ARGS((void));
  static void	set_cmdspos_cursor __ARGS((void));
  #ifdef FEAT_MBYTE
  static void	correct_cmdspos __ARGS((int idx, int cells));
  #endif
  static void	alloc_cmdbuff __ARGS((int len));
  static int	realloc_cmdbuff __ARGS((int len));
  static void	draw_cmdline __ARGS((int start, int len));
  static void	save_cmdline __ARGS((struct cmdline_info *ccp));
  static void	restore_cmdline __ARGS((struct cmdline_info *ccp));
  static int	cmdline_paste __ARGS((int regname, int literally, int remcr));
  #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
  static void	redrawcmd_preedit __ARGS((void));
  #endif
  #ifdef FEAT_WILDMENU
  static void	cmdline_del __ARGS((int from));
  #endif
  static void	redrawcmdprompt __ARGS((void));
  static void	cursorcmd __ARGS((void));
  static int	ccheck_abbr __ARGS((int));
  static int	nextwild __ARGS((expand_T *xp, int type, int options));
  static void	escape_fname __ARGS((char_u **pp));
  static int	showmatches __ARGS((expand_T *xp, int wildmenu));
  static void	set_expand_context __ARGS((expand_T *xp));
  static int	ExpandFromContext __ARGS((expand_T *xp, char_u *, int *, char_u ***, int));
  static int	expand_showtail __ARGS((expand_T *xp));
  #ifdef FEAT_CMDL_COMPL
  static int	expand_shellcmd __ARGS((char_u *filepat, int *num_file, char_u ***file, int flagsarg));
  static int	ExpandRTDir __ARGS((char_u *pat, int *num_file, char_u ***file, char *dirname));
  # if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL)
  static int	ExpandUserDefined __ARGS((expand_T *xp, regmatch_T *regmatch, int *num_file, char_u ***file));
  static int	ExpandUserList __ARGS((expand_T *xp, int *num_file, char_u ***file));
  # endif
  #endif
  
  #ifdef FEAT_CMDWIN
  static int	ex_window __ARGS((void));
  #endif
  
  /*
   * getcmdline() - accept a command line starting with firstc.
   *
   * firstc == ':'	    get ":" command line.
   * firstc == '/' or '?'	    get search pattern
   * firstc == '='	    get expression
   * firstc == '@'	    get text for input() function
   * firstc == '>'	    get text for debug mode
   * firstc == NUL	    get text for :insert command
   * firstc == -1		    like NUL, and break on CTRL-C
   *
   * The line is collected in ccline.cmdbuff, which is reallocated to fit the
   * command line.
   *
   * Careful: getcmdline() can be called recursively!
   *
   * Return pointer to allocated string if there is a commandline, NULL
   * otherwise.
   */
  /*ARGSUSED*/
      char_u *
  getcmdline(firstc, count, indent)
      int		firstc;
      long	count;		/* only used for incremental search */
      int		indent;		/* indent for inside conditionals */
  {
      int		c;
      int		i;
      int		j;
      int		gotesc = FALSE;		/* TRUE when <ESC> just typed */
      int		do_abbr;		/* when TRUE check for abbr. */
  #ifdef FEAT_CMDHIST
      char_u	*lookfor = NULL;	/* string to match */
      int		hiscnt;			/* current history line in use */
      int		histype;		/* history type to be used */
  #endif
  #ifdef FEAT_SEARCH_EXTRA
      pos_T	old_cursor;
      colnr_T	old_curswant;
      colnr_T	old_leftcol;
      linenr_T	old_topline;
  # ifdef FEAT_DIFF
      int		old_topfill;
  # endif
      linenr_T	old_botline;
      int		did_incsearch = FALSE;
      int		incsearch_postponed = FALSE;
  #endif
      int		did_wild_list = FALSE;	/* did wild_list() recently */
      int		wim_index = 0;		/* index in wim_flags[] */
      int		res;
      int		save_msg_scroll = msg_scroll;
      int		save_State = State;	/* remember State when called */
      int		some_key_typed = FALSE;	/* one of the keys was typed */
  #ifdef FEAT_MOUSE
      /* mouse drag and release events are ignored, unless they are
       * preceded with a mouse down event */
      int		ignore_drag_release = TRUE;
  #endif
  #ifdef FEAT_EVAL
      int		break_ctrl_c = FALSE;
  #endif
      expand_T	xpc;
      long	*b_im_ptr = NULL;
  #if defined(FEAT_WILDMENU) || defined(FEAT_EVAL) || defined(FEAT_SEARCH_EXTRA)
      /* Everything that may work recursively should save and restore the
       * current command line in save_ccline.  That includes update_screen(), a
       * custom status line may invoke ":normal". */
      struct cmdline_info save_ccline;
  #endif
  
  #ifdef FEAT_SNIFF
      want_sniff_request = 0;
  #endif
  #ifdef FEAT_EVAL
      if (firstc == -1)
      {
  	firstc = NUL;
  	break_ctrl_c = TRUE;
      }
  #endif
  #ifdef FEAT_RIGHTLEFT
      /* start without Hebrew mapping for a command line */
      if (firstc == ':' || firstc == '=' || firstc == '>')
  	cmd_hkmap = 0;
  #endif
  
      ccline.overstrike = FALSE;		    /* always start in insert mode */
  #ifdef FEAT_SEARCH_EXTRA
      old_cursor = curwin->w_cursor;	    /* needs to be restored later */
      old_curswant = curwin->w_curswant;
      old_leftcol = curwin->w_leftcol;
      old_topline = curwin->w_topline;
  # ifdef FEAT_DIFF
      old_topfill = curwin->w_topfill;
  # endif
      old_botline = curwin->w_botline;
  #endif
  
      /*
       * set some variables for redrawcmd()
       */
      ccline.cmdfirstc = (firstc == '@' ? 0 : firstc);
      ccline.cmdindent = (firstc > 0 ? indent : 0);
  
      /* alloc initial ccline.cmdbuff */
      alloc_cmdbuff(exmode_active ? 250 : indent + 1);
      if (ccline.cmdbuff == NULL)
  	return NULL;			    /* out of memory */
      ccline.cmdlen = ccline.cmdpos = 0;
      ccline.cmdbuff[0] = NUL;
  
      /* autoindent for :insert and :append */
      if (firstc <= 0)
      {
  	copy_spaces(ccline.cmdbuff, indent);
  	ccline.cmdbuff[indent] = NUL;
  	ccline.cmdpos = indent;
  	ccline.cmdspos = indent;
  	ccline.cmdlen = indent;
      }
  
      ExpandInit(&xpc);
  
  #ifdef FEAT_RIGHTLEFT
      if (curwin->w_p_rl && *curwin->w_p_rlc == 's'
  					  && (firstc == '/' || firstc == '?'))
  	cmdmsg_rl = TRUE;
      else
  	cmdmsg_rl = FALSE;
  #endif
  
      redir_off = TRUE;		/* don't redirect the typed command */
      if (!cmd_silent)
      {
  	i = msg_scrolled;
  	msg_scrolled = 0;		/* avoid wait_return message */
  	gotocmdline(TRUE);
  	msg_scrolled += i;
  	redrawcmdprompt();		/* draw prompt or indent */
  	set_cmdspos();
      }
      xpc.xp_context = EXPAND_NOTHING;
      xpc.xp_backslash = XP_BS_NONE;
  #ifndef BACKSLASH_IN_FILENAME
      xpc.xp_shell = FALSE;
  #endif
  
  #if defined(FEAT_EVAL)
      if (ccline.input_fn)
      {
  	xpc.xp_context = ccline.xp_context;
  	xpc.xp_pattern = ccline.cmdbuff;
  # if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
  	xpc.xp_arg = ccline.xp_arg;
  # endif
      }
  #endif
  
      /*
       * Avoid scrolling when called by a recursive do_cmdline(), e.g. when
       * doing ":@0" when register 0 doesn't contain a CR.
       */
      msg_scroll = FALSE;
  
      State = CMDLINE;
  
      if (firstc == '/' || firstc == '?' || firstc == '@')
      {
  	/* Use ":lmap" mappings for search pattern and input(). */
  	if (curbuf->b_p_imsearch == B_IMODE_USE_INSERT)
  	    b_im_ptr = &curbuf->b_p_iminsert;
  	else
  	    b_im_ptr = &curbuf->b_p_imsearch;
  	if (*b_im_ptr == B_IMODE_LMAP)
  	    State |= LANGMAP;
  #ifdef USE_IM_CONTROL
  	im_set_active(*b_im_ptr == B_IMODE_IM);
  #endif
      }
  #ifdef USE_IM_CONTROL
      else if (p_imcmdline)
  	im_set_active(TRUE);
  #endif
  
  #ifdef FEAT_MOUSE
      setmouse();
  #endif
  #ifdef CURSOR_SHAPE
      ui_cursor_shape();		/* may show different cursor shape */
  #endif
  
      /* When inside an autocommand for writing "exiting" may be set and
       * terminal mode set to cooked.  Need to set raw mode here then. */
      settmode(TMODE_RAW);
  
  #ifdef FEAT_CMDHIST
      init_history();
      hiscnt = hislen;		/* set hiscnt to impossible history value */
      histype = hist_char2type(firstc);
  #endif
  
  #ifdef FEAT_DIGRAPHS
      do_digraph(-1);		/* init digraph typahead */
  #endif
  
      /*
       * Collect the command string, handling editing keys.
       */
      for (;;)
      {
  	redir_off = TRUE;	/* Don't redirect the typed command.
  				   Repeated, because a ":redir" inside
  				   completion may switch it on. */
  #ifdef USE_ON_FLY_SCROLL
  	dont_scroll = FALSE;	/* allow scrolling here */
  #endif
  	quit_more = FALSE;	/* reset after CTRL-D which had a more-prompt */
  
  	cursorcmd();		/* set the cursor on the right spot */
  
  	/* Get a character.  Ignore K_IGNORE, it should not do anything, such
  	 * as stop completion. */
  	do
  	{
  	    c = safe_vgetc();
  	} while (c == K_IGNORE);
  
  	if (KeyTyped)
  	{
  	    some_key_typed = TRUE;
  #ifdef FEAT_RIGHTLEFT
  	    if (cmd_hkmap)
  		c = hkmap(c);
  # ifdef FEAT_FKMAP
  	    if (cmd_fkmap)
  		c = cmdl_fkmap(c);
  # endif
  	    if (cmdmsg_rl && !KeyStuffed)
  	    {
  		/* Invert horizontal movements and operations.  Only when
  		 * typed by the user directly, not when the result of a
  		 * mapping. */
  		switch (c)
  		{
  		    case K_RIGHT:   c = K_LEFT; break;
  		    case K_S_RIGHT: c = K_S_LEFT; break;
  		    case K_C_RIGHT: c = K_C_LEFT; break;
  		    case K_LEFT:    c = K_RIGHT; break;
  		    case K_S_LEFT:  c = K_S_RIGHT; break;
  		    case K_C_LEFT:  c = K_C_RIGHT; break;
  		}
  	    }
  #endif
  	}
  
  	/*
  	 * Ignore got_int when CTRL-C was typed here.
  	 * Don't ignore it in :global, we really need to break then, e.g., for
  	 * ":g/pat/normal /pat" (without the <CR>).
  	 * Don't ignore it for the input() function.
  	 */
  	if ((c == Ctrl_C
  #ifdef UNIX
  		|| c == intr_char
  #endif
  				)
  #if defined(FEAT_EVAL) || defined(FEAT_CRYPT)
  		&& firstc != '@'
  #endif
  #ifdef FEAT_EVAL
  		&& !break_ctrl_c
  #endif
  		&& !global_busy)
  	    got_int = FALSE;
  
  #ifdef FEAT_CMDHIST
  	/* free old command line when finished moving around in the history
  	 * list */
  	if (lookfor != NULL
  		&& c != K_S_DOWN && c != K_S_UP
  		&& c != K_DOWN && c != K_UP
  		&& c != K_PAGEDOWN && c != K_PAGEUP
  		&& c != K_KPAGEDOWN && c != K_KPAGEUP
  		&& c != K_LEFT && c != K_RIGHT
  		&& (xpc.xp_numfiles > 0 || (c != Ctrl_P && c != Ctrl_N)))
  	{
  	    vim_free(lookfor);
  	    lookfor = NULL;
  	}
  #endif
  
  	/*
  	 * <S-Tab> works like CTRL-P (unless 'wc' is <S-Tab>).
  	 */
  	if (c != p_wc && c == K_S_TAB && xpc.xp_numfiles != -1)
  	    c = Ctrl_P;
  
  #ifdef FEAT_WILDMENU
  	/* Special translations for 'wildmenu' */
  	if (did_wild_list && p_wmnu)
  	{
  	    if (c == K_LEFT)
  		c = Ctrl_P;
  	    else if (c == K_RIGHT)
  		c = Ctrl_N;
  	}
  	/* Hitting CR after "emenu Name.": complete submenu */
  	if (xpc.xp_context == EXPAND_MENUNAMES && p_wmnu
  		&& ccline.cmdpos > 1
  		&& ccline.cmdbuff[ccline.cmdpos - 1] == '.'
  		&& ccline.cmdbuff[ccline.cmdpos - 2] != '\\'
  		&& (c == '\n' || c == '\r' || c == K_KENTER))
  	    c = K_DOWN;
  #endif
  
  	/* free expanded names when finished walking through matches */
  	if (xpc.xp_numfiles != -1
  		&& !(c == p_wc && KeyTyped) && c != p_wcm
  		&& c != Ctrl_N && c != Ctrl_P && c != Ctrl_A
  		&& c != Ctrl_L)
  	{
  	    (void)ExpandOne(&xpc, NULL, NULL, 0, WILD_FREE);
  	    did_wild_list = FALSE;
  #ifdef FEAT_WILDMENU
  	    if (!p_wmnu || (c != K_UP && c != K_DOWN))
  #endif
  		xpc.xp_context = EXPAND_NOTHING;
  	    wim_index = 0;
  #ifdef FEAT_WILDMENU
  	    if (p_wmnu && wild_menu_showing != 0)
  	    {
  		int skt = KeyTyped;
  		int old_RedrawingDisabled = RedrawingDisabled;
  
  		if (ccline.input_fn)
  		    RedrawingDisabled = 0;
  
  		if (wild_menu_showing == WM_SCROLLED)
  		{
  		    /* Entered command line, move it up */
  		    cmdline_row--;
  		    redrawcmd();
  		}
  		else if (save_p_ls != -1)
  		{
  		    /* restore 'laststatus' and 'winminheight' */
  		    p_ls = save_p_ls;
  		    p_wmh = save_p_wmh;
  		    last_status(FALSE);
  		    save_cmdline(&save_ccline);
  		    update_screen(VALID);	/* redraw the screen NOW */
  		    restore_cmdline(&save_ccline);
  		    redrawcmd();
  		    save_p_ls = -1;
  		}
  		else
  		{
  # ifdef FEAT_VERTSPLIT
  		    win_redraw_last_status(topframe);
  # else
  		    lastwin->w_redr_status = TRUE;
  # endif
  		    redraw_statuslines();
  		}
  		KeyTyped = skt;
  		wild_menu_showing = 0;
  		if (ccline.input_fn)
  		    RedrawingDisabled = old_RedrawingDisabled;
  	    }
  #endif
  	}
  
  #ifdef FEAT_WILDMENU
  	/* Special translations for 'wildmenu' */
  	if (xpc.xp_context == EXPAND_MENUNAMES && p_wmnu)
  	{
  	    /* Hitting <Down> after "emenu Name.": complete submenu */
  	    if (c == K_DOWN && ccline.cmdpos > 0
  				  && ccline.cmdbuff[ccline.cmdpos - 1] == '.')
  		c = p_wc;
  	    else if (c == K_UP)
  	    {
  		/* Hitting <Up>: Remove one submenu name in front of the
  		 * cursor */
  		int found = FALSE;
  
  		j = (int)(xpc.xp_pattern - ccline.cmdbuff);
  		i = 0;
  		while (--j > 0)
  		{
  		    /* check for start of menu name */
  		    if (ccline.cmdbuff[j] == ' '
  			    && ccline.cmdbuff[j - 1] != '\\')
  		    {
  			i = j + 1;
  			break;
  		    }
  		    /* check for start of submenu name */
  		    if (ccline.cmdbuff[j] == '.'
  			    && ccline.cmdbuff[j - 1] != '\\')
  		    {
  			if (found)
  			{
  			    i = j + 1;
  			    break;
  			}
  			else
  			    found = TRUE;
  		    }
  		}
  		if (i > 0)
  		    cmdline_del(i);
  		c = p_wc;
  		xpc.xp_context = EXPAND_NOTHING;
  	    }
  	}
  	if ((xpc.xp_context == EXPAND_FILES
  			      || xpc.xp_context == EXPAND_DIRECTORIES
  			      || xpc.xp_context == EXPAND_SHELLCMD) && p_wmnu)
  	{
  	    char_u upseg[5];
  
  	    upseg[0] = PATHSEP;
  	    upseg[1] = '.';
  	    upseg[2] = '.';
  	    upseg[3] = PATHSEP;
  	    upseg[4] = NUL;
  
  	    if (c == K_DOWN
  		    && ccline.cmdpos > 0
  		    && ccline.cmdbuff[ccline.cmdpos - 1] == PATHSEP
  		    && (ccline.cmdpos < 3
  			|| ccline.cmdbuff[ccline.cmdpos - 2] != '.'
  			|| ccline.cmdbuff[ccline.cmdpos - 3] != '.'))
  	    {
  		/* go down a directory */
  		c = p_wc;
  	    }
  	    else if (STRNCMP(xpc.xp_pattern, upseg + 1, 3) == 0 && c == K_DOWN)
  	    {
  		/* If in a direct ancestor, strip off one ../ to go down */
  		int found = FALSE;
  
  		j = ccline.cmdpos;
  		i = (int)(xpc.xp_pattern - ccline.cmdbuff);
  		while (--j > i)
  		{
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)
  			j -= (*mb_head_off)(ccline.cmdbuff, ccline.cmdbuff + j);
  #endif
  		    if (vim_ispathsep(ccline.cmdbuff[j]))
  		    {
  			found = TRUE;
  			break;
  		    }
  		}
  		if (found
  			&& ccline.cmdbuff[j - 1] == '.'
  			&& ccline.cmdbuff[j - 2] == '.'
  			&& (vim_ispathsep(ccline.cmdbuff[j - 3]) || j == i + 2))
  		{
  		    cmdline_del(j - 2);
  		    c = p_wc;
  		}
  	    }
  	    else if (c == K_UP)
  	    {
  		/* go up a directory */
  		int found = FALSE;
  
  		j = ccline.cmdpos - 1;
  		i = (int)(xpc.xp_pattern - ccline.cmdbuff);
  		while (--j > i)
  		{
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)
  			j -= (*mb_head_off)(ccline.cmdbuff, ccline.cmdbuff + j);
  #endif
  		    if (vim_ispathsep(ccline.cmdbuff[j])
  #ifdef BACKSLASH_IN_FILENAME
  			    && vim_strchr(" *?[{`$%#", ccline.cmdbuff[j + 1])
  			       == NULL
  #endif
  		       )
  		    {
  			if (found)
  			{
  			    i = j + 1;
  			    break;
  			}
  			else
  			    found = TRUE;
  		    }
  		}
  
  		if (!found)
  		    j = i;
  		else if (STRNCMP(ccline.cmdbuff + j, upseg, 4) == 0)
  		    j += 4;
  		else if (STRNCMP(ccline.cmdbuff + j, upseg + 1, 3) == 0
  			     && j == i)
  		    j += 3;
  		else
  		    j = 0;
  		if (j > 0)
  		{
  		    /* TODO this is only for DOS/UNIX systems - need to put in
  		     * machine-specific stuff here and in upseg init */
  		    cmdline_del(j);
  		    put_on_cmdline(upseg + 1, 3, FALSE);
  		}
  		else if (ccline.cmdpos > i)
  		    cmdline_del(i);
  		c = p_wc;
  	    }
  	}
  #if 0 /* If enabled <Down> on a file takes you _completely_ out of wildmenu */
  	if (p_wmnu
  		&& (xpc.xp_context == EXPAND_FILES
  		    || xpc.xp_context == EXPAND_MENUNAMES)
  		&& (c == K_UP || c == K_DOWN))
  	    xpc.xp_context = EXPAND_NOTHING;
  #endif
  
  #endif	/* FEAT_WILDMENU */
  
  	/* CTRL-\ CTRL-N goes to Normal mode, CTRL-\ CTRL-G goes to Insert
  	 * mode when 'insertmode' is set, CTRL-\ e prompts for an expression. */
  	if (c == Ctrl_BSL)
  	{
  	    ++no_mapping;
  	    ++allow_keys;
  	    c = plain_vgetc();
  	    --no_mapping;
  	    --allow_keys;
  	    /* CTRL-\ e doesn't work when obtaining an expression. */
  	    if (c != Ctrl_N && c != Ctrl_G
  				     && (c != 'e' || ccline.cmdfirstc == '='))
  	    {
  		vungetc(c);
  		c = Ctrl_BSL;
  	    }
  #ifdef FEAT_EVAL
  	    else if (c == 'e')
  	    {
  		char_u		    *p = NULL;
  
  		/*
  		 * Replace the command line with the result of an expression.
  		 * Need to save and restore the current command line, to be
  		 * able to enter a new one...
  		 */
  		if (ccline.cmdpos == ccline.cmdlen)
  		    new_cmdpos = 99999;	/* keep it at the end */
  		else
  		    new_cmdpos = ccline.cmdpos;
  
  		save_cmdline(&save_ccline);
  		c = get_expr_register();
  		restore_cmdline(&save_ccline);
  		if (c == '=')
  		{
  		    /* Need to save and restore ccline.  And set "textlock"
  		     * to avoid nasty things like going to another buffer when
  		     * evaluating an expression. */
  		    save_cmdline(&save_ccline);
  		    ++textlock;
  		    p = get_expr_line();
  		    --textlock;
  		    restore_cmdline(&save_ccline);
  
  		    if (p != NULL && realloc_cmdbuff((int)STRLEN(p) + 1) == OK)
  		    {
  			ccline.cmdlen = (int)STRLEN(p);
  			STRCPY(ccline.cmdbuff, p);
  			vim_free(p);
  
  			/* Restore the cursor or use the position set with
  			 * set_cmdline_pos(). */
  			if (new_cmdpos > ccline.cmdlen)
  			    ccline.cmdpos = ccline.cmdlen;
  			else
  			    ccline.cmdpos = new_cmdpos;
  
  			KeyTyped = FALSE;	/* Don't do p_wc completion. */
  			redrawcmd();
  			goto cmdline_changed;
  		    }
  		}
  		beep_flush();
  		c = ESC;
  	    }
  #endif
  	    else
  	    {
  		if (c == Ctrl_G && p_im && restart_edit == 0)
  		    restart_edit = 'a';
  		gotesc = TRUE;	/* will free ccline.cmdbuff after putting it
  				   in history */
  		goto returncmd;	/* back to Normal mode */
  	    }
  	}
  
  #ifdef FEAT_CMDWIN
  	if (c == cedit_key || c == K_CMDWIN)
  	{
  #ifdef FEAT_GDB
              /* Set cmdfirstc before calling ex_window (up to now it is NUL:
  	     * the input line does not have a '@' leading character) */
              if (firstc == '@')
                  ccline.cmdfirstc = firstc;
  #endif
  	    /*
  	     * Open a window to edit the command line (and history).
  	     */
  	    c = ex_window();
  	    some_key_typed = TRUE;
  	}
  # ifdef FEAT_DIGRAPHS
  	else
  # endif
  #endif
  #ifdef FEAT_DIGRAPHS
  	    c = do_digraph(c);
  #endif
  
  	if (c == '\n' || c == '\r' || c == K_KENTER || (c == ESC
  			&& (!KeyTyped || vim_strchr(p_cpo, CPO_ESC) != NULL)))
  	{
  	    /* In Ex mode a backslash escapes a newline. */
  	    if (exmode_active
  		    && c != ESC
  		    && ccline.cmdpos == ccline.cmdlen
  		    && ccline.cmdpos > 0
  		    && ccline.cmdbuff[ccline.cmdpos - 1] == '\\')
  	    {
  		if (c == K_KENTER)
  		    c = '\n';
  	    }
  	    else
  	    {
  		gotesc = FALSE;	/* Might have typed ESC previously, don't
  				       truncate the cmdline now. */
  		if (ccheck_abbr(c + ABBR_OFF))
  		    goto cmdline_changed;
  		if (!cmd_silent)
  		{
  		    windgoto(msg_row, 0);
  		    out_flush();
  		}
  		break;
  	    }
  	}
  
