text: /* vi:set ts=8 sts=4 sw=4 noet:
   *
   * VIM - Vi IMproved	by Bram Moolenaar
   *
   * Do ":help uganda"  in Vim to read copying and usage conditions.
   * Do ":help credits" in Vim to see a list of people who contributed.
   * See README.txt for an overview of the Vim source code.
   */
  
  /*
   * ops.c: implementation of various operators: op_shift, op_delete, op_tilde,
   *	  op_change, op_yank, do_join
   */
  
  #include "vim.h"
  
  static void shift_block(oparg_T *oap, int amount);
  static void	mb_adjust_opend(oparg_T *oap);
  static int	do_addsub(int op_type, pos_T *pos, int length, linenr_T Prenum1);
  
  // Flags for third item in "opchars".
  #define OPF_LINES  1	// operator always works on lines
  #define OPF_CHANGE 2	// operator changes text
  
  /*
   * The names of operators.
   * IMPORTANT: Index must correspond with defines in vim.h!!!
   * The third field holds OPF_ flags.
   */
  static char opchars[][3] =
  {
      {NUL, NUL, 0},			// OP_NOP
      {'d', NUL, OPF_CHANGE},		// OP_DELETE
      {'y', NUL, 0},			// OP_YANK
      {'c', NUL, OPF_CHANGE},		// OP_CHANGE
      {'<', NUL, OPF_LINES | OPF_CHANGE},	// OP_LSHIFT
      {'>', NUL, OPF_LINES | OPF_CHANGE},	// OP_RSHIFT
      {'!', NUL, OPF_LINES | OPF_CHANGE},	// OP_FILTER
      {'g', '~', OPF_CHANGE},		// OP_TILDE
      {'=', NUL, OPF_LINES | OPF_CHANGE},	// OP_INDENT
      {'g', 'q', OPF_LINES | OPF_CHANGE},	// OP_FORMAT
      {':', NUL, OPF_LINES},		// OP_COLON
      {'g', 'U', OPF_CHANGE},		// OP_UPPER
      {'g', 'u', OPF_CHANGE},		// OP_LOWER
      {'J', NUL, OPF_LINES | OPF_CHANGE},	// DO_JOIN
      {'g', 'J', OPF_LINES | OPF_CHANGE},	// DO_JOIN_NS
      {'g', '?', OPF_CHANGE},		// OP_ROT13
      {'r', NUL, OPF_CHANGE},		// OP_REPLACE
      {'I', NUL, OPF_CHANGE},		// OP_INSERT
      {'A', NUL, OPF_CHANGE},		// OP_APPEND
      {'z', 'f', OPF_LINES},		// OP_FOLD
      {'z', 'o', OPF_LINES},		// OP_FOLDOPEN
      {'z', 'O', OPF_LINES},		// OP_FOLDOPENREC
      {'z', 'c', OPF_LINES},		// OP_FOLDCLOSE
      {'z', 'C', OPF_LINES},		// OP_FOLDCLOSEREC
      {'z', 'd', OPF_LINES},		// OP_FOLDDEL
      {'z', 'D', OPF_LINES},		// OP_FOLDDELREC
      {'g', 'w', OPF_LINES | OPF_CHANGE},	// OP_FORMAT2
      {'g', '@', OPF_CHANGE},		// OP_FUNCTION
      {Ctrl_A, NUL, OPF_CHANGE},		// OP_NR_ADD
      {Ctrl_X, NUL, OPF_CHANGE},		// OP_NR_SUB
  };
  
  /*
   * Translate a command name into an operator type.
   * Must only be called with a valid operator name!
   */
      int
  get_op_type(int char1, int char2)
  {
      int		i;
  
      if (char1 == 'r')		// ignore second character
  	return OP_REPLACE;
      if (char1 == '~')		// when tilde is an operator
  	return OP_TILDE;
      if (char1 == 'g' && char2 == Ctrl_A)	// add
  	return OP_NR_ADD;
      if (char1 == 'g' && char2 == Ctrl_X)	// subtract
  	return OP_NR_SUB;
      if (char1 == 'z' && char2 == 'y')	// OP_YANK
  	return OP_YANK;
      for (i = 0; ; ++i)
      {
  	if (opchars[i][0] == char1 && opchars[i][1] == char2)
  	    break;
  	if (i == (int)ARRAY_LENGTH(opchars) - 1)
  	{
  	    internal_error("get_op_type()");
  	    break;
  	}
      }
      return i;
  }
  
  /*
   * Return TRUE if operator "op" always works on whole lines.
   */
      static int
  op_on_lines(int op)
  {
      return opchars[op][2] & OPF_LINES;
  }
  
  #if defined(FEAT_JOB_CHANNEL) || defined(PROTO)
  /*
   * Return TRUE if operator "op" changes text.
   */
      int
  op_is_change(int op)
  {
      return opchars[op][2] & OPF_CHANGE;
  }
  #endif
  
  /*
   * Get first operator command character.
   * Returns 'g' or 'z' if there is another command character.
   */
      int
  get_op_char(int optype)
  {
      return opchars[optype][0];
  }
  
  /*
   * Get second operator command character.
   */
      int
  get_extra_op_char(int optype)
  {
      return opchars[optype][1];
  }
  
  /*
   * op_shift - handle a shift operation
   */
      void
  op_shift(oparg_T *oap, int curs_top, int amount)
  {
      long	    i;
      int		    first_char;
      int		    block_col = 0;
  
      if (u_save((linenr_T)(oap->start.lnum - 1),
  				       (linenr_T)(oap->end.lnum + 1)) == FAIL)
  	return;
  
      if (oap->block_mode)
  	block_col = curwin->w_cursor.col;
  
      for (i = oap->line_count; --i >= 0; )
      {
  	first_char = *ml_get_curline();
  	if (first_char == NUL)				// empty line
  	    curwin->w_cursor.col = 0;
  	else if (oap->block_mode)
  	    shift_block(oap, amount);
  	else
  	    // Move the line right if it doesn't start with '#', 'smartindent'
  	    // isn't set or 'cindent' isn't set or '#' isn't in 'cino'.
  #if defined(FEAT_SMARTINDENT) || defined(FEAT_CINDENT)
  	    if (first_char != '#' || !preprocs_left())
  #endif
  	    shift_line(oap->op_type == OP_LSHIFT, p_sr, amount, FALSE);
  	++curwin->w_cursor.lnum;
      }
  
      changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L);
      if (oap->block_mode)
      {
  	curwin->w_cursor.lnum = oap->start.lnum;
  	curwin->w_cursor.col = block_col;
      }
      else if (curs_top)	    // put cursor on first line, for ">>"
      {
  	curwin->w_cursor.lnum = oap->start.lnum;
  	beginline(BL_SOL | BL_FIX);   // shift_line() may have set cursor.col
      }
      else
  	--curwin->w_cursor.lnum;	// put cursor on last line, for ":>"
  
  #ifdef FEAT_FOLDING
      // The cursor line is not in a closed fold
      foldOpenCursor();
  #endif
  
  
      if (oap->line_count > p_report)
      {
  	char	    *op;
  	char	    *msg_line_single;
  	char	    *msg_line_plural;
  
  	if (oap->op_type == OP_RSHIFT)
  	    op = ">";
  	else
  	    op = "<";
  	msg_line_single