  	/*
  	 * Completion for 'wildchar' or 'wildcharm' key.
  	 * - hitting <ESC> twice means: abandon command line.
  	 * - wildcard expansion is only done when the 'wildchar' key is really
  	 *   typed, not when it comes from a macro
  	 */
  	if ((c == p_wc && !gotesc && KeyTyped) || c == p_wcm)
  	{
  	    if (xpc.xp_numfiles > 0)   /* typed p_wc at least twice */
  	    {
  		/* if 'wildmode' contains "list" may still need to list */
  		if (xpc.xp_numfiles > 1
  			&& !did_wild_list
  			&& (wim_flags[wim_index] & WIM_LIST))
  		{
  		    (void)showmatches(&xpc, FALSE);
  		    redrawcmd();
  		    did_wild_list = TRUE;
  		}
  		if (wim_flags[wim_index] & WIM_LONGEST)
  		    res = nextwild(&xpc, WILD_LONGEST, WILD_NO_BEEP);
  		else if (wim_flags[wim_index] & WIM_FULL)
  		    res = nextwild(&xpc, WILD_NEXT, WILD_NO_BEEP);
  		else
  		    res = OK;	    /* don't insert 'wildchar' now */
  	    }
  	    else		    /* typed p_wc first time */
  	    {
  		wim_index = 0;
  		j = ccline.cmdpos;
  		/* if 'wildmode' first contains "longest", get longest
  		 * common part */
  		if (wim_flags[0] & WIM_LONGEST)
  		    res = nextwild(&xpc, WILD_LONGEST, WILD_NO_BEEP);
  		else
  		    res = nextwild(&xpc, WILD_EXPAND_KEEP, WILD_NO_BEEP);
  
  		/* if interrupted while completing, behave like it failed */
  		if (got_int)
  		{
  		    (void)vpeekc();	/* remove <C-C> from input stream */
  		    got_int = FALSE;	/* don't abandon the command line */
  		    (void)ExpandOne(&xpc, NULL, NULL, 0, WILD_FREE);
  #ifdef FEAT_WILDMENU
  		    xpc.xp_context = EXPAND_NOTHING;
  #endif
  		    goto cmdline_changed;
  		}
  
  		/* when more than one match, and 'wildmode' first contains
  		 * "list", or no change and 'wildmode' contains "longest,list",
  		 * list all matches */
  		if (res == OK && xpc.xp_numfiles > 1)
  		{
  		    /* a "longest" that didn't do anything is skipped (but not
  		     * "list:longest") */
  		    if (wim_flags[0] == WIM_LONGEST && ccline.cmdpos == j)
  			wim_index = 1;
  		    if ((wim_flags[wim_index] & WIM_LIST)
  #ifdef FEAT_WILDMENU
  			    || (p_wmnu && (wim_flags[wim_index] & WIM_FULL) != 0)
  #endif
  			    )
  		    {
  			if (!(wim_flags[0] & WIM_LONGEST))
  			{
  #ifdef FEAT_WILDMENU
  			    int p_wmnu_save = p_wmnu;
  			    p_wmnu = 0;
  #endif
  			    nextwild(&xpc, WILD_PREV, 0); /* remove match */
  #ifdef FEAT_WILDMENU
  			    p_wmnu = p_wmnu_save;
  #endif
  			}
  #ifdef FEAT_WILDMENU
  			(void)showmatches(&xpc, p_wmnu
  				&& ((wim_flags[wim_index] & WIM_LIST) == 0));
  #else
  			(void)showmatches(&xpc, FALSE);
  #endif
  			redrawcmd();
  			did_wild_list = TRUE;
  			if (wim_flags[wim_index] & WIM_LONGEST)
  			    nextwild(&xpc, WILD_LONGEST, WILD_NO_BEEP);
  			else if (wim_flags[wim_index] & WIM_FULL)
  			    nextwild(&xpc, WILD_NEXT, WILD_NO_BEEP);
  		    }
  		    else
  			vim_beep();
  		}
  #ifdef FEAT_WILDMENU
  		else if (xpc.xp_numfiles == -1)
  		    xpc.xp_context = EXPAND_NOTHING;
  #endif
  	    }
  	    if (wim_index < 3)
  		++wim_index;
  	    if (c == ESC)
  		gotesc = TRUE;
  	    if (res == OK)
  		goto cmdline_changed;
  	}
  
  	gotesc = FALSE;
  
  	/* <S-Tab> goes to last match, in a clumsy way */
  	if (c == K_S_TAB && KeyTyped)
  	{
  	    if (nextwild(&xpc, WILD_EXPAND_KEEP, 0) == OK
  		    && nextwild(&xpc, WILD_PREV, 0) == OK
  		    && nextwild(&xpc, WILD_PREV, 0) == OK)
  		goto cmdline_changed;
  	}
  
  	if (c == NUL || c == K_ZERO)	    /* NUL is stored as NL */
  	    c = NL;
  
  	do_abbr = TRUE;		/* default: check for abbreviation */
  
  	/*
  	 * Big switch for a typed command line character.
  	 */
  	switch (c)
  	{
  	case K_BS:
  	case Ctrl_H:
  	case K_DEL:
  	case K_KDEL:
  	case Ctrl_W:
  #ifdef FEAT_FKMAP
  		if (cmd_fkmap && c == K_BS)
  		    c = K_DEL;
  #endif
  		if (c == K_KDEL)
  		    c = K_DEL;
  
  		/*
  		 * delete current character is the same as backspace on next
  		 * character, except at end of line
  		 */
  		if (c == K_DEL && ccline.cmdpos != ccline.cmdlen)
  		    ++ccline.cmdpos;
  #ifdef FEAT_MBYTE
  		if (has_mbyte && c == K_DEL)
  		    ccline.cmdpos += mb_off_next(ccline.cmdbuff,
  					      ccline.cmdbuff + ccline.cmdpos);
  #endif
  		if (ccline.cmdpos > 0)
  		{
  		    char_u *p;
  
  		    j = ccline.cmdpos;
  		    p = ccline.cmdbuff + j;
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)
  		    {
  			p = mb_prevptr(ccline.cmdbuff, p);
  			if (c == Ctrl_W)
  			{
  			    while (p > ccline.cmdbuff && vim_isspace(*p))
  				p = mb_prevptr(ccline.cmdbuff, p);
  			    i = mb_get_class(p);
  			    while (p > ccline.cmdbuff && mb_get_class(p) == i)
  				p = mb_prevptr(ccline.cmdbuff, p);
  			    if (mb_get_class(p) != i)
  				p += (*mb_ptr2len)(p);
  			}
  		    }
  		    else
  #endif
  			if (c == Ctrl_W)
  		    {
  			while (p > ccline.cmdbuff && vim_isspace(p[-1]))
  			    --p;
  			i = vim_iswordc(p[-1]);
  			while (p > ccline.cmdbuff && !vim_isspace(p[-1])
  				&& vim_iswordc(p[-1]) == i)
  			    --p;
  		    }
  		    else
  			--p;
  		    ccline.cmdpos = (int)(p - ccline.cmdbuff);
  		    ccline.cmdlen -= j - ccline.cmdpos;
  		    i = ccline.cmdpos;
  		    while (i < ccline.cmdlen)
  			ccline.cmdbuff[i++] = ccline.cmdbuff[j++];
  
  		    /* Truncate at the end, required for multi-byte chars. */
  		    ccline.cmdbuff[ccline.cmdlen] = NUL;
  		    redrawcmd();
  		}
  		else if (ccline.cmdlen == 0 && c != Ctrl_W
  				   && ccline.cmdprompt == NULL && indent == 0)
  		{
  		    /* In ex and debug mode it doesn't make sense to return. */
  		    if (exmode_active
  #ifdef FEAT_EVAL
  			    || ccline.cmdfirstc == '>'
  #endif
  			    )
  			goto cmdline_not_changed;
  
  		    vim_free(ccline.cmdbuff);	/* no commandline to return */
  		    ccline.cmdbuff = NULL;
  		    if (!cmd_silent)
  		    {
  #ifdef FEAT_RIGHTLEFT
  			if (cmdmsg_rl)
  			    msg_col = Columns;
  			else
  #endif
  			    msg_col = 0;
  			msg_putchar(' ');		/* delete ':' */
  		    }
  		    redraw_cmdline = TRUE;
  		    goto returncmd;		/* back to cmd mode */
  		}
  		goto cmdline_changed;
  
  	case K_INS:
  	case K_KINS:
  #ifdef FEAT_FKMAP
  		/* if Farsi mode set, we are in reverse insert mode -
  		   Do not change the mode */
  		if (cmd_fkmap)
  		    beep_flush();
  		else
  #endif
  		ccline.overstrike = !ccline.overstrike;
  #ifdef CURSOR_SHAPE
  		ui_cursor_shape();	/* may show different cursor shape */
  #endif
  		goto cmdline_not_changed;
  
  	case Ctrl_HAT:
  		if (map_to_exists_mode((char_u *)"", LANGMAP, FALSE))
  		{
  		    /* ":lmap" mappings exists, toggle use of mappings. */
  		    State ^= LANGMAP;
  #ifdef USE_IM_CONTROL
  		    im_set_active(FALSE);	/* Disable input method */
  #endif
  		    if (b_im_ptr != NULL)
  		    {
  			if (State & LANGMAP)
  			    *b_im_ptr = B_IMODE_LMAP;
  			else
  			    *b_im_ptr = B_IMODE_NONE;
  		    }
  		}
  #ifdef USE_IM_CONTROL
  		else
  		{
  		    /* There are no ":lmap" mappings, toggle IM.  When
  		     * 'imdisable' is set don't try getting the status, it's
  		     * always off. */
  		    if ((p_imdisable && b_im_ptr != NULL)
  			    ? *b_im_ptr == B_IMODE_IM : im_get_status())
  		    {
  			im_set_active(FALSE);	/* Disable input method */
  			if (b_im_ptr != NULL)
  			    *b_im_ptr = B_IMODE_NONE;
  		    }
  		    else
  		    {
  			im_set_active(TRUE);	/* Enable input method */
  			if (b_im_ptr != NULL)
  			    *b_im_ptr = B_IMODE_IM;
  		    }
  		}
  #endif
  		if (b_im_ptr != NULL)
  		{
  		    if (b_im_ptr == &curbuf->b_p_iminsert)
  			set_iminsert_global();
  		    else
  			set_imsearch_global();
  		}
  #ifdef CURSOR_SHAPE
  		ui_cursor_shape();	/* may show different cursor shape */
  #endif
  #if defined(FEAT_WINDOWS) && defined(FEAT_KEYMAP)
  		/* Show/unshow value of 'keymap' in status lines later. */
  		status_redraw_curbuf();
  #endif
  		goto cmdline_not_changed;
  
  /*	case '@':   only in very old vi */
  	case Ctrl_U:
  		/* delete all characters left of the cursor */
  		j = ccline.cmdpos;
  		ccline.cmdlen -= j;
  		i = ccline.cmdpos = 0;
  		while (i < ccline.cmdlen)
  		    ccline.cmdbuff[i++] = ccline.cmdbuff[j++];
  		/* Truncate at the end, required for multi-byte chars. */
  		ccline.cmdbuff[ccline.cmdlen] = NUL;
  		redrawcmd();
  		goto cmdline_changed;
  
  #ifdef FEAT_CLIPBOARD
  	case Ctrl_Y:
  		/* Copy the modeless selection, if there is one. */
  		if (clip_star.state != SELECT_CLEARED)
  		{
  		    if (clip_star.state == SELECT_DONE)
  			clip_copy_modeless_selection(TRUE);
  		    goto cmdline_not_changed;
  		}
  		break;
  #endif
  
  	case ESC:	/* get here if p_wc != ESC or when ESC typed twice */
  	case Ctrl_C:
  		/* In exmode it doesn't make sense to return.  Except when
  		 * ":normal" runs out of characters. */
  		if (exmode_active
  #ifdef FEAT_EX_EXTRA
  			&& (ex_normal_busy == 0 || typebuf.tb_len > 0)
  #endif
  		   )
  		    goto cmdline_not_changed;
  
  		gotesc = TRUE;		/* will free ccline.cmdbuff after
  					   putting it in history */
  		goto returncmd;		/* back to cmd mode */
  
  	case Ctrl_R:			/* insert register */
  #ifdef USE_ON_FLY_SCROLL
  		dont_scroll = TRUE;	/* disallow scrolling here */
  #endif
  		putcmdline('"', TRUE);
  		++no_mapping;
  		i = c = plain_vgetc();	/* CTRL-R <char> */
  		if (i == Ctrl_O)
  		    i = Ctrl_R;		/* CTRL-R CTRL-O == CTRL-R CTRL-R */
  		if (i == Ctrl_R)
  		    c = plain_vgetc();	/* CTRL-R CTRL-R <char> */
  		--no_mapping;
  #ifdef FEAT_EVAL
  		/*
  		 * Insert the result of an expression.
  		 * Need to save the current command line, to be able to enter
  		 * a new one...
  		 */
  		new_cmdpos = -1;
  		if (c == '=')
  		{
  		    if (ccline.cmdfirstc == '=')/* can't do this recursively */
  		    {
  			beep_flush();
  			c = ESC;
  		    }
  		    else
  		    {
  			save_cmdline(&save_ccline);
  			c = get_expr_register();
  			restore_cmdline(&save_ccline);
  		    }
  		}
  #endif
  		if (c != ESC)	    /* use ESC to cancel inserting register */
  		{
  		    cmdline_paste(c, i == Ctrl_R, FALSE);
  
  #ifdef FEAT_EVAL
  		    /* When there was a serious error abort getting the
  		     * command line. */
  		    if (aborting())
  		    {
  			gotesc = TRUE;  /* will free ccline.cmdbuff after
  					   putting it in history */
  			goto returncmd; /* back to cmd mode */
  		    }
  #endif
  		    KeyTyped = FALSE;	/* Don't do p_wc completion. */
  #ifdef FEAT_EVAL
  		    if (new_cmdpos >= 0)
  		    {
  			/* set_cmdline_pos() was used */
  			if (new_cmdpos > ccline.cmdlen)
  			    ccline.cmdpos = ccline.cmdlen;
  			else
  			    ccline.cmdpos = new_cmdpos;
  		    }
  #endif
  		}
  		redrawcmd();
  		goto cmdline_changed;
  
  	case Ctrl_D:
  		if (showmatches(&xpc, FALSE) == EXPAND_NOTHING)
  		    break;	/* Use ^D as normal char instead */
  
  		redrawcmd();
  		continue;	/* don't do incremental search now */
  
  	case K_RIGHT:
  	case K_S_RIGHT:
  	case K_C_RIGHT:
  		do
  		{
  		    if (ccline.cmdpos >= ccline.cmdlen)
  			break;
  		    i = cmdline_charsize(ccline.cmdpos);
  		    if (KeyTyped && ccline.cmdspos + i >= Columns * Rows)
  			break;
  		    ccline.cmdspos += i;
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)
  			ccline.cmdpos += (*mb_ptr2len)(ccline.cmdbuff
  							     + ccline.cmdpos);
  		    else
  #endif
  			++ccline.cmdpos;
  		}
  		while ((c == K_S_RIGHT || c == K_C_RIGHT
  			       || (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_CTRL)))
  			&& ccline.cmdbuff[ccline.cmdpos] != ' ');
  #ifdef FEAT_MBYTE
  		if (has_mbyte)
  		    set_cmdspos_cursor();
  #endif
  		goto cmdline_not_changed;
  
  	case K_LEFT:
  	case K_S_LEFT:
  	case K_C_LEFT:
  		if (ccline.cmdpos == 0)
  		    goto cmdline_not_changed;
  		do
  		{
  		    --ccline.cmdpos;
  #ifdef FEAT_MBYTE
  		    if (has_mbyte)	/* move to first byte of char */
  			ccline.cmdpos -= (*mb_head_off)(ccline.cmdbuff,
  					      ccline.cmdbuff + ccline.cmdpos);
  #endif
  		    ccline.cmdspos -= cmdline_charsize(ccline.cmdpos);
  		}
  		while (ccline.cmdpos > 0
  			&& (c == K_S_LEFT || c == K_C_LEFT
  			       || (mod_mask & (MOD_MASK_SHIFT|MOD_MASK_CTRL)))
  			&& ccline.cmdbuff[ccline.cmdpos - 1] != ' ');
  #ifdef FEAT_MBYTE
  		if (has_mbyte)
  		    set_cmdspos_cursor();
  #endif
  		goto cmdline_not_changed;
  
  	case K_IGNORE:
  		/* Ignore mouse event or ex_window() result. */
  		goto cmdline_not_changed;
  
  #ifdef FEAT_GUI_W32
  	    /* On Win32 ignore <M-F4>, we get it when closing the window was
  	     * cancelled. */
  	case K_F4:
  	    if (mod_mask == MOD_MASK_ALT)
  	    {
  		redrawcmd();	    /* somehow the cmdline is cleared */
  		goto cmdline_not_changed;
  	    }
  	    break;
  #endif
  
  #ifdef FEAT_MOUSE
  	case K_MIDDLEDRAG:
  	case K_MIDDLERELEASE:
  		goto cmdline_not_changed;	/* Ignore mouse */
  
  	case K_MIDDLEMOUSE:
  # ifdef FEAT_GUI
  		/* When GUI is active, also paste when 'mouse' is empty */
  		if (!gui.in_use)
  # endif
  		    if (!mouse_has(MOUSE_COMMAND))
  			goto cmdline_not_changed;   /* Ignore mouse */
  # ifdef FEAT_CLIPBOARD
  		if (clip_star.available)
  		    cmdline_paste('*', TRUE, TRUE);
  		else
  # endif
  		    cmdline_paste(0, TRUE, TRUE);
  		redrawcmd();
  		goto cmdline_changed;
  
  # ifdef FEAT_DND
  	case K_DROP:
  		cmdline_paste('~', TRUE, FALSE);
  		redrawcmd();
  		goto cmdline_changed;
  # endif
  
  	case K_LEFTDRAG:
  	case K_LEFTRELEASE:
  	case K_RIGHTDRAG:
  	case K_RIGHTRELEASE:
  		/* Ignore drag and release events when the button-down wasn't
  		 * seen before. */
  		if (ignore_drag_release)
  		    goto cmdline_not_changed;
  		/* FALLTHROUGH */
  	case K_LEFTMOUSE:
  	case K_RIGHTMOUSE:
  		if (c == K_LEFTRELEASE || c == K_RIGHTRELEASE)
  		    ignore_drag_release = TRUE;
  		else
  		    ignore_drag_release = FALSE;
  # ifdef FEAT_GUI
  		/* When GUI is active, also move when 'mouse' is empty */
  		if (!gui.in_use)
  # endif
  		    if (!mouse_has(MOUSE_COMMAND))
  			goto cmdline_not_changed;   /* Ignore mouse */
  # ifdef FEAT_CLIPBOARD
  		if (mouse_row < cmdline_row && clip_star.available)
  		{
  		    int	    button, is_click, is_drag;
  
  		    /*
  		     * Handle modeless selection.
  		     */
  		    button = get_mouse_button(KEY2TERMCAP1(c),
  							 &is_click, &is_drag);
  		    if (mouse_model_popup() && button == MOUSE_LEFT
  					       && (mod_mask & MOD_MASK_SHIFT))
  		    {
  			/* Translate shift-left to right button. */
  			button = MOUSE_RIGHT;
  			mod_mask &= ~MOD_MASK_SHIFT;
  		    }
  		    clip_modeless(button, is_click, is_drag);
  		    goto cmdline_not_changed;
  		}
  # endif
  
  		set_cmdspos();
  		for (ccline.cmdpos = 0; ccline.cmdpos < ccline.cmdlen;
  							      ++ccline.cmdpos)
  		{
  		    i = cmdline_charsize(ccline.cmdpos);
  		    if (mouse_row <= cmdline_row + ccline.cmdspos / Columns
  				  && mouse_col < ccline.cmdspos % Columns + i)
  			break;
  # ifdef FEAT_MBYTE
  		    if (has_mbyte)
  		    {
  			/* Count ">" for double-wide char that doesn't fit. */
  			correct_cmdspos(ccline.cmdpos, i);
  			ccline.cmdpos += (*mb_ptr2len)(ccline.cmdbuff
  							 + ccline.cmdpos) - 1;
  		    }
  # endif
  		    ccline.cmdspos += i;
  		}
  		goto cmdline_not_changed;
  
  	/* Mouse scroll wheel: ignored here */
  	case K_MOUSEDOWN:
  	case K_MOUSEUP:
  	/* Alternate buttons ignored here */
  	case K_X1MOUSE:
  	case K_X1DRAG:
  	case K_X1RELEASE:
  	case K_X2MOUSE:
  	case K_X2DRAG:
  	case K_X2RELEASE:
  		goto cmdline_not_changed;
  
  #endif	/* FEAT_MOUSE */
  
  #ifdef FEAT_GUI
  	case K_LEFTMOUSE_NM:	/* mousefocus click, ignored */
  	case K_LEFTRELEASE_NM:
  		goto cmdline_not_changed;
  
  	case K_VER_SCROLLBAR:
  		if (msg_scrolled == 0)
  		{
  		    gui_do_scroll();
  		    redrawcmd();
  		}
  		goto cmdline_not_changed;
  
  	case K_HOR_SCROLLBAR:
  		if (msg_scrolled == 0)
  		{
  		    gui_do_horiz_scroll();
  		    redrawcmd();
  		}
  		goto cmdline_not_changed;
  #endif
  #ifdef FEAT_GUI_TABLINE
  	case K_TABLINE:
  	case K_TABMENU:
  		/* Don't want to change any tabs here.  Make sure the same tab
  		 * is still selected. */
  		if (gui_use_tabline())
  		    gui_mch_set_curtab(tabpage_index(curtab));
  		goto cmdline_not_changed;
  #endif
  
  	case K_SELECT:	    /* end of Select mode mapping - ignore */
  		goto cmdline_not_changed;
  
  	case Ctrl_B:	    /* begin of command line */
  	case K_HOME:
  	case K_KHOME:
  	case K_S_HOME:
  	case K_C_HOME:
  		ccline.cmdpos = 0;
  		set_cmdspos();
  		goto cmdline_not_changed;
  
  	case Ctrl_E:	    /* end of command line */
  	case K_END:
  	case K_KEND:
  	case K_S_END:
  	case K_C_END:
  		ccline.cmdpos = ccline.cmdlen;
  		set_cmdspos_cursor();
  		goto cmdline_not_changed;
  
  	case Ctrl_A:	    /* all matches */
  		if (nextwild(&xpc, WILD_ALL, 0) == FAIL)
  		    break;
  		goto cmdline_changed;
  
  	case Ctrl_L:
  #ifdef FEAT_SEARCH_EXTRA
  		if (p_is && !cmd_silent && (firstc == '/' || firstc == '?'))
  		{
  		    /* Add a character from under the cursor for 'incsearch' */
  		    if (did_incsearch
  				   && !equalpos(curwin->w_cursor, old_cursor))
  		    {
  			c = gchar_cursor();
  			if (c != NUL)
  			{
  			    if (c == firstc || vim_strchr((char_u *)(
  					    p_magic ? "\\^$.*[" : "\\^$"), c)
  								      != NULL)
  			    {
  				/* put a backslash before special characters */
  				stuffcharReadbuff(c);
  				c = '\\';
  			    }
  			    break;
  			}
  		    }
  		    goto cmdline_not_changed;
  		}
  #endif
  
  		/* completion: longest common part */
  		if (nextwild(&xpc, WILD_LONGEST, 0) == FAIL)
  		    break;
  		goto cmdline_changed;
  
  	case Ctrl_N:	    /* next match */
  	case Ctrl_P:	    /* previous match */
  		if (xpc.xp_numfiles > 0)
  		{
  		    if (nextwild(&xpc, (c == Ctrl_P) ? WILD_PREV : WILD_NEXT, 0)
  								      == FAIL)
  			break;
  		    goto cmdline_changed;
  		}
  
  #ifdef FEAT_CMDHIST
  	case K_UP:
  	case K_DOWN:
  	case K_S_UP:
  	case K_S_DOWN:
  	case K_PAGEUP:
  	case K_KPAGEUP:
  	case K_PAGEDOWN:
  	case K_KPAGEDOWN:
  		if (hislen == 0 || firstc == NUL)	/* no history */
  		    goto cmdline_not_changed;
  
  		i = hiscnt;
  
  		/* save current command string so it can be restored later */
  		if (lookfor == NULL)
  		{
  		    if ((lookfor = vim_strsave(ccline.cmdbuff)) == NULL)
  			goto cmdline_not_changed;
  		    lookfor[ccline.cmdpos] = NUL;
  		}
  
  		j = (int)STRLEN(lookfor);
  		for (;;)
  		{
  		    /* one step backwards */
  		    if (c == K_UP|| c == K_S_UP || c == Ctrl_P
  			    || c == K_PAGEUP || c == K_KPAGEUP)
  		    {
  			if (hiscnt == hislen)	/* first time */
  			    hiscnt = hisidx[histype];
  			else if (hiscnt == 0 && hisidx[histype] != hislen - 1)
  			    hiscnt = hislen - 1;
  			else if (hiscnt != hisidx[histype] + 1)
  			    --hiscnt;
  			else			/* at top of list */
  			{
  			    hiscnt = i;
  			    break;
  			}
  		    }
  		    else    /* one step forwards */
  		    {
  			/* on last entry, clear the line */
  			if (hiscnt == hisidx[histype])
  			{
  			    hiscnt = hislen;
  			    break;
  			}
  
  			/* not on a history line, nothing to do */
  			if (hiscnt == hislen)
  			    break;
  			if (hiscnt == hislen - 1)   /* wrap around */
  			    hiscnt = 0;
  			else
  			    ++hiscnt;
  		    }
  		    if (hiscnt < 0 || history[histype][hiscnt].hisstr == NULL)
  		    {
  			hiscnt = i;
  			break;
  		    }
  		    if ((c != K_UP && c != K_DOWN)
  			    || hiscnt == i
  			    || STRNCMP(history[histype][hiscnt].hisstr,
  						    lookfor, (size_t)j) == 0)
  			break;
  		}
  
  		if (hiscnt != i)	/* jumped to other entry */
  		{
  		    char_u	*p;
  		    int		len;
  		    int		old_firstc;
  
  		    vim_free(ccline.cmdbuff);
  		    if (hiscnt == hislen)
  			p = lookfor;	/* back to the old one */
  		    else
  			p = history[histype][hiscnt].hisstr;
  
  		    if (histype == HIST_SEARCH
  			    && p != lookfor
  			    && (old_firstc = p[STRLEN(p) + 1]) != firstc)
  		    {
  			/* Correct for the separator character used when
  			 * adding the history entry vs the one used now.
  			 * First loop: count length.
  			 * Second loop: copy the characters. */
  			for (i = 0; i <= 1; ++i)
  			{
  			    len = 0;
  			    for (j = 0; p[j] != NUL; ++j)
  			    {
  				/* Replace old sep with new sep, unless it is
  				 * escaped. */
  				if (p[j] == old_firstc
  					      && (j == 0 || p[j - 1] != '\\'))
  				{
  				    if (i > 0)
  					ccline.cmdbuff[len] = firstc;
  				}
  				else
  				{
  				    /* Escape new sep, unless it is already
  				     * escaped. */
  				    if (p[j] == firstc
  					      && (j == 0 || p[j - 1] != '\\'))
  				    {
  					if (i > 0)
  					    ccline.cmdbuff[len] = '\\';
  					++len;
  				    }
  				    if (i > 0)
  					ccline.cmdbuff[len] = p[j];
  				}
  				++len;
  			    }
  			    if (i == 0)
  			    {
  				alloc_cmdbuff(len);
  				if (ccline.cmdbuff == NULL)
  				    goto returncmd;
  			    }
  			}
  			ccline.cmdbuff[len] = NUL;
  		    }
  		    else
  		    {
  			alloc_cmdbuff((int)STRLEN(p));
  			if (ccline.cmdbuff == NULL)
  			    goto returncmd;
  			STRCPY(ccline.cmdbuff, p);
  		    }
  
  		    ccline.cmdpos = ccline.cmdlen = (int)STRLEN(ccline.cmdbuff);
  		    redrawcmd();
  		    goto cmdline_changed;
  		}
  		beep_flush();
  		goto cmdline_not_changed;
  #endif
  
  	case Ctrl_V:
  	case Ctrl_Q:
  #ifdef FEAT_MOUSE
  		ignore_drag_release = TRUE;
  #endif
  		putcmdline('^', TRUE);
  		c = get_literal();	    /* get next (two) character(s) */
  		do_abbr = FALSE;	    /* don't do abbreviation now */
  #ifdef FEAT_MBYTE
  		/* may need to remove ^ when composing char was typed */
  		if (enc_utf8 && utf_iscomposing(c) && !cmd_silent)
  		{
  		    draw_cmdline(ccline.cmdpos, ccline.cmdlen - ccline.cmdpos);
  		    msg_putchar(' ');
  		    cursorcmd();
  		}
  #endif
  		break;
  
  #ifdef FEAT_DIGRAPHS
  	case Ctrl_K:
  #ifdef FEAT_MOUSE
  		ignore_drag_release = TRUE;
  #endif
  		putcmdline('?', TRUE);
  #ifdef USE_ON_FLY_SCROLL
  		dont_scroll = TRUE;	    /* disallow scrolling here */
  #endif
  		c = get_digraph(TRUE);
  		if (c != NUL)
  		    break;
  
  		redrawcmd();
  		goto cmdline_not_changed;
  #endif /* FEAT_DIGRAPHS */
  
  #ifdef FEAT_RIGHTLEFT
  	case Ctrl__:	    /* CTRL-_: switch language mode */
  		if (!p_ari)
  		    break;
  #ifdef FEAT_FKMAP
  		if (p_altkeymap)
  		{
  		    cmd_fkmap = !cmd_fkmap;
  		    if (cmd_fkmap)	/* in Farsi always in Insert mode */
  			ccline.overstrike = FALSE;
  		}
  		else			    /* Hebrew is default */
  #endif
  		    cmd_hkmap = !cmd_hkmap;
  		goto cmdline_not_changed;
  #endif
  
  	default:
  #ifdef UNIX
  		if (c == intr_char)
  		{
  		    gotesc = TRUE;	/* will free ccline.cmdbuff after
  					   putting it in history */
  		    goto returncmd;	/* back to Normal mode */
  		}
  #endif
  		/*
  		 * Normal character with no special meaning.  Just set mod_mask
  		 * to 0x0 so that typing Shift-Space in the GUI doesn't enter
  		 * the string <S-Space>.  This should only happen after ^V.
  		 */
  		if (!IS_SPECIAL(c))
  		    mod_mask = 0x0;
  		break;
  	}
  	/*
  	 * End of switch on command line character.
  	 * We come here if we have a normal character.
  	 */
  
  	if (do_abbr && (IS_SPECIAL(c) || !vim_iswordc(c)) && ccheck_abbr(
  #ifdef FEAT_MBYTE
  			/* Add ABBR_OFF for characters above 0x100, this is
  			 * what check_abbr() expects. */
  			(has_mbyte && c >= 0x100) ? (c + ABBR_OFF) :
  #endif
  									c))
  	    goto cmdline_changed;
  
  	/*
  	 * put the character in the command line
  	 */
  	if (IS_SPECIAL(c) || mod_mask != 0)
  	    put_on_cmdline(get_special_key_name(c, mod_mask), -1, TRUE);
  	else
  	{
  #ifdef FEAT_MBYTE
  	    if (has_mbyte)
  	    {
  		j = (*mb_char2bytes)(c, IObuff);
  		IObuff[j] = NUL;	/* exclude composing chars */
  		put_on_cmdline(IObuff, j, TRUE);
  	    }
  	    else
  #endif
  	    {
  		IObuff[0] = c;
  		put_on_cmdline(IObuff, 1, TRUE);
  	    }
  	}
  	goto cmdline_changed;
  
  /*
   * This part implements incremental searches for "/" and "?"
   * Jump to cmdline_not_changed when a character has been read but the command
   * line did not change. Then we only search and redraw if something changed in
   * the past.
   * Jump to cmdline_changed when the command line did change.
   * (Sorry for the goto's, I know it is ugly).
   */
  cmdline_not_changed:
  #ifdef FEAT_SEARCH_EXTRA
  	if (!incsearch_postponed)
  	    continue;
  #endif
  
  cmdline_changed:
  #ifdef FEAT_SEARCH_EXTRA
  	/*
  	 * 'incsearch' highlighting.
  	 */
  	if (p_is && !cmd_silent && (firstc == '/' || firstc == '?'))
  	{
  	    pos_T	end_pos;
  #ifdef FEAT_RELTIME
  	    proftime_T	tm;
  #endif
  
  	    /* if there is a character waiting, search and redraw later */
  	    if (char_avail())
  	    {
  		incsearch_postponed = TRUE;
  		continue;
  	    }
  	    incsearch_postponed = FALSE;
  	    curwin->w_cursor = old_cursor;  /* start at old position */
  
  	    /* If there is no command line, don't do anything */
  	    if (ccline.cmdlen == 0)
  		i = 0;
  	    else
  	    {
  		cursor_off();		/* so the user knows we're busy */
  		out_flush();
  		++emsg_off;    /* So it doesn't beep if bad expr */
  #ifdef FEAT_RELTIME
  		/* Set the time limit to half a second. */
  		profile_setlimit(500L, &tm);
  #endif
  		i = do_search(NULL, firstc, ccline.cmdbuff, count,
  			SEARCH_KEEP + SEARCH_OPT + SEARCH_NOOF + SEARCH_PEEK,
  #ifdef FEAT_RELTIME
  			&tm
  #else
  			NULL
  #endif
  			);
  		--emsg_off;
  		/* if interrupted while searching, behave like it failed */
  		if (got_int)
  		{
  		    (void)vpeekc();	/* remove <C-C> from input stream */
  		    got_int = FALSE;	/* don't abandon the command line */
  		    i = 0;
  		}
  		else if (char_avail())
  		    /* cancelled searching because a char was typed */
  		    incsearch_postponed = TRUE;
  	    }
  	    if (i != 0)
  		highlight_match = TRUE;		/* highlight position */
  	    else
  		highlight_match = FALSE;	/* remove highlight */
  
  	    /* first restore the old curwin values, so the screen is
  	     * positioned in the same way as the actual search command */
  	    curwin->w_leftcol = old_leftcol;
  	    curwin->w_topline = old_topline;
  # ifdef FEAT_DIFF
  	    curwin->w_topfill = old_topfill;
  # endif
  	    curwin->w_botline = old_botline;
  	    changed_cline_bef_curs();
  	    update_topline();
  
  	    if (i != 0)
  	    {
  		pos_T	    save_pos = curwin->w_cursor;
  
  		/*
  		 * First move cursor to end of match, then to the start.  This
  		 * moves the whole match onto the screen when 'nowrap' is set.
  		 */
  		curwin->w_cursor.lnum += search_match_lines;
  		curwin->w_cursor.col = search_match_endcol;
  		if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
  		{
  		    curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
  		    coladvance((colnr_T)MAXCOL);
  		}
  		validate_cursor();
  		end_pos = curwin->w_cursor;
  		curwin->w_cursor = save_pos;
  	    }
  	    else
  		end_pos = curwin->w_cursor; /* shutup gcc 4 */
  
  	    validate_cursor();
  # ifdef FEAT_WINDOWS
  	    /* May redraw the status line to show the cursor position. */
  	    if (p_ru && curwin->w_status_height > 0)
  		curwin->w_redr_status = TRUE;
  # endif
  
  	    save_cmdline(&save_ccline);
  	    update_screen(SOME_VALID);
  	    restore_cmdline(&save_ccline);
  
  	    /* Leave it at the end to make CTRL-R CTRL-W work. */
  	    if (i != 0)
  		curwin->w_cursor = end_pos;
  
  	    msg_starthere();
  	    redrawcmdline();
  	    did_incsearch = TRUE;
  	}
  #else /* FEAT_SEARCH_EXTRA */
  	;
  #endif
  
  #ifdef FEAT_RIGHTLEFT
  	if (cmdmsg_rl
  # ifdef FEAT_ARABIC
  		|| (p_arshape && !p_tbidi && enc_utf8)
  # endif
  		)
  	    /* Always redraw the whole command line to fix shaping and
  	     * right-left typing.  Not efficient, but it works. */
  	    redrawcmd();
  #endif
      }
  
  returncmd:
  
  #ifdef FEAT_RIGHTLEFT
      cmdmsg_rl = FALSE;
  #endif
  
  #ifdef FEAT_FKMAP
      cmd_fkmap = 0;
  #endif
  
      ExpandCleanup(&xpc);
  
  #ifdef FEAT_SEARCH_EXTRA
      if (did_incsearch)
      {
  	curwin->w_cursor = old_cursor;
  	curwin->w_curswant = old_curswant;
  	curwin->w_leftcol = old_leftcol;
  	curwin->w_topline = old_topline;
  # ifdef FEAT_DIFF
  	curwin->w_topfill = old_topfill;
  # endif
  	curwin->w_botline = old_botline;
  	highlight_match = FALSE;
  	validate_cursor();	/* needed for TAB */
  	redraw_later(SOME_VALID);
      }
  #endif
  
      if (ccline.cmdbuff != NULL)
      {
  	/*
  	 * Put line in history buffer (":" and "=" only when it was typed).
  	 */
  #ifdef FEAT_CMDHIST
  	if (ccline.cmdlen && firstc != NUL
  		&& (some_key_typed || histype == HIST_SEARCH))
  	{
  	    add_to_history(histype, ccline.cmdbuff, TRUE,
  				       histype == HIST_SEARCH ? firstc : NUL);
  	    if (firstc == ':')
  	    {
  		vim_free(new_last_cmdline);
  		new_last_cmdline = vim_strsave(ccline.cmdbuff);
  	    }
  	}
  #endif
  
  	if (gotesc)	    /* abandon command line */
  	{
  	    vim_free(ccline.cmdbuff);
  	    ccline.cmdbuff = NULL;
  	    if (msg_scrolled == 0)
  		compute_cmdrow();
  	    MSG("");
  	    redraw_cmdline = TRUE;
  	}
      }
  
      /*
       * If the screen was shifted up, redraw the whole screen (later).
       * If the line is too long, clear it, so ruler and shown command do
       * not get printed in the middle of it.
       */
      msg_check();
      msg_scroll = save_msg_scroll;
      redir_off = FALSE;
  
      /* When the command line was typed, no need for a wait-return prompt. */
      if (some_key_typed)
  	need_wait_return = FALSE;
  
      State = save_State;
  #ifdef USE_IM_CONTROL
      if (b_im_ptr != NULL && *b_im_ptr != B_IMODE_LMAP)
  	im_save_status(b_im_ptr);
      im_set_active(FALSE);
  #endif
  #ifdef FEAT_MOUSE
      setmouse();
  #endif
  #ifdef CURSOR_SHAPE
      ui_cursor_shape();		/* may show different cursor shape */
  #endif
  
      {
  	char_u *p = ccline.cmdbuff;
  
  	/* Make ccline empty, getcmdline() may try to use it. */
  	ccline.cmdbuff = NULL;
  	return p;
      }
  }
  
  #if (defined(FEAT_CRYPT) || defined(FEAT_EVAL)) || defined(PROTO)
  /*
   * Get a command line with a prompt.
   * This is prepared to be called recursively from getcmdline() (e.g. by
   * f_input() when evaluating an expression from CTRL-R =).
   * Returns the command line in allocated memory, or NULL.
   */
      char_u *
  getcmdline_prompt(firstc, prompt, attr, xp_context, xp_arg)
      int		firstc;
      char_u	*prompt;	/* command line prompt */
      int		attr;		/* attributes for prompt */
      int		xp_context;	/* type of expansion */
      char_u	*xp_arg;	/* user-defined expansion argument */
  {
      char_u		*s;
      struct cmdline_info	save_ccline;
      int			msg_col_save = msg_col;
  
      save_cmdline(&save_ccline);
      ccline.cmdprompt = prompt;
      ccline.cmdattr = attr;
  # ifdef FEAT_EVAL
      ccline.xp_context = xp_context;
      ccline.xp_arg = xp_arg;
      ccline.input_fn = (firstc == '@');
  # endif
      s = getcmdline(firstc, 1L, 0);
      restore_cmdline(&save_ccline);
      /* Restore msg_col, the prompt from input() may have changed it. */
      msg_col = msg_col_save;
  
      return s;
  }
  #endif
  
  /*
   * Return TRUE when the text must not be changed and we can't switch to
   * another window or buffer.  Used when editing the command line, evaluating
   * 'balloonexpr', etc.
   */
      int
  text_locked()
  {
  #ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
  	return TRUE;
  #endif
      return textlock != 0;
  }
  
  /*
   * Give an error message for a command that isn't allowed while the cmdline
   * window is open or editing the cmdline in another way.
   */
      void
  text_locked_msg()
  {
  #ifdef FEAT_CMDWIN
      if (cmdwin_type != 0)
  	EMSG(_(e_cmdwin));
      else
  #endif
  	EMSG(_(e_secure));
  }
  
  #if defined(FEAT_AUTOCMD) || defined(PROTO)
  /*
   * Check if "curbuf_lock" is set and return TRUE when it is and give an error
   * message.
   */
      int
  curbuf_locked()
  {
      if (curbuf_lock > 0)
      {
  	EMSG(_("E788: Not allowed to edit another buffer now"));
  	return TRUE;
      }
      return FALSE;
  }
  #endif
  
      static int
  cmdline_charsize(idx)
      int		idx;
  {
  #if defined(FEAT_CRYPT) || defined(FEAT_EVAL)
      if (cmdline_star > 0)	    /* showing '*', always 1 position */
  	return 1;
  #endif
      return ptr2cells(ccline.cmdbuff + idx);
  }
  
  /*
   * Compute the offset of the cursor on the command line for the prompt and
   * indent.
   */
      static void
  set_cmdspos()
  {
      if (ccline.cmdfirstc != NUL)
  	ccline.cmdspos = 1 + ccline.cmdindent;
      else
  	ccline.cmdspos = 0 + ccline.cmdindent;
  }
  
  /*
   * Compute the screen position for the cursor on the command line.
   */
      static void
  set_cmdspos_cursor()
  {
      int		i, m, c;
  
      set_cmdspos();
      if (KeyTyped)
      {
  	m = Columns * Rows;
  	if (m < 0)	/* overflow, Columns or Rows at weird value */
  	    m = MAXCOL;
      }
      else
  	m = MAXCOL;
      for (i = 0; i < ccline.cmdlen && i < ccline.cmdpos; ++i)
      {
  	c = cmdline_charsize(i);
  #ifdef FEAT_MBYTE
  	/* Count ">" for double-wide multi-byte char that doesn't fit. */
  	if (has_mbyte)
  	    correct_cmdspos(i, c);
  #endif
  	/* If the cmdline doesn't fit, show cursor on last visible char.
  	 * Don't move the cursor itself, so we can still append. */
  	if ((ccline.cmdspos += c) >= m)
  	{
  	    ccline.cmdspos -= c;
  	    break;
  	}
  #ifdef FEAT_MBYTE
  	if (has_mbyte)
  	    i += (*mb_ptr2len)(ccline.cmdbuff + i) - 1;
  #endif
      }
  }
  
  #ifdef FEAT_MBYTE
  /*
   * Check if the character at "idx", which is "cells" wide, is a multi-byte
   * character that doesn't fit, so that a ">" must be displayed.
   */
      static void
  correct_cmdspos(idx, cells)
      int		idx;
      int		cells;
  {
      if ((*mb_ptr2len)(ccline.cmdbuff + idx) > 1
  		&& (*mb_ptr2cells)(ccline.cmdbuff + idx) > 1
  		&& ccline.cmdspos % Columns + cells > Columns)
  	ccline.cmdspos++;
  }
  #endif
  
  /*
   * Get an Ex command line for the ":" command.
   */
  /* ARGSUSED */
      char_u *
  getexline(c, dummy, indent)
      int		c;		/* normally ':', NUL for ":append" */
      void	*dummy;		/* cookie not used */
      int		indent;		/* indent for inside conditionals */
  {
      /* When executing a register, remove ':' that's in front of each line. */
      if (exec_from_reg && vpeekc() == ':')
  	(void)vgetc();
      return getcmdline(c, 1L, indent);
  }
  
  /*
   * Get an Ex command line for Ex mode.
   * In Ex mode we only use the OS supplied line editing features and no
   * mappings or abbreviations.
   * Returns a string in allocated memory or NULL.
   */
  /* ARGSUSED */
      char_u *
  getexmodeline(promptc, dummy, indent)
      int		promptc;	/* normally ':', NUL for ":append" and '?' for
  				   :s prompt */
      void	*dummy;		/* cookie not used */
      int		indent;		/* indent for inside conditionals */
  {
      garray_T	line_ga;
      char_u	*pend;
      int		startcol = 0;
      int		c1 = 0;
      int		escaped = FALSE;	/* CTRL-V typed */
      int		vcol = 0;
      char_u	*p;
      int		prev_char;
  
      /* Switch cursor on now.  This avoids that it happens after the "\n", which
       * confuses the system function that computes tabstops. */
      cursor_on();
  
      /* always start in column 0; write a newline if necessary */
      compute_cmdrow();
      if ((msg_col || msg_didout) && promptc != '?')
  	msg_putchar('\n');
      if (promptc == ':')
      {
  	/* indent that is only displayed, not in the line itself */
  	if (p_prompt)
  	    msg_putchar(':');
  	while (indent-- > 0)
  	    msg_putchar(' ');
  	startcol = msg_col;
      }
  
      ga_init2(&line_ga, 1, 30);
  
      /* autoindent for :insert and :append is in the line itself */
      if (promptc <= 0)
      {
  	vcol = indent;
  	while (indent >= 8)
  	{
  	    ga_append(&line_ga, TAB);
  	    msg_puts((char_u *)"        ");
  	    indent -= 8;
  	}
  	while (indent-- > 0)
  	{
  	    ga_append(&line_ga, ' ');
  	    msg_putchar(' ');
  	}
      }
      ++no_mapping;
      ++allow_keys;
  
      /*
       * Get the line, one character at a time.
       */
      got_int = FALSE;
      while (!got_int)
      {
  	if (ga_grow(&line_ga, 40) == FAIL)
  	    break;
  	pend = (char_u *)line_ga.ga_data + line_ga.ga_len;
  
  	/* Get one character at a time.  Don't use inchar(), it can't handle
  	 * special characters. */
  	prev_char = c1;
  	c1 = vgetc();
  
  	/*
  	 * Handle line editing.
  	 * Previously this was left to the system, putting the terminal in
  	 * cooked mode, but then CTRL-D and CTRL-T can't be used properly.
  	 */
  	if (got_int)
  	{
  	    msg_putchar('\n');
  	    break;
  	}
  
  	if (!escaped)
  	{
  	    /* CR typed means "enter", which is NL */
  	    if (c1 == '\r')
  		c1 = '\n';
  
  	    if (c1 == BS || c1 == K_BS
  			  || c1 == DEL || c1 == K_DEL || c1 == K_KDEL)
  	    {
  		if (line_ga.ga_len > 0)
  		{
  		    --line_ga.ga_len;
  		    goto redraw;
  		}
  		continue;
  	    }
  
  	    if (c1 == Ctrl_U)
  	    {
  		msg_col = startcol;
  		msg_clr_eos();
  		line_ga.ga_len = 0;
  		continue;
  	    }
  
  	    if (c1 == Ctrl_T)
  	    {
  		p = (char_u *)line_ga.ga_data;
  		p[line_ga.ga_len] = NUL;
  		indent = get_indent_str(p, 8);
  		indent += curbuf->b_p_sw - indent % curbuf->b_p_sw;
  add_indent:
  		while (get_indent_str(p, 8) < indent)
  		{
  		    char_u *s = skipwhite(p);
  
  		    ga_grow(&line_ga, 1);
  		    mch_memmove(s + 1, s, line_ga.ga_len - (s - p) + 1);
  		    *s = ' ';
  		    ++line_ga.ga_len;
  		}
  redraw:
  		/* redraw the line */
  		msg_col = startcol;
  		vcol = 0;
  		for (p = (char_u *)line_ga.ga_data;
  			  p < (char_u *)line_ga.ga_data + line_ga.ga_len; ++p)
  		{
  		    if (*p == TAB)
  		    {
  			do
  			{
  			    msg_putchar(' ');
  			} while (++vcol % 8);
  		    }
  		    else
  		    {
  			msg_outtrans_len(p, 1);
  			vcol += char2cells(*p);
  		    }
  		}
  		msg_clr_eos();
  		windgoto(msg_row, msg_col);
  		continue;
  	    }
  
  	    if (c1 == Ctrl_D)
  	    {
  		/* Delete one shiftwidth. */
  		p = (char_u *)line_ga.ga_data;
  		if (prev_char == '0' || prev_char == '^')
  		{
  		    if (prev_char == '^')
  			ex_keep_indent = TRUE;
  		    indent = 0;
  		    p[--line_ga.ga_len] = NUL;
  		}
  		else
  		{
  		    p[line_ga.ga_len] = NUL;
  		    indent = get_indent_str(p, 8);
  		    --indent;
  		    indent -= indent % curbuf->b_p_sw;
  		}
  		while (get_indent_str(p, 8) > indent)
  		{
  		    char_u *s = skipwhite(p);
  
  		    mch_memmove(s - 1, s, line_ga.ga_len - (s - p) + 1);
  		    --line_ga.ga_len;
  		}
  		goto add_indent;
  	    }
  
  	    if (c1 == Ctrl_V || c1 == Ctrl_Q)
  	    {
  		escaped = TRUE;
  		continue;
  	    }
  
  	    /* Ignore special key codes: mouse movement, K_IGNORE, etc. */
  	    if (IS_SPECIAL(c1))
  		continue;
  	}
  
  	if (IS_SPECIAL(c1))
  	    c1 = '?';
  	((char_u *)line_ga.ga_data)[line_ga.ga_len] = c1;
  	if (c1 == '\n')
  	    msg_putchar('\n');
  	else if (c1 == TAB)
  	{
  	    /* Don't use chartabsize(), 'ts' can be different */
  	    do
  	    {
  		msg_putchar(' ');
  	    } while (++vcol % 8);
  	}
  	else
  	{
  	    msg_outtrans_len(
  		     ((char_u *)line_ga.ga_data) + line_ga.ga_len, 1);
  	    vcol += char2cells(c1);
  	}
  	++line_ga.ga_len;
  	escaped = FALSE;
  
  	windgoto(msg_row, msg_col);
  	pend = (char_u *)(line_ga.ga_data) + line_ga.ga_len;
  
  	/* we are done when a NL is entered, but not when it comes after a
  	 * backslash */
  	if (line_ga.ga_len > 0 && pend[-1] == '\n'
  		&& (line_ga.ga_len <= 1 || pend[-2] != '\\'))
  	{
  	    --line_ga.ga_len;
  	    --pend;
  	    *pend = NUL;
  	    break;
  	}
      }
  
      --no_mapping;
      --allow_keys;
  
      /* make following messages go to the next line */
      msg_didout = FALSE;
      msg_col = 0;
      if (msg_row < Rows - 1)
  	++msg_row;
      emsg_on_display = FALSE;		/* don't want ui_delay() */
  
      if (got_int)
  	ga_clear(&line_ga);
  
      return (char_u *)line_ga.ga_data;
  }
  
  # if defined(MCH_CURSOR_SHAPE) || defined(FEAT_GUI) \
  	|| defined(FEAT_MOUSESHAPE) || defined(PROTO)
  /*
   * Return TRUE if ccline.overstrike is on.
   */
      int
  cmdline_overstrike()
  {
      return ccline.overstrike;
  }
  
  /*
   * Return TRUE if the cursor is at the end of the cmdline.
   */
      int
  cmdline_at_end()
  {
      return (ccline.cmdpos >= ccline.cmdlen);
  }
  #endif
  
  #if (defined(FEAT_XIM) && (defined(FEAT_GUI_GTK))) || defined(PROTO)
  /*
   * Return the virtual column number at the current cursor position.
   * This is used by the IM code to obtain the start of the preedit string.
   */
      colnr_T
  cmdline_getvcol_cursor()
  {
      if (ccline.cmdbuff == NULL || ccline.cmdpos > ccline.cmdlen)
  	return MAXCOL;
  
  # ifdef FEAT_MBYTE
      if (has_mbyte)
      {
  	colnr_T	col;
  	int	i = 0;
  
  	for (col = 0; i < ccline.cmdpos; ++col)
  	    i += (*mb_ptr2len)(ccline.cmdbuff + i);
  
  	return col;
      }
      else
  # endif
  	return ccline.cmdpos;
  }
  #endif
  
  #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
  /*
   * If part of the command line is an IM preedit string, redraw it with
   * IM feedback attributes.  The cursor position is restored after drawing.
   */
      static void
  redrawcmd_preedit()
  {
      if ((State & CMDLINE)
  	    && xic != NULL
  	    /* && im_get_status()  doesn't work when using SCIM */
  	    && !p_imdisable
  	    && im_is_preediting())
      {
  	int	cmdpos = 0;
  	int	cmdspos;
  	int	old_row;
  	int	old_col;
  	colnr_T	col;
  
  	old_row = msg_row;
  	old_col = msg_col;
  	cmdspos = ((ccline.cmdfirstc != NUL) ? 1 : 0) + ccline.cmdindent;
  
  # ifdef FEAT_MBYTE
  	if (has_mbyte)
  	{
  	    for (col = 0; col < preedit_start_col
  			  && cmdpos < ccline.cmdlen; ++col)
  	    {
  		cmdspos += (*mb_ptr2cells)(ccline.cmdbuff + cmdpos);
  		cmdpos  += (*mb_ptr2len)(ccline.cmdbuff + cmdpos);
  	    }
  	}
  	else
  # endif
  	{
  	    cmdspos += preedit_start_col;
  	    cmdpos  += preedit_start_col;
  	}
  
  	msg_row = cmdline_row + (cmdspos / (int)Columns);
  	msg_col = cmdspos % (int)Columns;
  	if (msg_row >= Rows)
  	    msg_row = Rows - 1;
  
  	for (col = 0; cmdpos < ccline.cmdlen; ++col)
  	{
  	    int char_len;
  	    int char_attr;
  
  	    char_attr = im_get_feedback_attr(col);
  	    if (char_attr < 0)
  		break; /* end of preedit string */
  
  # ifdef FEAT_MBYTE
  	    if (has_mbyte)
  		char_len = (*mb_ptr2len)(ccline.cmdbuff + cmdpos);
  	    else
  # endif
  		char_len = 1;
  
  	    msg_outtrans_len_attr(ccline.cmdbuff + cmdpos, char_len, char_attr);
  	    cmdpos += char_len;
  	}
  
  	msg_row = old_row;
  	msg_col = old_col;
      }
  }
  #endif /* FEAT_XIM && FEAT_GUI_GTK */
  
  /*
   * Allocate a new command line buffer.
   * Assigns the new buffer to ccline.cmdbuff and ccline.cmdbufflen.
   * Returns the new value of ccline.cmdbuff and ccline.cmdbufflen.
   */
      static void
  alloc_cmdbuff(len)
      int	    len;
  {
      /*
       * give some extra space to avoid having to allocate all the time
       */
      if (len < 80)
  	len = 100;
      else
  	len += 20;
  
      ccline.cmdbuff = alloc(len);    /* caller should check for out-of-memory */
      ccline.cmdbufflen = len;
  }
  
  /*
   * Re-allocate the command line to length len + something extra.
   * return FAIL for failure, OK otherwise
   */
      static int
  realloc_cmdbuff(len)
      int	    len;
  {
      char_u	*p;
  
      p = ccline.cmdbuff;
      alloc_cmdbuff(len);			/* will get some more */
      if (ccline.cmdbuff == NULL)		/* out of memory */
      {
  	ccline.cmdbuff = p;		/* keep the old one */
  	return FAIL;
      }
      mch_memmove(ccline.cmdbuff, p, (size_t)ccline.cmdlen + 1);
      vim_free(p);
      return OK;
  }
  
  #if defined(FEAT_ARABIC) || defined(PROTO)
  static char_u	*arshape_buf = NULL;
  
  # if defined(EXITFREE) || defined(PROTO)
      void
  free_cmdline_buf()
  {
      vim_free(arshape_buf);
  }
  # endif
  #endif
  
  /*
   * Draw part of the cmdline at the current cursor position.  But draw stars
   * when cmdline_star is TRUE.
   */
      static void
  draw_cmdline(start, len)
      int		start;
      int		len;
  {
  #if defined(FEAT_CRYPT) || defined(FEAT_EVAL)
      int		i;
  
      if (cmdline_star > 0)
  	for (i = 0; i < len; ++i)
  	{
  	    msg_putchar('*');
  # ifdef FEAT_MBYTE
  	    if (has_mbyte)
  		i += (*mb_ptr2len)(ccline.cmdbuff + start + i) - 1;
  # endif
  	}
      else
  #endif
  #ifdef FEAT_ARABIC
  	if (p_arshape && !p_tbidi && enc_utf8 && len > 0)
      {
  	static int	buflen = 0;
  	char_u		*p;
  	int		j;
  	int		newlen = 0;
  	int		mb_l;
  	int		pc, pc1 = 0;
  	int		prev_c = 0;
  	int		prev_c1 = 0;
  	int		u8c;
  	int		u8cc[MAX_MCO];
  	int		nc = 0;
  
  	/*
  	 * Do arabic shaping into a temporary buffer.  This is very
  	 * inefficient!
  	 */
  	if (len * 2 + 2 > buflen)
  	{
  	    /* Re-allocate the buffer.  We keep it around to avoid a lot of
  	     * alloc()/free() calls. */
  	    vim_free(arshape_buf);
  	    buflen = len * 2 + 2;
  	    arshape_buf = alloc(buflen);
  	    if (arshape_buf == NULL)
  		return;	/* out of memory */
  	}
  
  	if (utf_iscomposing(utf_ptr2char(ccline.cmdbuff + start)))
  	{
  	    /* Prepend a space to draw the leading composing char on. */
  	    arshape_buf[0] = ' ';
  	    newlen = 1;
  	}
  
  	for (j = start; j < start + len; j += mb_l)
  	{
  	    p = ccline.cmdbuff + j;
  	    u8c = utfc_ptr2char_len(p, u8cc, start + len - j);
  	    mb_l = utfc_ptr2len_len(p, start + len - j);
  	    if (ARABIC_CHAR(u8c))
  	    {
  		/* Do Arabic shaping. */
  		if (cmdmsg_rl)
  		{
  		    /* displaying from right to left */
  		    pc = prev_c;
  		    pc1 = prev_c1;
  		    prev_c1 = u8cc[0];
  		    if (j + mb_l >= start + len)
  			nc = NUL;
  		    else
  			nc = utf_ptr2char(p + mb_l);
  		}
  		else
  		{
  		    /* displaying from left to right */
  		    if (j + mb_l >= start + len)
  			pc = NUL;
  		    else
  		    {
  			int	pcc[MAX_MCO];
  
  			pc = utfc_ptr2char_len(p + mb_l, pcc,
  						      start + len - j - mb_l);
  			pc1 = pcc[0];
  		    }
  		    nc = prev_c;
  		}
  		prev_c = u8c;
  
  		u8c = arabic_shape(u8c, NULL, &u8cc[0], pc, pc1, nc);
  
  		newlen += (*mb_char2bytes)(u8c, arshape_buf + newlen);
  		if (u8cc[0] != 0)
  		{
  		    newlen += (*mb_char2bytes)(u8cc[0], arshape_buf + newlen);
  		    if (u8cc[1] != 0)
  			newlen += (*mb_char2bytes)(u8cc[1],
  							arshape_buf + newlen);
  		}
  	    }
  	    else
  	    {
  		prev_c = u8c;
  		mch_memmove(arshape_buf + newlen, p, mb_l);
  		newlen += mb_l;
  	    }
  	}
  
  	msg_outtrans_len(arshape_buf, newlen);
      }
      else
  #endif
  	msg_outtrans_len(ccline.cmdbuff + start, len);
  }
  
  /*
   * Put a character on the command line.  Shifts the following text to the
   * right when "shift" is TRUE.  Used for CTRL-V, CTRL-K, etc.
   * "c" must be printable (fit in one display cell)!
   */
      void
  putcmdline(c, shift)
      int		c;
      int		shift;
  {
      if (cmd_silent)
  	return;
      msg_no_more = TRUE;
      msg_putchar(c);
      if (shift)
  	draw_cmdline(ccline.cmdpos, ccline.cmdlen - ccline.cmdpos);
      msg_no_more = FALSE;
      cursorcmd();
  }
  
  /*
   * Undo a putcmdline(c, FALSE).
   */
      void
  unputcmdline()
  {
      if (cmd_silent)
  	return;
      msg_no_more = TRUE;
      if (ccline.cmdlen == ccline.cmdpos)
  	msg_putchar(' ');
      else
  	draw_cmdline(ccline.cmdpos, 1);
      msg_no_more = FALSE;
      cursorcmd();
  }
  
  /*
   * Put the given string, of the given length, onto the command line.
   * If len is -1, then STRLEN() is used to calculate the length.
   * If 'redraw' is TRUE then the new part of the command line, and the remaining
   * part will be redrawn, otherwise it will not.  If this function is called
   * twice in a row, then 'redraw' should be FALSE and redrawcmd() should be
   * called afterwards.
   */
      int
  put_on_cmdline(str, len, redraw)
      char_u	*str;
      int		len;
      int		redraw;
  {
      int		retval;
      int		i;
      int		m;
      int		c;
  
      if (len < 0)
  	len = (int)STRLEN(str);
  
      /* Check if ccline.cmdbuff needs to be longer */
      if (ccline.cmdlen + len + 1 >= ccline.cmdbufflen)
  	retval = realloc_cmdbuff(ccline.cmdlen + len);
      else
  	retval = OK;
      if (retval == OK)
      {
  	if (!ccline.overstrike)
  	{
  	    mch_memmove(ccline.cmdbuff + ccline.cmdpos + len,
  					       ccline.cmdbuff + ccline.cmdpos,
  				     (size_t)(ccline.cmdlen - ccline.cmdpos));
  	    ccline.cmdlen += len;
  	}
  	else
  	{
  #ifdef FEAT_MBYTE
  	    if (has_mbyte)
  	    {
  		/* Count nr of characters in the new string. */
  		m = 0;
  		for (i = 0; i < len; i += (*mb_ptr2len)(str + i))
  		    ++m;
  		/* Count nr of bytes in cmdline that are overwritten by these
  		 * characters. */
  		for (i = ccline.cmdpos; i < ccline.cmdlen && m > 0;
  				 i += (*mb_ptr2len)(ccline.cmdbuff + i))
  		    --m;
  		if (i < ccline.cmdlen)
  		{
  		    mch_memmove(ccline.cmdbuff + ccline.cmdpos + len,
  			    ccline.cmdbuff + i, (size_t)(ccline.cmdlen - i));
  		    ccline.cmdlen += ccline.cmdpos + len - i;
  		}
  		else
  		    ccline.cmdlen = ccline.cmdpos + len;
  	    }
  	    else
  #endif
  	    if (ccline.cmdpos + len > ccline.cmdlen)
  		ccline.cmdlen = ccline.cmdpos + len;
  	}
  	mch_memmove(ccline.cmdbuff + ccline.cmdpos, str, (size_t)len);
  	ccline.cmdbuff[ccline.cmdlen] = NUL;
  
  #ifdef FEAT_MBYTE
  	if (enc_utf8)
  	{
  	    /* When the inserted text starts with a composing character,
  	     * backup to the character before it.  There could be two of them.
  	     */
  	    i = 0;
  	    c = utf_ptr2char(ccline.cmdbuff + ccline.cmdpos);
  	    while (ccline.cmdpos > 0 && utf_iscomposing(c))
  	    {
  		i = (*mb_head_off)(ccline.cmdbuff,
  				      ccline.cmdbuff + ccline.cmdpos - 1) + 1;
  		ccline.cmdpos -= i;
  		len += i;
  		c = utf_ptr2char(ccline.cmdbuff + ccline.cmdpos);
  	    }
  # ifdef FEAT_ARABIC
  	    if (i == 0 && ccline.cmdpos > 0 && arabic_maycombine(c))
  	    {
  		/* Check the previous character for Arabic combining pair. */
  		i = (*mb_head_off)(ccline.cmdbuff,
  				      ccline.cmdbuff + ccline.cmdpos - 1) + 1;
  		if (arabic_combine(utf_ptr2char(ccline.cmdbuff
  						     + ccline.cmdpos - i), c))
  		{
  		    ccline.cmdpos -= i;
  		    len += i;
  		}
  		else
  		    i = 0;
  	    }
  # endif
  	    if (i != 0)
  	    {
  		/* Also backup the cursor position. */
  		i = ptr2cells(ccline.cmdbuff + ccline.cmdpos);
  		ccline.cmdspos -= i;
  		msg_col -= i;
  		if (msg_col < 0)
  		{
  		    msg_col += Columns;
  		    --msg_row;
  		}
  	    }
  	}
  #endif
  
  	if (redraw && !cmd_silent)
  	{
  	    msg_no_more = TRUE;
  	    i = cmdline_row;
  	    draw_cmdline(ccline.cmdpos, ccline.cmdlen - ccline.cmdpos);
  	    /* Avoid clearing the rest of the line too often. */
  	    if (cmdline_row != i || ccline.overstrike)
  		msg_clr_eos();
  	    msg_no_more = FALSE;
  	}
  #ifdef FEAT_FKMAP
  	/*
  	 * If we are in Farsi command mode, the character input must be in
  	 * Insert mode. So do not advance the cmdpos.
  	 */
  	if (!cmd_fkmap)
  #endif
  	{
  	    if (KeyTyped)
  	    {
  		m = Columns * Rows;
  		if (m < 0)	/* overflow, Columns or Rows at weird value */
  		    m = MAXCOL;
  	    }
  	    else
  		m = MAXCOL;
  	    for (i = 0; i < len; ++i)
  	    {
  		c = cmdline_charsize(ccline.cmdpos);
  #ifdef FEAT_MBYTE
  		/* count ">" for a double-wide char that doesn't fit. */
  		if (has_mbyte)
  		    correct_cmdspos(ccline.cmdpos, c);
  #endif
  		/* Stop cursor at the end of the screen, but do increment the
  		 * insert position, so that entering a very long command
  		 * works, even though you can't see it. */
  		if (ccline.cmdspos + c < m)
  		    ccline.cmdspos += c;
  #ifdef FEAT_MBYTE
  		if (has_mbyte)
  		{
  		    c = (*mb_ptr2len)(ccline.cmdbuff + ccline.cmdpos) - 1;
  		    if (c > len - i - 1)
  			c = len - i - 1;
  		    ccline.cmdpos += c;
  		    i += c;
  		}
  #endif
  		++ccline.cmdpos;
  	    }
  	}
      }
      if (redraw)
  	msg_check();
      return retval;
  }
  
  static struct cmdline_info  prev_ccline;
  static int		    prev_ccline_used = FALSE;
  
  /*
   * Save ccline, because obtaining the "=" register may execute "normal :cmd"
   * and overwrite it.  But get_cmdline_str() may need it, thus make it
   * available globally in prev_ccline.
   */
      static void
  save_cmdline(ccp)
      struct cmdline_info *ccp;
  {
      if (!prev_ccline_used)
      {
  	vim_memset(&prev_ccline, 0, sizeof(struct cmdline_info));
  	prev_ccline_used = TRUE;
      }
      *ccp = prev_ccline;
      prev_ccline = ccline;
      ccline.cmdbuff = NULL;
      ccline.cmdprompt = NULL;
  }
  
  /*
   * Restore ccline after it has been saved with save_cmdline().
   */
      static void
  restore_cmdline(ccp)
      struct cmdline_info *ccp;
  {
      ccline = prev_ccline;
      prev_ccline = *ccp;
  }
  
  #if defined(FEAT_EVAL) || defined(PROTO)
  /*
   * Save the command line into allocated memory.  Returns a pointer to be
   * passed to restore_cmdline_alloc() later.
   * Returns NULL when failed.
   */
      char_u *
  save_cmdline_alloc()
  {
      struct cmdline_info *p;
  
      p = (struct cmdline_info *)alloc((unsigned)sizeof(struct cmdline_info));
      if (p != NULL)
  	save_cmdline(p);
      return (char_u *)p;
  }
  
  /*
   * Restore the command line from the return value of save_cmdline_alloc().
   */
      void
  restore_cmdline_alloc(p)
      char_u  *p;
  {
      if (p != NULL)
      {
  	restore_cmdline((struct cmdline_info *)p);
  	vim_free(p);
      }
  }
  #endif
  
  /*
   * paste a yank register into the command line.
   * used by CTRL-R command in command-line mode
   * insert_reg() can't be used here, because special characters from the
   * register contents will be interpreted as commands.
   *
   * return FAIL for failure, OK otherwise
   */
      static int
  cmdline_paste(regname, literally, remcr)
      int regname;
      int literally;	/* Insert text literally instead of "as typed" */
      int remcr;		/* remove trailing CR */
  {
      long		i;
      char_u		*arg;
      char_u		*p;
      int			allocated;
      struct cmdline_info	save_ccline;
  
      /* check for valid regname; also accept special characters for CTRL-R in
       * the command line */
      if (regname != Ctrl_F && regname != Ctrl_P && regname != Ctrl_W
  	    && regname != Ctrl_A && !valid_yank_reg(regname, FALSE))
  	return FAIL;
  
      /* A register containing CTRL-R can cause an endless loop.  Allow using
       * CTRL-C to break the loop. */
      line_breakcheck();
      if (got_int)
  	return FAIL;
  
  #ifdef FEAT_CLIPBOARD
      regname = may_get_selection(regname);
  #endif
  
      /* Need to save and restore ccline.  And set "textlock" to avoid nasty
       * things like going to another buffer when evaluating an expression. */
      save_cmdline(&save_ccline);
      ++textlock;
      i = get_spec_reg(regname, &arg, &allocated, TRUE);
      --textlock;
      restore_cmdline(&save_ccline);
  
      if (i)
      {
  	/* Got the value of a special register in "arg". */
  	if (arg == NULL)
  	    return FAIL;
  
  	/* When 'incsearch' is set and CTRL-R CTRL-W used: skip the duplicate
  	 * part of the word. */
  	p = arg;
  	if (p_is && regname == Ctrl_W)
  	{
  	    char_u  *w;
  	    int	    len;
  
  	    /* Locate start of last word in the cmd buffer. */
  	    for (w = ccline.cmdbuff + ccline.cmdlen; w > ccline.cmdbuff; )
  	    {
  #ifdef FEAT_MBYTE
  		if (has_mbyte)
  		{
  		    len = (*mb_head_off)(ccline.cmdbuff, w - 1) + 1;
  		    if (!vim_iswordc(mb_ptr2char(w - len)))
  			break;
  		    w -= len;
  		}
  		else
  #endif
  		{
  		    if (!vim_iswordc(w[-1]))
  			break;
  		    --w;
  		}
  	    }
  	    len = (int)((ccline.cmdbuff + ccline.cmdlen) - w);
  	    if (p_ic ? STRNICMP(w, arg, len) == 0 : STRNCMP(w, arg, len) == 0)
  		p += len;
  	}
  
  	cmdline_paste_str(p, literally);
  	if (allocated)
  	    vim_free(arg);
  	return OK;
      }
  
      return cmdline_paste_reg(regname, literally, remcr);
  }
  
  /*
   * Put a string on the command line.
   * When "literally" is TRUE, insert literally.
   * When "literally" is FALSE, insert as typed, but don't leave the command
   * line.
   */
      void
  cmdline_paste_str(s, literally)
      char_u	*s;
      int		literally;
  {
      int		c, cv;
  
      if (literally)
  	put_on_cmdline(s, -1, TRUE);
      else
  	while (*s != NUL)
  	{
  	    cv = *s;
  	    if (cv == Ctrl_V && s[1])
  		++s;
  #ifdef FEAT_MBYTE
  	    if (has_mbyte)
  		c = mb_cptr2char_adv(&s);
  	    else
  #endif
  		c = *s++;
  	    if (cv == Ctrl_V || c == ESC || c == Ctrl_C || c == CAR || c == NL
  #ifdef UNIX
  		    || c == intr_char
  #endif
  		    || (c == Ctrl_BSL && *s == Ctrl_N))
  		stuffcharReadbuff(Ctrl_V);
  	    stuffcharReadbuff(c);
  	}
  }
  
  #ifdef FEAT_WILDMENU
  /*
   * Delete characters on the command line, from "from" to the current
   * position.
   */
      static void
  cmdline_del(from)
      int from;
  {
      mch_memmove(ccline.cmdbuff + from, ccline.cmdbuff + ccline.cmdpos,
  	    (size_t)(ccline.cmdlen - ccline.cmdpos + 1));
      ccline.cmdlen -= ccline.cmdpos - from;
      ccline.cmdpos = from;
  }
  #endif
  
  /*
   * this function is called when the screen size changes and with incremental
   * search
   */
      void
  redrawcmdline()
  {
      if (cmd_silent)
  	return;
      need_wait_return = FALSE;
      compute_cmdrow();
      redrawcmd();
      cursorcmd();
  }
  
      static void
  redrawcmdprompt()
  {
      int		i;
  
      if (cmd_silent)
  	return;
      if (ccline.cmdfirstc != NUL)
  	msg_putchar(ccline.cmdfirstc);
      if (ccline.cmdprompt != NULL)
      {
  	msg_puts_attr(ccline.cmdprompt, ccline.cmdattr);
  	ccline.cmdindent = msg_col + (msg_row - cmdline_row) * Columns;
  	/* do the reverse of set_cmdspos() */
  	if (ccline.cmdfirstc != NUL)
  	    --ccline.cmdindent;
      }
      else
  	for (i = ccline.cmdindent; i > 0; --i)
  	    msg_putchar(' ');
  }
  
  /*
   * Redraw what is currently on the command line.
   */
      void
  redrawcmd()
  {
      if (cmd_silent)
  	return;
  
      /* when 'incsearch' is set there may be no command line while redrawing */
      if (ccline.cmdbuff == NULL)
      {
  	windgoto(cmdline_row, 0);
  	msg_clr_eos();
  	return;
      }
  
      msg_start();
      redrawcmdprompt();
  
      /* Don't use more prompt, truncate the cmdline if it doesn't fit. */
      msg_no_more = TRUE;
      draw_cmdline(0, ccline.cmdlen);
      msg_clr_eos();
      msg_no_more = FALSE;
  
      set_cmdspos_cursor();
  
      /*
       * An emsg() before may have set msg_scroll. This is used in normal mode,
       * in cmdline mode we can reset them now.
       */
      msg_scroll = FALSE;		/* next message overwrites cmdline */
  
      /* Typing ':' at the more prompt may set skip_redraw.  We don't want this
       * in cmdline mode */
      skip_redraw = FALSE;
  }
  
      void
  compute_cmdrow()
  {
      if (exmode_active || msg_scrolled != 0)
  	cmdline_row = Rows - 1;
      else
  	cmdline_row = W_WINROW(lastwin) + lastwin->w_height
  						   + W_STATUS_HEIGHT(lastwin);
  }
  
      static void
  cursorcmd()
  {
      if (cmd_silent)
  	return;
  
  #ifdef FEAT_RIGHTLEFT
      if (cmdmsg_rl)
      {
  	msg_row = cmdline_row  + (ccline.cmdspos / (int)(Columns - 1));
  	msg_col = (int)Columns - (ccline.cmdspos % (int)(Columns - 1)) - 1;
  	if (msg_row <= 0)
  	    msg_row = Rows - 1;
      }
      else
  #endif
      {
  	msg_row = cmdline_row + (ccline.cmdspos / (int)Columns);
  	msg_col = ccline.cmdspos % (int)Columns;
  	if (msg_row >= Rows)
  	    msg_row = Rows - 1;
      }
  
      windgoto(msg_row, msg_col);
  #if defined(FEAT_XIM) && defined(FEAT_GUI_GTK)
      redrawcmd_preedit();
  #endif
  #ifdef MCH_CURSOR_SHAPE
      mch_update_cursor();
  #endif
  }
  
      void
  gotocmdline(clr)
      int		    clr;
  {
      msg_start();
  #ifdef FEAT_RIGHTLEFT
      if (cmdmsg_rl)
  	msg_col = Columns - 1;
      else
  #endif
  	msg_col = 0;	    /* always start in column 0 */
      if (clr)		    /* clear the bottom line(s) */
  	msg_clr_eos();	    /* will reset clear_cmdline */
      windgoto(cmdline_row, 0);
  }
  
  /*
   * Check the word in front of the cursor for an abbreviation.
   * Called when the non-id character "c" has been entered.
   * When an abbreviation is recognized it is removed from the text with
   * backspaces and the replacement string is inserted, followed by "c".
   */
      static int
  ccheck_abbr(c)
      int c;
  {
      if (p_paste || no_abbr)	    /* no abbreviations or in paste mode */
  	return FALSE;
  
      return check_abbr(c, ccline.cmdbuff, ccline.cmdpos, 0);
  }
  
  /*
   * Return FAIL if this is not an appropriate context in which to do
   * completion of anything, return OK if it is (even if there are no matches).
   * For the caller, this means that the character is just passed through like a
   * normal character (instead of being expanded).  This allows :s/^I^D etc.
   */
      static int
  nextwild(xp, type, options)
      expand_T	*xp;
      int		type;
      int		options;	/* extra options for ExpandOne() */
  {
      int		i, j;
      char_u	*p1;
      char_u	*p2;
      int		oldlen;
      int		difflen;
      int		v;
  
      if (xp->xp_numfiles == -1)
      {
  	set_expand_context(xp);
  	cmd_showtail = expand_showtail(xp);
      }
  
      if (xp->xp_context == EXPAND_UNSUCCESSFUL)
      {
  	beep_flush();
  	return OK;  /* Something illegal on command line */
      }
      if (xp->xp_context == EXPAND_NOTHING)
      {
  	/* Caller can use the character as a normal char instead */
  	return FAIL;
      }
  
      MSG_PUTS("...");	    /* show that we are busy */
      out_flush();
  
      i = (int)(xp->xp_pattern - ccline.cmdbuff);
      oldlen = ccline.cmdpos - i;
  
      if (type == WILD_NEXT || type == WILD_PREV)
      {
  	/*
  	 * Get next/previous match for a previous expanded pattern.
  	 */
  	p2 = ExpandOne(xp, NULL, NULL, 0, type);
      }
      else
      {
  	/*
  	 * Translate string into pattern and expand it.
  	 */
  	if ((p1 = addstar(&ccline.cmdbuff[i], oldlen, xp->xp_context)) == NULL)
  	    p2 = NULL;
  	else
  	{
  	    p2 = ExpandOne(xp, p1, vim_strnsave(&ccline.cmdbuff[i], oldlen),
  		    WILD_HOME_REPLACE|WILD_ADD_SLASH|WILD_SILENT|WILD_ESCAPE
  							      |options, type);
  	    vim_free(p1);
  	    /* longest match: make sure it is not shorter (happens with :help */
  	    if (p2 != NULL && type == WILD_LONGEST)
  	    {
  		for (j = 0; j < oldlen; ++j)
  		     if (ccline.cmdbuff[i + j] == '*'
  			     || ccline.cmdbuff[i + j] == '?')
  			 break;
  		if ((int)STRLEN(p2) < j)
  		{
  		    vim_free(p2);
  		    p2 = NULL;
  		}
  	    }
  	}
      }
  
      if (p2 != NULL && !got_int)
      {
  	difflen = (int)STRLEN(p2) - oldlen;
  	if (ccline.cmdlen + difflen > ccline.cmdbufflen - 4)
  	{
  	    v = realloc_cmdbuff(ccline.cmdlen + difflen);
  	    xp->xp_pattern = ccline.cmdbuff + i;
  	}
  	else
  	    v = OK;
  	if (v == OK)
  	{
  	    mch_memmove(&ccline.cmdbuff[ccline.cmdpos + difflen],
  		    &ccline.cmdbuff[ccline.cmdpos],
  		    (size_t)(ccline.cmdlen - ccline.cmdpos + 1));
  	    mch_memmove(&ccline.cmdbuff[i], p2, STRLEN(p2));
  	    ccline.cmdlen += difflen;
  	    ccline.cmdpos += difflen;
  	}
      }
      vim_free(p2);
  
      redrawcmd();
      cursorcmd();
  
      /* When expanding a ":map" command and no matches are found, assume that
       * the key is supposed to be inserted literally */
      if (xp->xp_context == EXPAND_MAPPINGS && p2 == NULL)
  	return FAIL;
  
      if (xp->xp_numfiles <= 0 && p2 == NULL)
  	beep_flush();
      else if (xp->xp_numfiles == 1)
  	/* free expanded pattern */
  	(void)ExpandOne(xp, NULL, NULL, 0, WILD_FREE);
  
      return OK;
  }
  
  /*
   * Do wildcard expansion on the string 'str'.
   * Chars that should not be expanded must be preceded with a backslash.
   * Return a pointer to allocated memory containing the new string.
   * Return NULL for failure.
   *
   * "orig" is the originally expanded string, copied to allocated memory.  It
   * should either be kept in orig_save or freed.  When "mode" is WILD_NEXT or
   * WILD_PREV "orig" should be NULL.
   *
   * Results are cached in xp->xp_files and xp->xp_numfiles, except when "mode"
   * is WILD_EXPAND_FREE or WILD_ALL.
   *
   * mode = WILD_FREE:	    just free previously expanded matches
   * mode = WILD_EXPAND_FREE: normal expansion, do not keep matches
   * mode = WILD_EXPAND_KEEP: normal expansion, keep matches
   * mode = WILD_NEXT:	    use next match in multiple match, wrap to first
   * mode = WILD_PREV:	    use previous match in multiple match, wrap to first
   * mode = WILD_ALL:	    return all matches concatenated
   * mode = WILD_LONGEST:	    return longest matched part
   *
   * options = WILD_LIST_NOTFOUND:    list entries without a match
   * options = WILD_HOME_REPLACE:	    do home_replace() for buffer names
   * options = WILD_USE_NL:	    Use '\n' for WILD_ALL
   * options = WILD_NO_BEEP:	    Don't beep for multiple matches
   * options = WILD_ADD_SLASH:	    add a slash after directory names
   * options = WILD_KEEP_ALL:	    don't remove 'wildignore' entries
   * options = WILD_SILENT:	    don't print warning messages
   * options = WILD_ESCAPE:	    put backslash before special chars
   *
   * The variables xp->xp_context and xp->xp_backslash must have been set!
   */
      char_u *
  ExpandOne(xp, str, orig, options, mode)
      expand_T	*xp;
      char_u	*str;
      char_u	*orig;	    /* allocated copy of original of expanded string */
      int		options;
      int		mode;
  {
      char_u	*ss = NULL;
      static int	findex;
      static char_u *orig_save = NULL;	/* kept value of orig */
      int		orig_saved = FALSE;
      int		i;
      long_u	len;
      int		non_suf_match;		/* number without matching suffix */
  
      /*
       * first handle the case of using an old match
       */
      if (mode == WILD_NEXT || mode == WILD_PREV)
      {
  	if (xp->xp_numfiles > 0)
  	{
  	    if (mode == WILD_PREV)
  	    {
  		if (findex == -1)
  		    findex = xp->xp_numfiles;
  		--findex;
  	    }
  	    else    /* mode == WILD_NEXT */
  		++findex;
  
  	    /*
  	     * When wrapping around, return the original string, set findex to
  	     * -1.
  	     */
  	    if (findex < 0)
  	    {
  		if (orig_save == NULL)
  		    findex = xp->xp_numfiles - 1;
  		else
  		    findex = -1;
  	    }
  	    if (findex >= xp->xp_numfiles)
  	    {
  		if (orig_save == NULL)
  		    findex = 0;
  		else
  		    findex = -1;
  	    }
  #ifdef FEAT_WILDMENU
  	    if (p_wmnu)
  		win_redr_status_matches(xp, xp->xp_numfiles, xp->xp_files,
  							findex, cmd_showtail);
  #endif
  	    if (findex == -1)
  		return vim_strsave(orig_save);
  	    return vim_strsave(xp->xp_files[findex]);
  	}
  	else
  	    return NULL;
      }
  
      /* free old names */
      if (xp->xp_numfiles != -1 && mode != WILD_ALL && mode != WILD_LONGEST)
      {
  	FreeWild(xp->xp_numfiles, xp->xp_files);
  	xp->xp_numfiles = -1;
  	vim_free(orig_save);
  	orig_save = NULL;
      }
      findex = 0;
  
      if (mode == WILD_FREE)	/* only release file name */
  	return NULL;
  
      if (xp->xp_numfiles == -1)
      {
  	vim_free(orig_save);
  	orig_save = orig;
  	orig_saved = TRUE;
  
  	/*
  	 * Do the expansion.
  	 */
  	if (ExpandFromContext(xp, str, &xp->xp_numfiles, &xp->xp_files,
  							     options) == FAIL)
  	{
  #ifdef FNAME_ILLEGAL
  	    /* Illegal file name has been silently skipped.  But when there
  	     * are wildcards, the real problem is that there was no match,
  	     * causing the pattern to be added, which has illegal characters.
  	     */
  	    if (!(options & WILD_SILENT) && (options & WILD_LIST_NOTFOUND))
  		EMSG2(_(e_nomatch2), str);
  #endif
  	}
  	else if (xp->xp_numfiles == 0)
  	{
  	    if (!(options & WILD_SILENT))
  		EMSG2(_(e_nomatch2), str);
  	}
  	else
  	{
  	    /* Escape the matches for use on the command line. */
  	    ExpandEscape(xp, str, xp->xp_numfiles, xp->xp_files, options);
  
  	    /*
  	     * Check for matching suffixes in file names.
  	     */
  	    if (mode != WILD_ALL && mode != WILD_LONGEST)
  	    {
  		if (xp->xp_numfiles)
  		    non_suf_match = xp->xp_numfiles;
  		else
  		    non_suf_match = 1;
  		if ((xp->xp_context == EXPAND_FILES
  			    || xp->xp_context == EXPAND_DIRECTORIES)
  			&& xp->xp_numfiles > 1)
  		{
  		    /*
  		     * More than one match; check suffix.
  		     * The files will have been sorted on matching suffix in
  		     * expand_wildcards, only need to check the first two.
  		     */
  		    non_suf_match = 0;
  		    for (i = 0; i < 2; ++i)
  			if (match_suffix(xp->xp_files[i]))
  			    ++non_suf_match;
  		}
  		if (non_suf_match != 1)
  		{
  		    /* Can we ever get here unless it's while expanding
  		     * interactively?  If not, we can get rid of this all
  		     * together. Don't really want to wait for this message
  		     * (and possibly have to hit return to continue!).
  		     */
  		    if (!(options & WILD_SILENT))
  			EMSG(_(e_toomany));
  		    else if (!(options & WILD_NO_BEEP))
  			beep_flush();
  		}
  		if (!(non_suf_match != 1 && mode == WILD_EXPAND_FREE))
  		    ss = vim_strsave(xp->xp_files[0]);
  	    }
  	}
      }
  
      /* Find longest common part */
      if (mode == WILD_LONGEST && xp->xp_numfiles > 0)
      {
  	for (len = 0; xp->xp_files[0][len]; ++len)
  	{
  	    for (i = 0; i < xp->xp_numfiles; ++i)
  	    {
  #ifdef CASE_INSENSITIVE_FILENAME
  		if (xp->xp_context == EXPAND_DIRECTORIES
  			|| xp->xp_context == EXPAND_FILES
  			|| xp->xp_context == EXPAND_SHELLCMD
  			|| xp->xp_context == EXPAND_BUFFERS)
  		{
  		    if (TOLOWER_LOC(xp->xp_files[i][len]) !=
  					    TOLOWER_LOC(xp->xp_files[0][len]))
  			break;
  		}
  		else
  #endif
  		     if (xp->xp_files[i][len] != xp->xp_files[0][len])
  		    break;
  	    }
  	    if (i < xp->xp_numfiles)
  	    {
  		if (!(options & WILD_NO_BEEP))
  		    vim_beep();
  		break;
  	    }
  	}
  	ss = alloc((unsigned)len + 1);
  	if (ss)
  	    vim_strncpy(ss, xp->xp_files[0], (size_t)len);
  	findex = -1;			    /* next p_wc gets first one */
      }
  
      /* Concatenate all matching names */
      if (mode == WILD_ALL && xp->xp_numfiles > 0)
      {
  	len = 0;
  	for (i = 0; i < xp->xp_numfiles; ++i)
  	    len += (long_u)STRLEN(xp->xp_files[i]) + 1;
  	ss = lalloc(len, TRUE);
  	if (ss != NULL)
  	{
  	    *ss = NUL;
  	    for (i = 0; i < xp->xp_numfiles; ++i)
  	    {
  		STRCAT(ss, xp->xp_files[i]);
  		if (i != xp->xp_numfiles - 1)
  		    STRCAT(ss, (options & WILD_USE_NL) ? "\n" : " ");
  	    }
  	}
      }
  
      if (mode == WILD_EXPAND_FREE || mode == WILD_ALL)
  	ExpandCleanup(xp);
  
      /* Free "orig" if it wasn't stored in "orig_save". */
      if (!orig_saved)
  	vim_free(orig);
  
      return ss;
  }
  
  /*
   * Prepare an expand structure for use.
   */
      void
  ExpandInit(xp)
      expand_T	*xp;
  {
      xp->xp_backslash = XP_BS_NONE;
  #ifndef BACKSLASH_IN_FILENAME
      xp->xp_shell = FALSE;
  #endif
      xp->xp_numfiles = -1;
      xp->xp_files = NULL;
  #if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL) && defined(FEAT_CMDL_COMPL)
      xp->xp_arg = NULL;
  #endif
  }
  
  /*
   * Cleanup an expand structure after use.
   */
      void
  ExpandCleanup(xp)
      expand_T	*xp;
  {
      if (xp->xp_numfiles >= 0)
      {
  	FreeWild(xp->xp_numfiles, xp->xp_files);
  	xp->xp_numfiles = -1;
      }
  }
  
      void
  ExpandEscape(xp, str, numfiles, files, options)
      expand_T	*xp;
      char_u	*str;
      int		numfiles;
      char_u	**files;
      int		options;
  {
      int		i;
      char_u	*p;
  
      /*
       * May change home directory back to "~"
       */
      if (options & WILD_HOME_REPLACE)
  	tilde_replace(str, numfiles, files);
  
      if (options & WILD_ESCAPE)
      {
  	if (xp->xp_context == EXPAND_FILES
  		|| xp->xp_context == EXPAND_SHELLCMD
  		|| xp->xp_context == EXPAND_BUFFERS
  		|| xp->xp_context == EXPAND_DIRECTORIES)
  	{
  	    /*
  	     * Insert a backslash into a file name before a space, \, %, #
  	     * and wildmatch characters, except '~'.
  	     */
  	    for (i = 0; i < numfiles; ++i)
  	    {
  		/* for ":set path=" we need to escape spaces twice */
  		if (xp->xp_backslash == XP_BS_THREE)
  		{
  		    p = vim_strsave_escaped(files[i], (char_u *)" ");
  		    if (p != NULL)
  		    {
  			vim_free(files[i]);
  			files[i] = p;
  #if defined(BACKSLASH_IN_FILENAME)
  			p = vim_strsave_escaped(files[i], (char_u *)" ");
  			if (p != NULL)
  			{
  			    vim_free(files[i]);
  			    files[i] = p;
  			}
  #endif
  		    }
  		}
  #ifdef BACKSLASH_IN_FILENAME
  		p = vim_strsave_fnameescape(files[i], FALSE);
  #else
  		p = vim_strsave_fnameescape(files[i], xp->xp_shell);
  #endif
  		if (p != NULL)
  		{
  		    vim_free(files[i]);
  		    files[i] = p;
  		}
  
  		/* If 'str' starts with "\~", replace "~" at start of
  		 * files[i] with "\~". */
  		if (str[0] == '\\' && str[1] == '~' && files[i][0] == '~')
  		    escape_fname(&files[i]);
  	    }
  	    xp->xp_backslash = XP_BS_NONE;
  
  	    /* If the first file starts with a '+' escape it.  Otherwise it
  	     * could be seen as "+cmd". */
  	    if (*files[0] == '+')
  		escape_fname(&files[0]);
  	}
  	else if (xp->xp_context == EXPAND_TAGS)
  	{
  	    /*
  	     * Insert a backslash before characters in a tag name that
  	     * would terminate the ":tag" command.
  	     */
  	    for (i = 0; i < numfiles; ++i)
  	    {
  		p = vim_strsave_escaped(files[i], (char_u *)"\\|\"");
  		if (p != NULL)
  		{
  		    vim_free(files[i]);
  		    files[i] = p;
  		}
  	    }
  	}
      }
  }
  
  /*
   * Escape special characters in "fname" for when used as a file name argument
   * after a Vim command, or, when "shell" is non-zero, a shell command.
   * Returns the result in allocated memory.
   */
      char_u *
  vim_strsave_fnameescape(fname, shell)
      char_u *fname;
      int    shell;
  {
      char_u	*p;
  #ifdef BACKSLASH_IN_FILENAME
      char_u	buf[20];
      int		j = 0;
  
      /* Don't escape '[' and '{' if they are in 'isfname'. */
      for (p = PATH_ESC_CHARS; *p != NUL; ++p)
  	if ((*p != '[' && *p != '{') || !vim_isfilec(*p))
  	    buf[j++] = *p;
      buf[j] = NUL;
      p = vim_strsave_escaped(fname, buf);
  #else
      p = vim_strsave_escaped(fname, shell ? SHELL_ESC_CHARS : PATH_ESC_CHARS);
      if (shell && csh_like_shell() && p != NULL)
      {
  	char_u	    *s;
  
  	/* For csh and similar shells need to put two backslashes before '!'.
  	 * One is taken by Vim, one by the shell. */
  	s = vim_strsave_escaped(p, (char_u *)"!");
  	vim_free(p);
  	p = s;
      }
  #endif
  
      /* '>' and '+' are special at the start of some commands, e.g. ":edit" and
       * ":write".  "cd -" has a special meaning. */
      if (*p == '>' || *p == '+' || (*p == '-' && p[1] == NUL))
  	escape_fname(&p);
  
      return p;
  }
  
  /*
   * Put a backslash before the file name in "pp", which is in allocated memory.
   */
      static void
  escape_fname(pp)
      char_u **pp;
  {
      char_u	*p;
  
      p = alloc((unsigned)(STRLEN(*pp) + 2));
      if (p != NULL)
      {
  	p[0] = '\\';
  	STRCPY(p + 1, *pp);
  	vim_free(*pp);
  	*pp = p;
      }
  }
  
  /*
   * For each file name in files[num_files]:
   * If 'orig_pat' starts with "~/", replace the home directory with "~".
   */
      void
  tilde_replace(orig_pat, num_files, files)
      char_u  *orig_pat;
      int	    num_files;
      char_u  **files;
  {
      int	    i;
      char_u  *p;
  
      if (orig_pat[0] == '~' && vim_ispathsep(orig_pat[1]))
      {
  	for (i = 0; i < num_files; ++i)
  	{
  	    p = home_replace_save(NULL, files[i]);
  	    if (p != NULL)
  	    {
  		vim_free(files[i]);
  		files[i] = p;
  	    }
  	}
      }
  }
  
  /*
   * Show all matches for completion on the command line.
   * Returns EXPAND_NOTHING when the character that triggered expansion should
   * be inserted like a normal character.
   */
  /*ARGSUSED*/
      static int
  showmatches(xp, wildmenu)
      expand_T	*xp;
      int		wildmenu;
  {
  #define L_SHOWFILE(m) (showtail ? sm_gettail(files_found[m]) : files_found[m])
      int		num_files;
      char_u	**files_found;
      int		i, j, k;
      int		maxlen;
      int		lines;
      int		columns;
      char_u	*p;
      int		lastlen;
      int		attr;
      int		showtail;
  
      if (xp->xp_numfiles == -1)
      {
  	set_expand_context(xp);
  	i = expand_cmdline(xp, ccline.cmdbuff, ccline.cmdpos,
  						    &num_files, &files_found);
  	showtail = expand_showtail(xp);
  	if (i != EXPAND_OK)
  	    return i;
  
      }
      else
      {
  	num_files = xp->xp_numfiles;
  	files_found = xp->xp_files;
  	showtail = cmd_showtail;
      }
  
  #ifdef FEAT_WILDMENU
      if (!wildmenu)
      {
  #endif
  	msg_didany = FALSE;		/* lines_left will be set */
  	msg_start();			/* prepare for paging */
  	msg_putchar('\n');
  	out_flush();
  	cmdline_row = msg_row;
  	msg_didany = FALSE;		/* lines_left will be set again */
  	msg_start();			/* prepare for paging */
  #ifdef FEAT_WILDMENU
      }
  #endif
  
      if (got_int)
  	got_int = FALSE;	/* only int. the completion, not the cmd line */
  #ifdef FEAT_WILDMENU
      else if (wildmenu)
  	win_redr_status_matches(xp, num_files, files_found, 0, showtail);
  #endif
      else
      {
  	/* find the length of the longest file name */
  	maxlen = 0;
  	for (i = 0; i < num_files; ++i)
  	{
  	    if (!showtail && (xp->xp_context == EXPAND_FILES
  			  || xp->xp_context == EXPAND_SHELLCMD
  			  || xp->xp_context == EXPAND_BUFFERS))
  	    {
  		home_replace(NULL, files_found[i], NameBuff, MAXPATHL, TRUE);
  		j = vim_strsize(NameBuff);
  	    }
  	    else
  		j = vim_strsize(L_SHOWFILE(i));
  	    if (j > maxlen)
  		maxlen = j;
  	}
  
  	if (xp->xp_context == EXPAND_TAGS_LISTFILES)
  	    lines = num_files;
  	else
  	{
  	    /* compute the number of columns and lines for the listing */
  	    maxlen += 2;    /* two spaces between file names */
  	    columns = ((int)Columns + 2) / maxlen;
  	    if (columns < 1)
  		columns = 1;
  	    lines = (num_files + columns - 1) / columns;
  	}
  
  	attr = hl_attr(HLF_D);	/* find out highlighting for directories */
  
  	if (xp->xp_context == EXPAND_TAGS_LISTFILES)
  	{
  	    MSG_PUTS_ATTR(_("tagname"), hl_attr(HLF_T));
  	    msg_clr_eos();
  	    msg_advance(maxlen - 3);
  	    MSG_PUTS_ATTR(_(" kind file\n"), hl_attr(HLF_T));
  	}
  
  	/* list the files line by line */
  	for (i = 0; i < lines; ++i)
  	{
  	    lastlen = 999;
  	    for (k = i; k < num_files; k += lines)
  	    {
  		if (xp->xp_context == EXPAND_TAGS_LISTFILES)
  		{
  		    msg_outtrans_attr(files_found[k], hl_attr(HLF_D));
  		    p = files_found[k] + STRLEN(files_found[k]) + 1;
  		    msg_advance(maxlen + 1);
  		    msg_puts(p);
  		    msg_advance(maxlen + 3);
  		    msg_puts_long_attr(p + 2, hl_attr(HLF_D));
  		    break;
  		}
  		for (j = maxlen - lastlen; --j >= 0; )
  		    msg_putchar(' ');
  		if (xp->xp_context == EXPAND_FILES
  					  || xp->xp_context == EXPAND_SHELLCMD
  					  || xp->xp_context == EXPAND_BUFFERS)
  		{
  			    /* highlight directories */
  		    j = (mch_isdir(files_found[k]));
  		    if (showtail)
  			p = L_SHOWFILE(k);
  		    else
  		    {
  			home_replace(NULL, files_found[k], NameBuff, MAXPATHL,
  									TRUE);
  			p = NameBuff;
  		    }
  		}
  		else
  		{
  		    j = FALSE;
  		    p = L_SHOWFILE(k);
  		}
  		lastlen = msg_outtrans_attr(p, j ? attr : 0);
  	    }
  	    if (msg_col > 0)	/* when not wrapped around */
  	    {
  		msg_clr_eos();
  		msg_putchar('\n');
  	    }
  	    out_flush();		    /* show one line at a time */
  	    if (got_int)
  	    {
  		got_int = FALSE;
  		break;
  	    }
  	}
  
  	/*
  	 * we redraw the command below the lines that we have just listed
  	 * This is a bit tricky, but it saves a lot of screen updating.
  	 */
  	cmdline_row = msg_row;	/* will put it back later */
      }
  
      if (xp->xp_numfiles == -1)
  	FreeWild(num_files, files_found);
  
      return EXPAND_OK;
  }
  
  /*
   * Private gettail for showmatches() (and win_redr_status_matches()):
   * Find tail of file name path, but ignore trailing "/".
   */
      char_u *
  sm_gettail(s)
      char_u	*s;
  {
      char_u	*p;
      char_u	*t = s;
      int		had_sep = FALSE;
  
      for (p = s; *p != NUL; )
      {
  	if (vim_ispathsep(*p)
  #ifdef BACKSLASH_IN_FILENAME
  		&& !rem_backslash(p)
  #endif
  	   )
  	    had_sep = TRUE;
  	else if (had_sep)
  	{
  	    t = p;
  	    had_sep = FALSE;
  	}
  	mb_ptr_adv(p);
      }
      return t;
  }
  
  /*
   * Return TRUE if we only need to show the tail of completion matches.
   * When not completing file names or there is a wildcard in the path FALSE is
   * returned.
   */
      static int
  expand_showtail(xp)
      expand_T	*xp;
  {
      char_u	*s;
      char_u	*end;
  
      /* When not completing file names a "/" may mean something different. */
      if (xp->xp_context != EXPAND_FILES
  	    && xp->xp_context != EXPAND_SHELLCMD
  	    && xp->xp_context != EXPAND_DIRECTORIES)
  	return FALSE;
  
      end = gettail(xp->xp_pattern);
      if (end == xp->xp_pattern)		/* there is no path separator */
  	return FALSE;
  
      for (s = xp->xp_pattern; s < end; s++)
      {
  	/* Skip escaped wildcards.  Only when the backslash is not a path
  	 * separator, on DOS the '*' "path\*\file" must not be skipped. */
  	if (rem_backslash(s))
  	    ++s;
  	else if (vim_strchr((char_u *)"*?[", *s) != NULL)
  	    return FALSE;
      }
      return TRUE;
  }
  
  /*
   * Prepare a string for expansion.
   * When expanding file names: The string will be used with expand_wildcards().
   * Copy the file name into allocated memory and add a '*' at the end.
   * When expanding other names: The string will be used with regcomp().  Copy
   * the name into allocated memory and prepend "^".
   */
      char_u *
  addstar(fname, len, context)
      char_u	*fname;
      int		len;
      int		context;	/* EXPAND_FILES etc. */
  {
      char_u	*retval;
      int		i, j;
      int		new_len;
      char_u	*tail;
  
      if (context != EXPAND_FILES
  	    && context != EXPAND_SHELLCMD
  	    && context != EXPAND_DIRECTORIES)
      {
  	/*
  	 * Matching will be done internally (on something other than files).
  	 * So we convert the file-matching-type wildcards into our kind for
  	 * use with vim_regcomp().  First work out how long it will be:
  	 */
  
  	/* For help tags the translation is done in find_help_tags().
  	 * For a tag pattern starting with "/" no translation is needed. */
  	if (context == EXPAND_HELP
  		|| context == EXPAND_COLORS
  		|| context == EXPAND_COMPILER
  		|| (context == EXPAND_TAGS && fname[0] == '/'))
  	    retval = vim_strnsave(fname, len);
  	else
  	{
  	    new_len = len + 2;		/* +2 for '^' at start, NUL at end */
  	    for (i = 0; i < len; i++)
  	    {
  		if (fname[i] == '*' || fname[i] == '~')
  		    new_len++;		/* '*' needs to be replaced by ".*"
  					   '~' needs to be replaced by "\~" */
  
  		/* Buffer names are like file names.  "." should be literal */
  		if (context == EXPAND_BUFFERS && fname[i] == '.')
  		    new_len++;		/* "." becomes "\." */
  
  		/* Custom expansion takes care of special things, match
  		 * backslashes literally (perhaps also for other types?) */
  		if ((context == EXPAND_USER_DEFINED
  			  || context == EXPAND_USER_LIST) && fname[i] == '\\')
  		    new_len++;		/* '\' becomes "\\" */
  	    }
  	    retval = alloc(new_len);
  	    if (retval != NULL)
  	    {
  		retval[0] = '^';
  		j = 1;
  		for (i = 0; i < len; i++, j++)
  		{
  		    /* Skip backslash.  But why?  At least keep it for custom
  		     * expansion. */
  		    if (context != EXPAND_USER_DEFINED
  			    && context != EXPAND_USER_LIST
  			    && fname[i] == '\\'
  			    && ++i == len)
  			break;
  
  		    switch (fname[i])
  		    {
  			case '*':   retval[j++] = '.';
  				    break;
  			case '~':   retval[j++] = '\\';
  				    break;
  			case '?':   retval[j] = '.';
  				    continue;
  			case '.':   if (context == EXPAND_BUFFERS)
  					retval[j++] = '\\';
  				    break;
  			case '\\':  if (context == EXPAND_USER_DEFINED
  					    || context == EXPAND_USER_LIST)
  					retval[j++] = '\\';
  				    break;
  		    }
  		    retval[j] = fname[i];
  		}
  		retval[j] = NUL;
  	    }
  	}
      }
      else
      {
  	retval = alloc(len + 4);
  	if (retval != NULL)
  	{
  	    vim_strncpy(retval, fname, len);
  
  	    /*
  	     * Don't add a star to *, ~, ~user, $var or `cmd`.
  	     * * would become **, which walks the whole tree.
  	     * ~ would be at the start of the file name, but not the tail.
  	     * $ could be anywhere in the tail.
  	     * ` could be anywhere in the file name.
  	     * When the name ends in '$' don't add a star, remove the '$'.
  	     */
  	    tail = gettail(retval);
  	    if ((*retval != '~' || tail != retval)
  		    && (len == 0 || retval[len - 1] != '*')
  		    && vim_strchr(tail, '$') == NULL
  		    && vim_strchr(retval, '`') == NULL)
  		retval[len++] = '*';
  	    else if (len > 0 && retval[len - 1] == '$')
  		--len;
  	    retval[len] = NUL;
  	}
      }
      return retval;
  }
  
  /*
   * Must parse the command line so far to work out what context we are in.
   * Completion can then be done based on that context.
   * This routine sets the variables:
   *  xp->xp_pattern	    The start of the pattern to be expanded within
   *				the command line (ends at the cursor).
   *  xp->xp_context	    The type of thing to expand.  Will be one of:
   *
   *  EXPAND_UNSUCCESSFUL	    Used sometimes when there is something illegal on
   *			    the command line, like an unknown command.	Caller
   *			    should beep.
   *  EXPAND_NOTHING	    Unrecognised context for completion, use char like
   *			    a normal char, rather than for completion.	eg
   *			    :s/^I/
   *  EXPAND_COMMANDS	    Cursor is still touching the command, so complete
   *			    it.
   *  EXPAND_BUFFERS	    Complete file names for :buf and :sbuf commands.
   *  EXPAND_FILES	    After command with XFILE set, or after setting
   *			    with P_EXPAND set.	eg :e ^I, :w>>^I
   *  EXPAND_DIRECTORIES	    In some cases this is used instead of the latter
   *			    when we know only directories are of interest.  eg
   *			    :set dir=^I
   *  EXPAND_SHELLCMD	    After ":!cmd", ":r !cmd"  or ":w !cmd".
   *  EXPAND_SETTINGS	    Complete variable names.  eg :set d^I
   *  EXPAND_BOOL_SETTINGS    Complete boolean variables only,  eg :set no^I
   *  EXPAND_TAGS		    Complete tags from the files in p_tags.  eg :ta a^I
   *  EXPAND_TAGS_LISTFILES   As above, but list filenames on ^D, after :tselect
   *  EXPAND_HELP		    Complete tags from the file 'helpfile'/tags
   *  EXPAND_EVENTS	    Complete event names
   *  EXPAND_SYNTAX	    Complete :syntax command arguments
   *  EXPAND_HIGHLIGHT	    Complete highlight (syntax) group names
   *  EXPAND_AUGROUP	    Complete autocommand group names
   *  EXPAND_USER_VARS	    Complete user defined variable names, eg :unlet a^I
   *  EXPAND_MAPPINGS	    Complete mapping and abbreviation names,
   *			      eg :unmap a^I , :cunab x^I
   *  EXPAND_FUNCTIONS	    Complete internal or user defined function names,
   *			      eg :call sub^I
   *  EXPAND_USER_FUNC	    Complete user defined function names, eg :delf F^I
   *  EXPAND_EXPRESSION	    Complete internal or user defined function/variable
   *			    names in expressions, eg :while s^I
   *  EXPAND_ENV_VARS	    Complete environment variable names
   */
      static void
  set_expand_context(xp)
      expand_T	*xp;
  {
      /* only expansion for ':', '>' and '=' command-lines */
      if (ccline.cmdfirstc != ':'
  #ifdef FEAT_EVAL
  	    && ccline.cmdfirstc != '>' && ccline.cmdfirstc != '='
  	    && !ccline.input_fn
  #endif
  	    )
      {
  	xp->xp_context = EXPAND_NOTHING;
  	return;
      }
      set_cmd_context(xp, ccline.cmdbuff, ccline.cmdlen, ccline.cmdpos);
  }
  
      void
  set_cmd_context(xp, str, len, col)
      expand_T	*xp;
      char_u	*str;	    /* start of command line */
      int		len;	    /* length of command line (excl. NUL) */
      int		col;	    /* position of cursor */
  {
      int		old_char = NUL;
      char_u	*nextcomm;
  
      /*
       * Avoid a UMR warning from Purify, only save the character if it has been
       * written before.
       */
      if (col < len)
  	old_char = str[col];
      str[col] = NUL;
      nextcomm = str;
  
  #ifdef FEAT_EVAL
      if (ccline.cmdfirstc == '=')
      {
  # ifdef FEAT_CMDL_COMPL
  	/* pass CMD_SIZE because there is no real command */
  	set_context_for_expression(xp, str, CMD_SIZE);
  # endif
      }
      else if (ccline.input_fn)
      {
  	xp->xp_context = ccline.xp_context;
  	xp->xp_pattern = ccline.cmdbuff;
  # if defined(FEAT_USR_CMDS) && defined(FEAT_CMDL_COMPL)
  	xp->xp_arg = ccline.xp_arg;
  # endif
      }
      else
  #endif
  	while (nextcomm != NULL)
  	    nextcomm = set_one_cmd_context(xp, nextcomm);
  
      str[col] = old_char;
  }
  
  /*
   * Expand the command line "str" from context "xp".
   * "xp" must have been set by set_cmd_context().
   * xp->xp_pattern points into "str", to where the text that is to be expanded
   * starts.
   * Returns EXPAND_UNSUCCESSFUL when there is something illegal before the
   * cursor.
   * Returns EXPAND_NOTHING when there is nothing to expand, might insert the
   * key that triggered expansion literally.
   * Returns EXPAND_OK otherwise.
   */
      int
  expand_cmdline(xp, str, col, matchcount, matches)
      expand_T	*xp;
      char_u	*str;		/* start of command line */
      int		col;		/* position of cursor */
      int		*matchcount;	/* return: nr of matches */
      char_u	***matches;	/* return: array of pointers to matches */
  {
      char_u	*file_str = NULL;
  
      if (xp->xp_context == EXPAND_UNSUCCESSFUL)
      {
  	beep_flush();
  	return EXPAND_UNSUCCESSFUL;  /* Something illegal on command line */
      }
      if (xp->xp_context == EXPAND_NOTHING)
      {
  	/* Caller can use the character as a normal char instead */
  	return EXPAND_NOTHING;
      }
  
      /* add star to file name, or convert to regexp if not exp. files. */
      file_str = addstar(xp->xp_pattern,
  			   (int)(str + col - xp->xp_pattern), xp->xp_context);
      if (file_str == NULL)
  	return EXPAND_UNSUCCESSFUL;
  
      /* find all files that match the description */
      if (ExpandFromContext(xp, file_str, matchcount, matches,
  					  WILD_ADD_SLASH|WILD_SILENT) == FAIL)
      {
  	*matchcount = 0;
  	*matches = NULL;
      }
      vim_free(file_str);
  
      return EXPAND_OK;
  }
  
  #ifdef FEAT_MULTI_LANG
  /*
   * Cleanup matches for help tags: remove "@en" if "en" is the only language.
   */
  static void	cleanup_help_tags __ARGS((int num_file, char_u **file));
  
      static void
  cleanup_help_tags(num_file, file)
      int		num_file;
      char_u	**file;
  {
      int		i, j;
      int		len;
  
      for (i = 0; i < num_file; ++i)
      {
  	len = (int)STRLEN(file[i]) - 3;
  	if (len > 0 && STRCMP(file[i] + len, "@en") == 0)
  	{
  	    /* Sorting on priority means the same item in another language may
  	     * be anywhere.  Search all items for a match up to the "@en". */
  	    for (j = 0; j < num_file; ++j)
  		if (j != i
  			&& (int)STRLEN(file[j]) == len + 3
  			&& STRNCMP(file[i], file[j], len + 1) == 0)
  		    break;
  	    if (j == num_file)
  		file[i][len] = NUL;
  	}
      }
  }
  #endif
  
  /*
   * Do the expansion based on xp->xp_context and "pat".
   */
      static int
  ExpandFromContext(xp, pat, num_file, file, options)
      expand_T	*xp;
      char_u	*pat;
      int		*num_file;
      char_u	***file;
      int		options;
  {
  #ifdef FEAT_CMDL_COMPL
      regmatch_T	regmatch;
  #endif
      int		ret;
      int		flags;
  
      flags = EW_DIR;	/* include directories */
      if (options & WILD_LIST_NOTFOUND)
  	flags |= EW_NOTFOUND;
      if (options & WILD_ADD_SLASH)
  	flags |= EW_ADDSLASH;
      if (options & WILD_KEEP_ALL)
  	flags |= EW_KEEPALL;
      if (options & WILD_SILENT)
  	flags |= EW_SILENT;
  
      if (xp->xp_context == EXPAND_FILES || xp->xp_context == EXPAND_DIRECTORIES)
      {
  	/*
  	 * Expand file or directory names.
  	 */
  	int	free_pat = FALSE;
  	int	i;
  
  	/* for ":set path=" and ":set tags=" halve backslashes for escaped
  	 * space */
  	if (xp->xp_backslash != XP_BS_NONE)
  	{
  	    free_pat = TRUE;
  	    pat = vim_strsave(pat);
  	    for (i = 0; pat[i]; ++i)
  		if (pat[i] == '\\')
  		{
  		    if (xp->xp_backslash == XP_BS_THREE
  			    && pat[i + 1] == '\\'
  			    && pat[i + 2] == '\\'
  			    && pat[i + 3] == ' ')
  			STRMOVE(pat + i, pat + i + 3);
  		    if (xp->xp_backslash == XP_BS_ONE
  			    && pat[i + 1] == ' ')
  			STRMOVE(pat + i, pat + i + 1);
  		}
  	}
  
  	if (xp->xp_context == EXPAND_FILES)
  	    flags |= EW_FILE;
  	else
  	    flags = (flags | EW_DIR) & ~EW_FILE;
  	ret = expand_wildcards(1, &pat, num_file, file, flags);
  	if (free_pat)
  	    vim_free(pat);
  	return ret;
      }
  
      *file = (char_u **)"";
      *num_file = 0;
      if (xp->xp_context == EXPAND_HELP)
      {
  	/* With an empty argument we would get all the help tags, which is
  	 * very slow.  Get matches for "help" instead. */
  	if (find_help_tags(*pat == NUL ? (char_u *)"help" : pat,
  						 num_file, file, FALSE) == OK)
  	{
  #ifdef FEAT_MULTI_LANG
  	    cleanup_help_tags(*num_file, *file);
  #endif
  	    return OK;
  	}
  	return FAIL;
      }
  
  #ifndef FEAT_CMDL_COMPL
      return FAIL;
  #else
      if (xp->xp_context == EXPAND_SHELLCMD)
  	return expand_shellcmd(pat, num_file, file, flags);
      if (xp->xp_context == EXPAND_OLD_SETTING)
  	return ExpandOldSetting(num_file, file);
      if (xp->xp_context == EXPAND_BUFFERS)
  	return ExpandBufnames(pat, num_file, file, options);
      if (xp->xp_context == EXPAND_TAGS
  	    || xp->xp_context == EXPAND_TAGS_LISTFILES)
  	return expand_tags(xp->xp_context == EXPAND_TAGS, pat, num_file, file);
      if (xp->xp_context == EXPAND_COLORS)
  	return ExpandRTDir(pat, num_file, file, "colors");
      if (xp->xp_context == EXPAND_COMPILER)
  	return ExpandRTDir(pat, num_file, file, "compiler");
  # if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL)
      if (xp->xp_context == EXPAND_USER_LIST)
  	return ExpandUserList(xp, num_file, file);
  # endif
  
      regmatch.regprog = vim_regcomp(pat, p_magic ? RE_MAGIC : 0);
      if (regmatch.regprog == NULL)
  	return FAIL;
  
      /* set ignore-case according to p_ic, p_scs and pat */
      regmatch.rm_ic = ignorecase(pat);
  
      if (xp->xp_context == EXPAND_SETTINGS
  	    || xp->xp_context == EXPAND_BOOL_SETTINGS)
  	ret = ExpandSettings(xp, &regmatch, num_file, file);
      else if (xp->xp_context == EXPAND_MAPPINGS)
  	ret = ExpandMappings(&regmatch, num_file, file);
  # if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL)
      else if (xp->xp_context == EXPAND_USER_DEFINED)
  	ret = ExpandUserDefined(xp, &regmatch, num_file, file);
  # endif
      else
      {
  	static struct expgen
  	{
  	    int		context;
  	    char_u	*((*func)__ARGS((expand_T *, int)));
  	    int		ic;
  	} tab[] =
  	{
  	    {EXPAND_COMMANDS, get_command_name, FALSE},
  #ifdef FEAT_USR_CMDS
  	    {EXPAND_USER_COMMANDS, get_user_commands, FALSE},
  	    {EXPAND_USER_CMD_FLAGS, get_user_cmd_flags, FALSE},
  	    {EXPAND_USER_NARGS, get_user_cmd_nargs, FALSE},
  	    {EXPAND_USER_COMPLETE, get_user_cmd_complete, FALSE},
  #endif
  #ifdef FEAT_EVAL
  	    {EXPAND_USER_VARS, get_user_var_name, FALSE},
  	    {EXPAND_FUNCTIONS, get_function_name, FALSE},
  	    {EXPAND_USER_FUNC, get_user_func_name, FALSE},
  	    {EXPAND_EXPRESSION, get_expr_name, FALSE},
  #endif
  #ifdef FEAT_MENU
  	    {EXPAND_MENUS, get_menu_name, FALSE},
  	    {EXPAND_MENUNAMES, get_menu_names, FALSE},
  #endif
  #ifdef FEAT_SYN_HL
  	    {EXPAND_SYNTAX, get_syntax_name, TRUE},
  #endif
  	    {EXPAND_HIGHLIGHT, get_highlight_name, TRUE},
  #ifdef FEAT_AUTOCMD
  	    {EXPAND_EVENTS, get_event_name, TRUE},
  	    {EXPAND_AUGROUP, get_augroup_name, TRUE},
  #endif
  #if (defined(HAVE_LOCALE_H) || defined(X_LOCALE)) \
  	&& (defined(FEAT_GETTEXT) || defined(FEAT_MBYTE))
  	    {EXPAND_LANGUAGE, get_lang_arg, TRUE},
  #endif
  	    {EXPAND_ENV_VARS, get_env_name, TRUE},
  	};
  	int	i;
  
  	/*
  	 * Find a context in the table and call the ExpandGeneric() with the
  	 * right function to do the expansion.
  	 */
  	ret = FAIL;
  	for (i = 0; i < sizeof(tab) / sizeof(struct expgen); ++i)
  	    if (xp->xp_context == tab[i].context)
  	    {
  		if (tab[i].ic)
  		    regmatch.rm_ic = TRUE;
  		ret = ExpandGeneric(xp, &regmatch, num_file, file, tab[i].func);
  		break;
  	    }
      }
  
      vim_free(regmatch.regprog);
  
      return ret;
  #endif /* FEAT_CMDL_COMPL */
  }
  
  #if defined(FEAT_CMDL_COMPL) || defined(PROTO)
  /*
   * Expand a list of names.
   *
   * Generic function for command line completion.  It calls a function to
   * obtain strings, one by one.	The strings are matched against a regexp
   * program.  Matching strings are copied into an array, which is returned.
   *
   * Returns OK when no problems encountered, FAIL for error (out of memory).
   */
      int
  ExpandGeneric(xp, regmatch, num_file, file, func)
      expand_T	*xp;
      regmatch_T	*regmatch;
      int		*num_file;
      char_u	***file;
      char_u	*((*func)__ARGS((expand_T *, int)));
  					  /* returns a string from the list */
  {
      int		i;
      int		count = 0;
      int		round;
      char_u	*str;
  
      /* do this loop twice:
       * round == 0: count the number of matching names
       * round == 1: copy the matching names into allocated memory
       */
      for (round = 0; round <= 1; ++round)
      {
  	for (i = 0; ; ++i)
  	{
  	    str = (*func)(xp, i);
  	    if (str == NULL)	    /* end of list */
  		break;
  	    if (*str == NUL)	    /* skip empty strings */
  		continue;
  
  	    if (vim_regexec(regmatch, str, (colnr_T)0))
  	    {
  		if (round)
  		{
  		    str = vim_strsave_escaped(str, (char_u *)" \t\\.");
  		    (*file)[count] = str;
  #ifdef FEAT_MENU
  		    if (func == get_menu_names && str != NULL)
  		    {
  			/* test for separator added by get_menu_names() */
  			str += STRLEN(str) - 1;
  			if (*str == '\001')
  			    *str = '.';
  		    }
  #endif
  		}
  		++count;
  	    }
  	}
  	if (round == 0)
  	{
  	    if (count == 0)
  		return OK;
  	    *num_file = count;
  	    *file = (char_u **)alloc((unsigned)(count * sizeof(char_u *)));
  	    if (*file == NULL)
  	    {
  		*file = (char_u **)"";
  		return FAIL;
  	    }
  	    count = 0;
  	}
      }
  
      /* Sort the results.  Keep menu's in the specified order. */
      if (xp->xp_context != EXPAND_MENUNAMES && xp->xp_context != EXPAND_MENUS)
  	sort_strings(*file, *num_file);
  
  #ifdef FEAT_CMDL_COMPL
      /* Reset the variables used for special highlight names expansion, so that
       * they don't show up when getting normal highlight names by ID. */
      reset_expand_highlight();
  #endif
  
      return OK;
  }
  
  /*
   * Complete a shell command.
   * Returns FAIL or OK;
   */
      static int
  expand_shellcmd(filepat, num_file, file, flagsarg)
      char_u	*filepat;	/* pattern to match with command names */
      int		*num_file;	/* return: number of matches */
      char_u	***file;	/* return: array with matches */
      int		flagsarg;	/* EW_ flags */
  {
      char_u	*pat;
      int		i;
      char_u	*path;
      int		mustfree = FALSE;
      garray_T    ga;
      char_u	*buf = alloc(MAXPATHL);
      size_t	l;
      char_u	*s, *e;
      int		flags = flagsarg;
      int		ret;
  
      if (buf == NULL)
  	return FAIL;
  
      /* for ":set path=" and ":set tags=" halve backslashes for escaped
       * space */
      pat = vim_strsave(filepat);
      for (i = 0; pat[i]; ++i)
  	if (pat[i] == '\\' && pat[i + 1] == ' ')
  	    STRMOVE(pat + i, pat + i + 1);
  
      flags |= EW_FILE | EW_EXEC;
  
      /* For an absolute name we don't use $PATH. */
      if (mch_isFullName(pat))
  	path = (char_u *)" ";
      else if ((pat[0] == '.' && (vim_ispathsep(pat[1])
  			    || (pat[1] == '.' && vim_ispathsep(pat[2])))))
  	path = (char_u *)".";
      else
  	path = vim_getenv((char_u *)"PATH", &mustfree);
  
      /*
       * Go over all directories in $PATH.  Expand matches in that directory and
       * collect them in "ga".
       */
      ga_init2(&ga, (int)sizeof(char *), 10);
      for (s = path; *s != NUL; s = e)
      {
  	if (*s == ' ')
  	    ++s;	/* Skip space used for absolute path name. */
  
  #if defined(MSDOS) || defined(MSWIN) || defined(OS2)
  	e = vim_strchr(s, ';');
  #else
  	e = vim_strchr(s, ':');
  #endif
  	if (e == NULL)
  	    e = s + STRLEN(s);
  
  	l = e - s;
  	if (l > MAXPATHL - 5)
  	    break;
  	vim_strncpy(buf, s, l);
  	add_pathsep(buf);
  	l = STRLEN(buf);
  	vim_strncpy(buf + l, pat, MAXPATHL - 1 - l);
  
  	/* Expand matches in one directory of $PATH. */
  	ret = expand_wildcards(1, &buf, num_file, file, flags);
  	if (ret == OK)
  	{
  	    if (ga_grow(&ga, *num_file) == FAIL)
  		FreeWild(*num_file, *file);
  	    else
  	    {
  		for (i = 0; i < *num_file; ++i)
  		{
  		    s = (*file)[i];
  		    if (STRLEN(s) > l)
  		    {
  			/* Remove the path again. */
  			STRMOVE(s, s + l);
  			((char_u **)ga.ga_data)[ga.ga_len++] = s;
  		    }
  		    else
  			vim_free(s);
  		}
  		vim_free(*file);
  	    }
  	}
  	if (*e != NUL)
  	    ++e;
      }
      *file = ga.ga_data;
      *num_file = ga.ga_len;
  
      vim_free(buf);
      vim_free(pat);
      if (mustfree)
  	vim_free(path);
      return OK;
  }
  
  
  # if defined(FEAT_USR_CMDS) && defined(FEAT_EVAL)
  static void * call_user_expand_func __ARGS((void *(*user_expand_func) __ARGS((char_u *, int, char_u **, int)), expand_T	*xp, int *num_file, char_u ***file));
  
  /*
   * Call "user_expand_func()" to invoke a user defined VimL function and return
   * the result (either a string or a List).
   */
      static void *
  call_user_expand_func(user_expand_func, xp, num_file, file)
      void	*(*user_expand_func) __ARGS((char_u *, int, char_u **, int));
      expand_T	*xp;
      int		*num_file;
      char_u	***file;
  {
      char_u	keep;
      char_u	num[50];
      char_u	*args[3];
      int		save_current_SID = current_SID;
      void	*ret;
      struct cmdline_info	    save_ccline;
  
      if (xp->xp_arg == NULL || xp->xp_arg[0] == '\0')
  	return NULL;
      *num_file = 0;
      *file = NULL;
  
      if (ccline.cmdbuff == NULL)
      {
  	/* Completion from Insert mode, pass fake arguments. */
  	keep = 0;
  	sprintf((char *)num, "%d", (int)STRLEN(xp->xp_pattern));
  	args[1] = xp->xp_pattern;
      }
      else
      {
  	/* Completion on the command line, pass real arguments. */
  	keep = ccline.cmdbuff[ccline.cmdlen];
  	ccline.cmdbuff[ccline.cmdlen] = 0;
  	sprintf((char *)num, "%d", ccline.cmdpos);
  	args[1] = ccline.cmdbuff;
      }
      args[0] = xp->xp_pattern;
      args[2] = num;
  
      /* Save the cmdline, we don't know what the function may do. */
      save_ccline = ccline;
      ccline.cmdbuff = NULL;
      ccline.cmdprompt = NULL;
      current_SID = xp->xp_scriptID;
  
      ret = user_expand_func(xp->xp_arg, 3, args, FALSE);
  
      ccline = save_ccline;
      current_SID = save_current_SID;
      if (ccline.cmdbuff != NULL)
  	ccline.cmdbuff[ccline.cmdlen] = keep;
  
      return ret;
  }
  
  /*
   * Expand names with a function defined by the user.
   */
      static int
  ExpandUserDefined(xp, regmatch, num_file, file)
      expand_T	*xp;
      regmatch_T	*regmatch;
      int		*num_file;
      char_u	***file;
  {
      char_u	*retstr;
      char_u	*s;
      char_u	*e;
      char_u      keep;
      garray_T	ga;
  
      retstr = call_user_expand_func(call_func_retstr, xp, num_file, file);
      if (retstr == NULL)
  	return FAIL;
  
      ga_init2(&ga, (int)sizeof(char *), 3);
      for (s = retstr; *s != NUL; s = e)
      {
  	e = vim_strchr(s, '\n');
  	if (e == NULL)
  	    e = s + STRLEN(s);
  	keep = *e;
  	*e = 0;
  
  	if (xp->xp_pattern[0] && vim_regexec(regmatch, s, (colnr_T)0) == 0)
  	{
  	    *e = keep;
  	    if (*e != NUL)
  		++e;
  	    continue;
  	}
  
  	if (ga_grow(&ga, 1) == FAIL)
  	    break;
  
  	((char_u **)ga.ga_data)[ga.ga_len] = vim_strnsave(s, (int)(e - s));
  	++ga.ga_len;
  
  	*e = keep;
  	if (*e != NUL)
  	    ++e;
      }
      vim_free(retstr);
      *file = ga.ga_data;
      *num_file = ga.ga_len;
      return OK;
  }
  
  /*
   * Expand names with a list returned by a function defined by the user.
   */
      static int
  ExpandUserList(xp, num_file, file)
      expand_T	*xp;
      int		*num_file;
      char_u	***file;
  {
      list_T      *retlist;
      listitem_T	*li;
      garray_T	ga;
  
      retlist = call_user_expand_func(call_func_retlist, xp, num_file, file);
      if (retlist == NULL)
  	return FAIL;
  
      ga_init2(&ga, (int)sizeof(char *), 3);
      /* Loop over the items in the list. */
      for (li = retlist->lv_first; li != NULL; li = li->li_next)
      {
  	if (li->li_tv.v_type != VAR_STRING)
  	    continue;  /* Skip non-string items */
  
  	if (ga_grow(&ga, 1) == FAIL)
  	    break;
  
  	((char_u **)ga.ga_data)[ga.ga_len] =
  	    vim_strsave(li->li_tv.vval.v_string);
  	++ga.ga_len;
      }
      list_unref(retlist);
  
      *file = ga.ga_data;
      *num_file = ga.ga_len;
      return OK;
  }
  #endif
  
  /*
   * Expand color scheme names: 'runtimepath'/colors/{pat}.vim
   * or compiler names.
   */
      static int
  ExpandRTDir(pat, num_file, file, dirname)
      char_u	*pat;
      int		*num_file;
      char_u	***file;
      char	*dirname;	/* "colors" or "compiler" */
  {
      char_u	*all;
      char_u	*s;
      char_u	*e;
      garray_T	ga;
  
      *num_file = 0;
      *file = NULL;
      s = alloc((unsigned)(STRLEN(pat) + STRLEN(dirname) + 7));
      if (s == NULL)
  	return FAIL;
      sprintf((char *)s, "%s/%s*.vim", dirname, pat);
      all = globpath(p_rtp, s);
      vim_free(s);
      if (all == NULL)
  	return FAIL;
  
      ga_init2(&ga, (int)sizeof(char *), 3);
      for (s = all; *s != NUL; s = e)
      {
  	e = vim_strchr(s, '\n');
  	if (e == NULL)
  	    e = s + STRLEN(s);
  	if (ga_grow(&ga, 1) == FAIL)
  	    break;
  	if (e - 4 > s && STRNICMP(e - 4, ".vim", 4) == 0)
  	{
  	    for (s = e - 4; s > all; mb_ptr_back(all, s))
  		if (*s == '\n' || vim_ispathsep(*s))
  		    break;
  	    ++s;
  	    ((char_u **)ga.ga_data)[ga.ga_len] =
  					    vim_strnsave(s, (int)(e - s - 4));
  	    ++ga.ga_len;
  	}
  	if (*e != NUL)
  	    ++e;
      }
      vim_free(all);
      *file = ga.ga_data;
      *num_file = ga.ga_len;
      return OK;
  }
  
  #endif
  
  #if defined(FEAT_CMDL_COMPL) || defined(FEAT_EVAL) || defined(PROTO)
  /*
   * Expand "file" for all comma-separated directories in "path".
   * Returns an allocated string with all matches concatenated, separated by
   * newlines.  Returns NULL for an error or no matches.
   */
      char_u *
  globpath(path, file)
      char_u	*path;
      char_u	*file;
  {
      expand_T	xpc;
      char_u	*buf;
      garray_T	ga;
      int		i;
      int		len;
      int		num_p;
      char_u	**p;
      char_u	*cur = NULL;
  
      buf = alloc(MAXPATHL);
      if (buf == NULL)
  	return NULL;
  
      ExpandInit(&xpc);
      xpc.xp_context = EXPAND_FILES;
  
      ga_init2(&ga, 1, 100);
  
      /* Loop over all entries in {path}. */
      while (*path != NUL)
      {
  	/* Copy one item of the path to buf[] and concatenate the file name. */
  	copy_option_part(&path, buf, MAXPATHL, ",");
  	if (STRLEN(buf) + STRLEN(file) + 2 < MAXPATHL)
  	{
  	    add_pathsep(buf);
  	    STRCAT(buf, file);
  	    if (ExpandFromContext(&xpc, buf, &num_p, &p, WILD_SILENT) != FAIL
  								 && num_p > 0)
  	    {
  		ExpandEscape(&xpc, buf, num_p, p, WILD_SILENT);
  		for (len = 0, i = 0; i < num_p; ++i)
  		    len += (int)STRLEN(p[i]) + 1;
  
  		/* Concatenate new results to previous ones. */
  		if (ga_grow(&ga, len) == OK)
  		{
  		    cur = (char_u *)ga.ga_data + ga.ga_len;
  		    for (i = 0; i < num_p; ++i)
  		    {
  			STRCPY(cur, p[i]);
  			cur += STRLEN(p[i]);
  			*cur++ = '\n';
  		    }
  		    ga.ga_len += len;
  		}
  		FreeWild(num_p, p);
  	    }
  	}
      }
      if (cur != NULL)
  	*--cur = 0; /* Replace trailing newline with NUL */
  
      vim_free(buf);
      return (char_u *)ga.ga_data;
  }
  
  #endif
  
  #if defined(FEAT_CMDHIST) || defined(PROTO)
  
  /*********************************
   *  Command line history stuff	 *
   *********************************/
  
  /*
   * Translate a history character to the associated type number.
   */
      static int
  hist_char2type(c)
      int	    c;
  {
      if (c == ':')
  	return HIST_CMD;
      if (c == '=')
  	return HIST_EXPR;
      if (c == '@')
  	return HIST_INPUT;
      if (c == '>')
  	return HIST_DEBUG;
      return HIST_SEARCH;	    /* must be '?' or '/' */
  }
  
  /*
   * Table of history names.
   * These names are used in :history and various hist...() functions.
   * It is sufficient to give the significant prefix of a history name.
   */
  
  static char *(history_names[]) =
  {
      "cmd",
      "search",
      "expr",
      "input",
      "debug",
      NULL
  };
  
  /*
   * init_history() - Initialize the command line history.
   * Also used to re-allocate the history when the size changes.
   */
      void
  init_history()
  {
      int		newlen;	    /* new length of history table */
      histentry_T	*temp;
      int		i;
      int		j;
      int		type;
  
      /*
       * If size of history table changed, reallocate it
       */
      newlen = (int)p_hi;
      if (newlen != hislen)			/* history length changed */
      {
  	for (type = 0; type < HIST_COUNT; ++type)   /* adjust the tables */
  	{
  	    if (newlen)
  	    {
  		temp = (histentry_T *)lalloc(
  				(long_u)(newlen * sizeof(histentry_T)), TRUE);
  		if (temp == NULL)   /* out of memory! */
  		{
  		    if (type == 0)  /* first one: just keep the old length */
  		    {
  			newlen = hislen;
  			break;
  		    }
  		    /* Already changed one table, now we can only have zero
  		     * length for all tables. */
  		    newlen = 0;
  		    type = -1;
  		    continue;
  		}
  	    }
  	    else
  		temp = NULL;
  	    if (newlen == 0 || temp != NULL)
  	    {
  		if (hisidx[type] < 0)		/* there are no entries yet */
  		{
  		    for (i = 0; i < newlen; ++i)
  		    {
  			temp[i].hisnum = 0;
  			temp[i].hisstr = NULL;
  		    }
  		}
  		else if (newlen > hislen)	/* array becomes bigger */
  		{
  		    for (i = 0; i <= hisidx[type]; ++i)
  			temp[i] = history[type][i];
  		    j = i;
  		    for ( ; i <= newlen - (hislen - hisidx[type]); ++i)
  		    {
  			temp[i].hisnum = 0;
  			temp[i].hisstr = NULL;
  		    }
  		    for ( ; j < hislen; ++i, ++j)
  			temp[i] = history[type][j];
  		}
  		else				/* array becomes smaller or 0 */
  		{
  		    j = hisidx[type];
  		    for (i = newlen - 1; ; --i)
  		    {
  			if (i >= 0)		/* copy newest entries */
  			    temp[i] = history[type][j];
  			else			/* remove older entries */
  			    vim_free(history[type][j].hisstr);
  			if (--j < 0)
  			    j = hislen - 1;
  			if (j == hisidx[type])
  			    break;
  		    }
  		    hisidx[type] = newlen - 1;
  		}
  		vim_free(history[type]);
  		history[type] = temp;
  	    }
  	}
  	hislen = newlen;
      }
  }
  
  /*
   * Check if command line 'str' is already in history.
   * If 'move_to_front' is TRUE, matching entry is moved to end of history.
   */
      static int
  in_history(type, str, move_to_front)
      int	    type;
      char_u  *str;
      int	    move_to_front;	/* Move the entry to the front if it exists */
  {
      int	    i;
      int	    last_i = -1;
  
      if (hisidx[type] < 0)
  	return FALSE;
      i = hisidx[type];
      do
      {
  	if (history[type][i].hisstr == NULL)
  	    return FALSE;
  	if (STRCMP(str, history[type][i].hisstr) == 0)
  	{
  	    if (!move_to_front)
  		return TRUE;
  	    last_i = i;
  	    break;
  	}
  	if (--i < 0)
  	    i = hislen - 1;
      } while (i != hisidx[type]);
  
      if (last_i >= 0)
      {
  	str = history[type][i].hisstr;
  	while (i != hisidx[type])
  	{
  	    if (++i >= hislen)
  		i = 0;
  	    history[type][last_i] = history[type][i];
  	    last_i = i;
  	}
  	history[type][i].hisstr = str;
  	history[type][i].hisnum = ++hisnum[type];
  	return TRUE;
      }
      return FALSE;
  }
  
  /*
   * Convert history name (from table above) to its HIST_ equivalent.
   * When "name" is empty, return "cmd" history.
   * Returns -1 for unknown history name.
   */
      int
  get_histtype(name)
      char_u	*name;
  {
      int		i;
      int		len = (int)STRLEN(name);
  
      /* No argument: use current history. */
      if (len == 0)
  	return hist_char2type(ccline.cmdfirstc);
  
      for (i = 0; history_names[i] != NULL; ++i)
  	if (STRNICMP(name, history_names[i], len) == 0)
  	    return i;
  
      if (vim_strchr((char_u *)":=@>?/", name[0]) != NULL && name[1] == NUL)
  	return hist_char2type(name[0]);
  
      return -1;
  }
  
  static int	last_maptick = -1;	/* last seen maptick */
  
  /*
   * Add the given string to the given history.  If the string is already in the
   * history then it is moved to the front.  "histype" may be one of he HIST_
   * values.
   */
      void
  add_to_history(histype, new_entry, in_map, sep)
      int		histype;
      char_u	*new_entry;
      int		in_map;		/* consider maptick when inside a mapping */
      int		sep;		/* separator character used (search hist) */
  {
      histentry_T	*hisptr;
      int		len;
  
      if (hislen == 0)		/* no history */
  	return;
  
      /*
       * Searches inside the same mapping overwrite each other, so that only
       * the last line is kept.  Be careful not to remove a line that was moved
       * down, only lines that were added.
       */
      if (histype == HIST_SEARCH && in_map)
      {
  	if (maptick == last_maptick)
  	{
  	    /* Current line is from the same mapping, remove it */
  	    hisptr = &history[HIST_SEARCH][hisidx[HIST_SEARCH]];
  	    vim_free(hisptr->hisstr);
  	    hisptr->hisstr = NULL;
  	    hisptr->hisnum = 0;
  	    --hisnum[histype];
  	    if (--hisidx[HIST_SEARCH] < 0)
  		hisidx[HIST_SEARCH] = hislen - 1;
  	}
  	last_maptick = -1;
      }
      if (!in_history(histype, new_entry, TRUE))
      {
  	if (++hisidx[histype] == hislen)
  	    hisidx[histype] = 0;
  	hisptr = &history[histype][hisidx[histype]];
  	vim_free(hisptr->hisstr);
  
  	/* Store the separator after the NUL of the string. */
  	len = (int)STRLEN(new_entry);
  	hisptr->hisstr = vim_strnsave(new_entry, len + 2);
  	if (hisptr->hisstr != NULL)
  	    hisptr->hisstr[len + 1] = sep;
  
  	hisptr->hisnum = ++hisnum[histype];
  	if (histype == HIST_SEARCH && in_map)
  	    last_maptick = maptick;
      }
  }
  
  #if defined(FEAT_EVAL) || defined(PROTO)
  
  /*
   * Get identifier of newest history entry.
   * "histype" may be one of the HIST_ values.
   */
      int
  get_history_idx(histype)
      int	    histype;
  {
      if (hislen == 0 || histype < 0 || histype >= HIST_COUNT
  		    || hisidx[histype] < 0)
  	return -1;
  
      return history[histype][hisidx[histype]].hisnum;
  }
  
  static struct cmdline_info *get_ccline_ptr __ARGS((void));
  
  /*
   * Get pointer to the command line info to use. cmdline_paste() may clear
   * ccline and put the previous value in prev_ccline.
   */
      static struct cmdline_info *
  get_ccline_ptr()
  {
      if ((State & CMDLINE) == 0)
  	return NULL;
      if (ccline.cmdbuff != NULL)
  	return &ccline;
      if (prev_ccline_used && prev_ccline.cmdbuff != NULL)
  	return &prev_ccline;
      return NULL;
  }
  
  /*
   * Get the current command line in allocated memory.
   * Only works when the command line is being edited.
   * Returns NULL when something is wrong.
   */
      char_u *
  get_cmdline_str()
  {
      struct cmdline_info *p = get_ccline_ptr();
  
      if (p == NULL)
  	return NULL;
      return vim_strnsave(p->cmdbuff, p->cmdlen);
  }
  
  /*
   * Get the current command line position, counted in bytes.
   * Zero is the first position.
   * Only works when the command line is being edited.
   * Returns -1 when something is wrong.
   */
      int
  get_cmdline_pos()
  {
      struct cmdline_info *p = get_ccline_ptr();
  
      if (p == NULL)
  	return -1;
      return p->cmdpos;
  }
  
  /*
   * Set the command line byte position to "pos".  Zero is the first position.
   * Only works when the command line is being edited.
   * Returns 1 when failed, 0 when OK.
   */
      int
  set_cmdline_pos(pos)
      int		pos;
  {
      struct cmdline_info *p = get_ccline_ptr();
  
      if (p == NULL)
  	return 1;
  
      /* The position is not set directly but after CTRL-\ e or CTRL-R = has
       * changed the command line. */
      if (pos < 0)
  	new_cmdpos = 0;
      else
  	new_cmdpos = pos;
      return 0;
  }
  
  /*
   * Get the current command-line type.
   * Returns ':' or '/' or '?' or '@' or '>' or '-'
   * Only works when the command line is being edited.
   * Returns NUL when something is wrong.
   */
      int
  get_cmdline_type()
  {
      struct cmdline_info *p = get_ccline_ptr();
  
      if (p == NULL)
  	return NUL;
      if (p->cmdfirstc == NUL)
  	return (p->input_fn) ? '@' : '-';
      return p->cmdfirstc;
  }
  
  /*
   * Calculate history index from a number:
   *   num > 0: seen as identifying number of a history entry
   *   num < 0: relative position in history wrt newest entry
   * "histype" may be one of the HIST_ values.
   */
      static int
  calc_hist_idx(histype, num)
      int		histype;
      int		num;
  {
      int		i;
      histentry_T	*hist;
      int		wrapped = FALSE;
  
      if (hislen == 0 || histype < 0 || histype >= HIST_COUNT
  		    || (i = hisidx[histype]) < 0 || num == 0)
  	return -1;
  
      hist = history[histype];
      if (num > 0)
      {
  	while (hist[i].hisnum > num)
  	    if (--i < 0)
  	    {
  		if (wrapped)
  		    break;
  		i += hislen;
  		wrapped = TRUE;
  	    }
  	if (hist[i].hisnum == num && hist[i].hisstr != NULL)
  	    return i;
      }
      else if (-num <= hislen)
      {
  	i += num + 1;
  	if (i < 0)
  	    i += hislen;
  	if (hist[i].hisstr != NULL)
  	    return i;
      }
      return -1;
  }
  
  /*
   * Get a history entry by its index.
   * "histype" may be one of the HIST_ values.
   */
      char_u *
  get_history_entry(histype, idx)
      int	    histype;
      int	    idx;
  {
      idx = calc_hist_idx(histype, idx);
      if (idx >= 0)
  	return history[histype][idx].hisstr;
      else
  	return (char_u *)"";
  }
  
  /*
   * Clear all entries of a history.
   * "histype" may be one of the HIST_ values.
   */
      int
  clr_history(histype)
      int		histype;
  {
      int		i;
      histentry_T	*hisptr;
  
      if (hislen != 0 && histype >= 0 && histype < HIST_COUNT)
      {
  	hisptr = history[histype];
  	for (i = hislen; i--;)
  	{
  	    vim_free(hisptr->hisstr);
  	    hisptr->hisnum = 0;
  	    hisptr++->hisstr = NULL;
  	}
  	hisidx[histype] = -1;	/* mark history as cleared */
  	hisnum[histype] = 0;	/* reset identifier counter */
  	return OK;
      }
      return FAIL;
  }
  
  /*
   * Remove all entries matching {str} from a history.
   * "histype" may be one of the HIST_ values.
   */
      int
  del_history_entry(histype, str)
      int		histype;
      char_u	*str;
  {
      regmatch_T	regmatch;
      histentry_T	*hisptr;
      int		idx;
      int		i;
      int		last;
      int		found = FALSE;
  
      regmatch.regprog = NULL;
      regmatch.rm_ic = FALSE;	/* always match case */
      if (hislen != 0
  	    && histype >= 0
  	    && histype < HIST_COUNT
  	    && *str != NUL
  	    && (idx = hisidx[histype]) >= 0
  	    && (regmatch.regprog = vim_regcomp(str, RE_MAGIC + RE_STRING))
  								      != NULL)
      {
  	i = last = idx;
  	do
  	{
  	    hisptr = &history[histype][i];
  	    if (hisptr->hisstr == NULL)
  		break;
  	    if (vim_regexec(&regmatch, hisptr->hisstr, (colnr_T)0))
  	    {
  		found = TRUE;
  		vim_free(hisptr->hisstr);
  		hisptr->hisstr = NULL;
  		hisptr->hisnum = 0;
  	    }
  	    else
  	    {
  		if (i != last)
  		{
  		    history[histype][last] = *hisptr;
  		    hisptr->hisstr = NULL;
  		    hisptr->hisnum = 0;
  		}
  		if (--last < 0)
  		    last += hislen;
  	    }
  	    if (--i < 0)
  		i += hislen;
  	} while (i != idx);
  	if (history[histype][idx].hisstr == NULL)
  	    hisidx[histype] = -1;
      }
      vim_free(regmatch.regprog);
      return found;
  }
  
  /*
   * Remove an indexed entry from a history.
   * "histype" may be one of the HIST_ values.
   */
      int
  del_history_idx(histype, idx)
      int	    histype;
      int	    idx;
  {
      int	    i, j;
  
      i = calc_hist_idx(histype, idx);
      if (i < 0)
  	return FALSE;
      idx = hisidx[histype];
      vim_free(history[histype][i].hisstr);
  
      /* When deleting the last added search string in a mapping, reset
       * last_maptick, so that the last added search string isn't deleted again.
       */
      if (histype == HIST_SEARCH && maptick == last_maptick && i == idx)
  	last_maptick = -1;
  
      while (i != idx)
      {
  	j = (i + 1) % hislen;
  	history[histype][i] = history[histype][j];
  	i = j;
      }
      history[histype][i].hisstr = NULL;
      history[histype][i].hisnum = 0;
      if (--i < 0)
  	i += hislen;
      hisidx[histype] = i;
      return TRUE;
  }
  
  #endif /* FEAT_EVAL */
  
  #if defined(FEAT_CRYPT) || defined(PROTO)
  /*
   * Very specific function to remove the value in ":set key=val" from the
   * history.
   */
      void
  remove_key_from_history()
  {
      char_u	*p;
      int		i;
  
      i = hisidx[HIST_CMD];
      if (i < 0)
  	return;
      p = history[HIST_CMD][i].hisstr;
      if (p != NULL)
  	for ( ; *p; ++p)
  	    if (STRNCMP(p, "key", 3) == 0 && !isalpha(p[3]))
  	    {
  		p = vim_strchr(p + 3, '=');
  		if (p == NULL)
  		    break;
  		++p;
  		for (i = 0; p[i] && !vim_iswhite(p[i]); ++i)
  		    if (p[i] == '\\' && p[i + 1])
  			++i;
  		STRMOVE(p, p + i);
  		--p;
  	    }
  }
  #endif
  
  #endif /* FEAT_CMDHIST */
  
  #if defined(FEAT_QUICKFIX) || defined(FEAT_CMDHIST) || defined(PROTO)
  /*
   * Get indices "num1,num2" that specify a range within a list (not a range of
   * text lines in a buffer!) from a string.  Used for ":history" and ":clist".
   * Returns OK if parsed successfully, otherwise FAIL.
   */
      int
  get_list_range(str, num1, num2)
      char_u	**str;
      int		*num1;
      int		*num2;
  {
      int		len;
      int		first = FALSE;
      long	num;
  
      *str = skipwhite(*str);
      if (**str == '-' || vim_isdigit(**str))  /* parse "from" part of range */
      {
  	vim_str2nr(*str, NULL, &len, FALSE, FALSE, &num, NULL);
  	*str += len;
  	*num1 = (int)num;
  	first = TRUE;
      }
      *str = skipwhite(*str);
      if (**str == ',')			/* parse "to" part of range */
      {
  	*str = skipwhite(*str + 1);
  	vim_str2nr(*str, NULL, &len, FALSE, FALSE, &num, NULL);
  	if (len > 0)
  	{
  	    *num2 = (int)num;
  	    *str = skipwhite(*str + len);
  	}
  	else if (!first)		/* no number given at all */
  	    return FAIL;
      }
      else if (first)			/* only one number given */
  	*num2 = *num1;
      return OK;
  }
  #endif
  
  #if defined(FEAT_CMDHIST) || defined(PROTO)
  /*
   * :history command - print a history
   */
      void
  ex_history(eap)
      exarg_T	*eap;
  {
      histentry_T	*hist;
      int		histype1 = HIST_CMD;
      int		histype2 = HIST_CMD;
      int		hisidx1 = 1;
      int		hisidx2 = -1;
      int		idx;
      int		i, j, k;
      char_u	*end;
      char_u	*arg = eap->arg;
  
      if (hislen == 0)
      {
  	MSG(_("'history' option is zero"));
  	return;
      }
  
      if (!(VIM_ISDIGIT(*arg) || *arg == '-' || *arg == ','))
      {
  	end = arg;
  	while (ASCII_ISALPHA(*end)
  		|| vim_strchr((char_u *)":=@>/?", *end) != NULL)
  	    end++;
  	i = *end;
  	*end = NUL;
  	histype1 = get_histtype(arg);
  	if (histype1 == -1)
  	{
  	    if (STRICMP(arg, "all") == 0)
  	    {
  		histype1 = 0;
  		histype2 = HIST_COUNT-1;
  	    }
  	    else
  	    {
  		*end = i;
  		EMSG(_(e_trailing));
  		return;
  	    }
  	}
  	else
  	    histype2 = histype1;
  	*end = i;
      }
      else
  	end = arg;
      if (!get_list_range(&end, &hisidx1, &hisidx2) || *end != NUL)
      {
  	EMSG(_(e_trailing));
  	return;
      }
  
      for (; !got_int && histype1 <= histype2; ++histype1)
      {
  	STRCPY(IObuff, "\n      #  ");
  	STRCAT(STRCAT(IObuff, history_names[histype1]), " history");
  	MSG_PUTS_TITLE(IObuff);
  	idx = hisidx[histype1];
  	hist = history[histype1];
  	j = hisidx1;
  	k = hisidx2;
  	if (j < 0)
  	    j = (-j > hislen) ? 0 : hist[(hislen+j+idx+1) % hislen].hisnum;
  	if (k < 0)
  	    k = (-k > hislen) ? 0 : hist[(hislen+k+idx+1) % hislen].hisnum;
  	if (idx >= 0 && j <= k)
  	    for (i = idx + 1; !got_int; ++i)
  	    {
  		if (i == hislen)
  		    i = 0;
  		if (hist[i].hisstr != NULL
  			&& hist[i].hisnum >= j && hist[i].hisnum <= k)
  		{
  		    msg_putchar('\n');
  		    sprintf((char *)IObuff, "%c%6d  ", i == idx ? '>' : ' ',
  							      hist[i].hisnum);
  		    if (vim_strsize(hist[i].hisstr) > (int)Columns - 10)
  			trunc_string(hist[i].hisstr, IObuff + STRLEN(IObuff),
  							   (int)Columns - 10);
  		    else
  			STRCAT(IObuff, hist[i].hisstr);
  		    msg_outtrans(IObuff);
  		    out_flush();
  		}
  		if (i == idx)
  		    break;
  	    }
      }
  }
  #endif
  
  #if (defined(FEAT_VIMINFO) && defined(FEAT_CMDHIST)) || defined(PROTO)
  static char_u **viminfo_history[HIST_COUNT] = {NULL, NULL, NULL, NULL};
  static int	viminfo_hisidx[HIST_COUNT] = {0, 0, 0, 0};
  static int	viminfo_hislen[HIST_COUNT] = {0, 0, 0, 0};
  static int	viminfo_add_at_front = FALSE;
  
  static int	hist_type2char __ARGS((int type, int use_question));
  
  /*
   * Translate a history type number to the associated character.
   */
      static int
  hist_type2char(type, use_question)
      int	    type;
      int	    use_question;	    /* use '?' instead of '/' */
  {
      if (type == HIST_CMD)
  	return ':';
      if (type == HIST_SEARCH)
      {
  	if (use_question)
  	    return '?';
  	else
  	    return '/';
      }
      if (type == HIST_EXPR)
  	return '=';
      return '@';
  }
  
  /*
   * Prepare for reading the history from the viminfo file.
   * This allocates history arrays to store the read history lines.
   */
      void
  prepare_viminfo_history(asklen)
      int	    asklen;
  {
      int	    i;
      int	    num;
      int	    type;
      int	    len;
  
      init_history();
      viminfo_add_at_front = (asklen != 0);
      if (asklen > hislen)
  	asklen = hislen;
  
      for (type = 0; type < HIST_COUNT; ++type)
      {
  	/*
  	 * Count the number of empty spaces in the history list.  If there are
  	 * more spaces available than we request, then fill them up.
  	 */
  	for (i = 0, num = 0; i < hislen; i++)
  	    if (history[type][i].hisstr == NULL)
  		num++;
  	len = asklen;
  	if (num > len)
  	    len = num;
  	if (len <= 0)
  	    viminfo_history[type] = NULL;
  	else
  	    viminfo_history[type] =
  		   (char_u **)lalloc((long_u)(len * sizeof(char_u *)), FALSE);
  	if (viminfo_history[type] == NULL)
  	    len = 0;
  	viminfo_hislen[type] = len;
  	viminfo_hisidx[type] = 0;
      }
  }
  
  /*
   * Accept a line from the viminfo, store it in the history array when it's
   * new.
   */
      int
  read_viminfo_history(virp)
      vir_T	*virp;
  {
      int		type;
      long_u	len;
      char_u	*val;
      char_u	*p;
  
      type = hist_char2type(virp->vir_line[0]);
      if (viminfo_hisidx[type] < viminfo_hislen[type])
      {
  	val = viminfo_readstring(virp, 1, TRUE);
  	if (val != NULL && *val != NUL)
  	{
  	    if (!in_history(type, val + (type == HIST_SEARCH),
  							viminfo_add_at_front))
  	    {
  		/* Need to re-allocate to append the separator byte. */
  		len = STRLEN(val);
  		p = lalloc(len + 2, TRUE);
  		if (p != NULL)
  		{
  		    if (type == HIST_SEARCH)
  		    {
  			/* Search entry: Move the separator from the first
  			 * column to after the NUL. */
  			mch_memmove(p, val + 1, (size_t)len);
  			p[len] = (*val == ' ' ? NUL : *val);
  		    }
  		    else
  		    {
  			/* Not a search entry: No separator in the viminfo
  			 * file, add a NUL separator. */
  			mch_memmove(p, val, (size_t)len + 1);
  			p[len + 1] = NUL;
  		    }
  		    viminfo_history[type][viminfo_hisidx[type]++] = p;
  		}
  	    }
  	}
  	vim_free(val);
      }
      return viminfo_readline(virp);
  }
  
      void
  finish_viminfo_history()
  {
      int idx;
      int i;
      int	type;
  
      for (type = 0; type < HIST_COUNT; ++type)
      {
  	if (history[type] == NULL)
  	    return;
  	idx = hisidx[type] + viminfo_hisidx[type];
  	if (idx >= hislen)
  	    idx -= hislen;
  	else if (idx < 0)
  	    idx = hislen - 1;
  	if (viminfo_add_at_front)
  	    hisidx[type] = idx;
  	else
  	{
  	    if (hisidx[type] == -1)
  		hisidx[type] = hislen - 1;
  	    do
  	    {
  		if (history[type][idx].hisstr != NULL)
  		    break;
  		if (++idx == hislen)
  		    idx = 0;
  	    } while (idx != hisidx[type]);
  	    if (idx != hisidx[type] && --idx < 0)
  		idx = hislen - 1;
  	}
  	for (i = 0; i < viminfo_hisidx[type]; i++)
  	{
  	    vim_free(history[type][idx].hisstr);
  	    history[type][idx].hisstr = viminfo_history[type][i];
  	    if (--idx < 0)
  		idx = hislen - 1;
  	}
  	idx += 1;
  	idx %= hislen;
  	for (i = 0; i < viminfo_hisidx[type]; i++)
  	{
  	    history[type][idx++].hisnum = ++hisnum[type];
  	    idx %= hislen;
  	}
  	vim_free(viminfo_history[type]);
  	viminfo_history[type] = NULL;
      }
  }
  
      void
  write_viminfo_history(fp)
      FILE    *fp;
  {
      int	    i;
      int	    type;
      int	    num_saved;
      char_u  *p;
      int	    c;
  
      init_history();
      if (hislen == 0)
  	return;
      for (type = 0; type < HIST_COUNT; ++type)
      {
  	num_saved = get_viminfo_parameter(hist_type2char(type, FALSE));
  	if (num_saved == 0)
  	    continue;
  	if (num_saved < 0)  /* Use default */
  	    num_saved = hislen;
  	fprintf(fp, _("\n# %s History (newest to oldest):\n"),
  			    type == HIST_CMD ? _("Command Line") :
  			    type == HIST_SEARCH ? _("Search String") :
  			    type == HIST_EXPR ?  _("Expression") :
  					_("Input Line"));
  	if (num_saved > hislen)
  	    num_saved = hislen;
  	i = hisidx[type];
  	if (i >= 0)
  	    while (num_saved--)
  	    {
  		p = history[type][i].hisstr;
  		if (p != NULL)
  		{
  		    fputc(hist_type2char(type, TRUE), fp);
  		    /* For the search history: put the separator in the second
  		     * column; use a space if there isn't one. */
  		    if (type == HIST_SEARCH)
  		    {
  			c = p[STRLEN(p) + 1];
  			putc(c == NUL ? ' ' : c, fp);
  		    }
  		    viminfo_writestring(fp, p);
  		}
  		if (--i < 0)
  		    i = hislen - 1;
  	    }
      }
  }
  #endif /* FEAT_VIMINFO */
  
  #if defined(FEAT_FKMAP) || defined(PROTO)
  /*
   * Write a character at the current cursor+offset position.
   * It is directly written into the command buffer block.
   */
      void
  cmd_pchar(c, offset)
      int	    c, offset;
  {
      if (ccline.cmdpos + offset >= ccline.cmdlen || ccline.cmdpos + offset < 0)
      {
  	EMSG(_("E198: cmd_pchar beyond the command length"));
  	return;
      }
      ccline.cmdbuff[ccline.cmdpos + offset] = (char_u)c;
      ccline.cmdbuff[ccline.cmdlen] = NUL;
  }
  
      int
  cmd_gchar(offset)
      int	    offset;
  {
      if (ccline.cmdpos + offset >= ccline.cmdlen || ccline.cmdpos + offset < 0)
      {
  	/*  EMSG(_("cmd_gchar beyond the command length")); */
  	return NUL;
      }
      return (int)ccline.cmdbuff[ccline.cmdpos + offset];
  }
  #endif
  
  #if defined(FEAT_CMDWIN) || defined(PROTO)
  /*
   * Open a window on the current command line and history.  Allow editing in
   * the window.  Returns when the window is closed.
   * Returns:
   *	CR	 if the command is to be executed
   *	Ctrl_C	 if it is to be abandoned
   *	K_IGNORE if editing continues
   */
      static int
  ex_window()
  {
      struct cmdline_info	save_ccline;
      buf_T		*old_curbuf = curbuf;
      win_T		*old_curwin = curwin;
      buf_T		*bp;
      win_T		*wp;
      int			i;
      linenr_T		lnum;
      int			histtype;
      garray_T		winsizes;
  #ifdef FEAT_AUTOCMD
      char_u		typestr[2];
  #endif
      int			save_restart_edit = restart_edit;
      int			save_State = State;
      int			save_exmode = exmode_active;
  #ifdef FEAT_RIGHTLEFT
      int			save_cmdmsg_rl = cmdmsg_rl;
  #endif
  
      /* Can't do this recursively.  Can't do it when typing a password. */
      if (cmdwin_type != 0
  # if defined(FEAT_CRYPT) || defined(FEAT_EVAL)
  	    || cmdline_star > 0
  # endif
  	    )
      {
  	beep_flush();
  	return K_IGNORE;
      }
  
      /* Save current window sizes. */
      win_size_save(&winsizes);
  
  # ifdef FEAT_AUTOCMD
      /* Don't execute autocommands while creating the window. */
      block_autocmds();
  # endif
      /* don't use a new tab page */
      cmdmod.tab = 0;
  
  # ifdef FEAT_GDB
      /* Split below the displayed gdb window */
      if (gdb_iswinput(gdb) && (wp = gdb_window(gdb)) != NULL
  	    && (wp = wp->w_next) != NULL)
      {
  	linenr_T topline;
  	
  	curwin = wp;
  	curbuf = curwin->w_buffer;
  	topline = curwin->w_topline;
  
  	if (win_split((int)p_cwh, WSP_ABOVE) == FAIL)
  	{
  	    curwin = old_curwin;
  	    curbuf = old_curbuf;
  	    beep_flush();
  	    return K_IGNORE;
  	}
  
  	/* Do not scroll the window below gdb window */
  	set_topline(wp, topline + p_cwh + STATUS_HEIGHT);
      }
      else
  # endif
      /* Create a window for the command-line buffer. */
      if (win_split((int)p_cwh, WSP_BOT) == FAIL)
      {
  	beep_flush();
  # ifdef FEAT_AUTOCMD
  	unblock_autocmds();
  # endif
  	return K_IGNORE;
      }
      cmdwin_type = ccline.cmdfirstc;
      if (cmdwin_type == NUL)
  	cmdwin_type = '-';
  
      /* Create the command-line buffer empty. */
      (void)do_ecmd(0, NULL, NULL, NULL, ECMD_ONE, ECMD_HIDE);
      (void)setfname(curbuf, (char_u *)"[Command Line]", NULL, TRUE);
      set_option_value((char_u *)"bt", 0L, (char_u *)"nofile", OPT_LOCAL);
      set_option_value((char_u *)"swf", 0L, NULL, OPT_LOCAL);
      curbuf->b_p_ma = TRUE;
  # ifdef FEAT_RIGHTLEFT
      curwin->w_p_rl = cmdmsg_rl;
      cmdmsg_rl = FALSE;
  # endif
  # ifdef FEAT_SCROLLBIND
      curwin->w_p_scb = FALSE;
  # endif
  
  # ifdef FEAT_AUTOCMD
      /* Do execute autocommands for setting the filetype (load syntax). */
      unblock_autocmds();
  # endif
  
      /* Showing the prompt may have set need_wait_return, reset it. */
      need_wait_return = FALSE;
  
      histtype = hist_char2type(ccline.cmdfirstc);
      if (histtype == HIST_CMD || histtype == HIST_DEBUG)
      {
  	if (p_wc == TAB)
  	{
  	    add_map((char_u *)"<buffer> <Tab> <C-X><C-V>", INSERT);
  	    add_map((char_u *)"<buffer> <Tab> a<C-X><C-V>", NORMAL);
  	}
  	set_option_value((char_u *)"ft", 0L, (char_u *)"vim", OPT_LOCAL);
      }
  
  # ifdef FEAT_GDB
      if (gdb_iswinput(gdb))      /* gdb window input-line */
      {
  	add_map((char_u *)"<buffer> <C-Z> <C-Z><CR>", INSERT);
  	add_map((char_u *)"<buffer> <Tab> <C-Q><C-I><CR>", INSERT);
  	set_option_value((char_u *)"ft", 0L, (char_u *)"gdb", OPT_LOCAL);
  	set_option_value((char_u *)"fdc", 0L, NULL, OPT_LOCAL);
  
          /* The window search-line does not have this: with a two lines history,
  	 * the window shows an empty line at top */
          curwin->w_valid = FALSE;
      }
  # endif
  
      /* Reset 'textwidth' after setting 'filetype' (the Vim filetype plugin
       * sets 'textwidth' to 78). */
      curbuf->b_p_tw = 0;
  
      /* Fill the buffer with the history. */
      init_history();
      if (hislen > 0)
      {
  	i = hisidx[histtype];
  	if (i >= 0)
  	{
  	    lnum = 0;
  	    do
  	    {
  		if (++i == hislen)
  		    i = 0;
  		if (history[histtype][i].hisstr != NULL)
  		    ml_append(lnum++, history[histtype][i].hisstr,
  							   (colnr_T)0, FALSE);
  	    }
  	    while (i != hisidx[histtype]);
  	}
      }
  
      /* Replace the empty last line with the current command-line and put the
       * cursor there. */
      ml_replace(curbuf->b_ml.ml_line_count, ccline.cmdbuff, TRUE);
      curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
      curwin->w_cursor.col = ccline.cmdpos;
      changed_line_abv_curs();
      invalidate_botline();
      redraw_later(SOME_VALID);
  
      /* Save the command line info, can be used recursively. */
      save_ccline = ccline;
      ccline.cmdbuff = NULL;
      ccline.cmdprompt = NULL;
  
      /* No Ex mode here! */
      exmode_active = 0;
  
      State = NORMAL;
  # ifdef FEAT_MOUSE
      setmouse();
  # endif
  
  # ifdef FEAT_AUTOCMD
      /* Trigger CmdwinEnter autocommands. */
      typestr[0] = cmdwin_type;
      typestr[1] = NUL;
      apply_autocmds(EVENT_CMDWINENTER, typestr, typestr, FALSE, curbuf);
      if (restart_edit != 0)	/* autocmd with ":startinsert" */
  	stuffcharReadbuff(K_NOP);
  # endif
  
      i = RedrawingDisabled;
      RedrawingDisabled = 0;
  
      /*
       * Call the main loop until <CR> or CTRL-C is typed.
       */
      cmdwin_result = 0;
      main_loop(TRUE, FALSE);
  
      RedrawingDisabled = i;
  
  # ifdef FEAT_AUTOCMD
      /* Trigger CmdwinLeave autocommands. */
      apply_autocmds(EVENT_CMDWINLEAVE, typestr, typestr, FALSE, curbuf);
  # endif
  
      /* Restore the command line info. */
      ccline = save_ccline;
      cmdwin_type = 0;
  
      exmode_active = save_exmode;
  
      /* Safety check: The old window or buffer was deleted: It's a bug when
       * this happens! */
      if (!win_valid(old_curwin) || !buf_valid(old_curbuf))
      {
  	cmdwin_result = Ctrl_C;
  	EMSG(_("E199: Active window or buffer deleted"));
      }
      else
      {
  # if defined(FEAT_AUTOCMD) && defined(FEAT_EVAL)
  	/* autocmds may abort script processing */
  	if (aborting() && cmdwin_result != K_IGNORE)
  	    cmdwin_result = Ctrl_C;
  # endif
  	/* Set the new command line from the cmdline buffer. */
  	vim_free(ccline.cmdbuff);
  	if (cmdwin_result == K_XF1 || cmdwin_result == K_XF2) /* :qa[!] typed */
  	{
  	    char *p = (cmdwin_result == K_XF2) ? "qa" : "qa!";
  
  	    if (histtype == HIST_CMD)
  	    {
  		/* Execute the command directly. */
  		ccline.cmdbuff = vim_strsave((char_u *)p);
  		cmdwin_result = CAR;
  	    }
  	    else
  	    {
  		/* First need to cancel what we were doing. */
  		ccline.cmdbuff = NULL;
  		stuffcharReadbuff(':');
  		stuffReadbuff((char_u *)p);
  		stuffcharReadbuff(CAR);
  	    }
  	}
  	else if (cmdwin_result == K_XF2)	/* :qa typed */
  	{
  	    ccline.cmdbuff = vim_strsave((char_u *)"qa");
  	    cmdwin_result = CAR;
  	}
  	else
  	    ccline.cmdbuff = vim_strsave(ml_get_curline());
  	if (ccline.cmdbuff == NULL)
  	    cmdwin_result = Ctrl_C;
  	else
  	{
  #ifdef FEAT_GDB
              if (ccline.cmdfirstc == '@')
                  ccline.cmdfirstc = NUL;
  #endif
  	    ccline.cmdlen = (int)STRLEN(ccline.cmdbuff);
  	    ccline.cmdbufflen = ccline.cmdlen + 1;
  	    ccline.cmdpos = curwin->w_cursor.col;
  	    if (ccline.cmdpos > ccline.cmdlen)
  		ccline.cmdpos = ccline.cmdlen;
  	    if (cmdwin_result == K_IGNORE)
  	    {
  		set_cmdspos_cursor();
  		redrawcmd();
  	    }
  	}
  
  # ifdef FEAT_AUTOCMD
  	/* Don't execute autocommands while deleting the window. */
  	block_autocmds();
  # endif
  	wp = curwin;
  	bp = curbuf;
  	win_goto(old_curwin);
  	win_close(wp, TRUE);
  	close_buffer(NULL, bp, DOBUF_WIPE);
  
  	/* Restore window sizes. */
  	win_size_restore(&winsizes);
  
  # ifdef FEAT_AUTOCMD
  	unblock_autocmds();
  # endif
      }
  
      ga_clear(&winsizes);
      restart_edit = save_restart_edit;
  # ifdef FEAT_RIGHTLEFT
      cmdmsg_rl = save_cmdmsg_rl;
  # endif
  
      State = save_State;
  # ifdef FEAT_MOUSE
      setmouse();
  # endif
  
      return cmdwin_result;
  }
  #endif /* FEAT_CMDWIN */
  
  /*
   * Used for commands that either take a simple command string argument, or:
   *	cmd << endmarker
   *	  {script}
   *	endmarker
   * Returns a pointer to allocated memory with {script} or NULL.
   */
      char_u *
  script_get(eap, cmd)
      exarg_T	*eap;
      char_u	*cmd;
  {
      char_u	*theline;
      char	*end_pattern = NULL;
      char	dot[] = ".";
      garray_T	ga;
  
      if (cmd[0] != '<' || cmd[1] != '<' || eap->getline == NULL)
  	return NULL;
  
      ga_init2(&ga, 1, 0x400);
  
      if (cmd[2] != NUL)
  	end_pattern = (char *)skipwhite(cmd + 2);
      else
  	end_pattern = dot;
  
      for (;;)
      {
  	theline = eap->getline(
  #ifdef FEAT_EVAL
  	    eap->cstack->cs_looplevel > 0 ? -1 :
  #endif
  	    NUL, eap->cookie, 0);
  
  	if (theline == NULL || STRCMP(end_pattern, theline) == 0)
  	{
  	    vim_free(theline);
  	    break;
  	}
  
  	ga_concat(&ga, theline);
  	ga_append(&ga, '\n');
  	vim_free(theline);
      }
      ga_append(&ga, NUL);
  
      return (char_u *)ga.ga_data;
  }
  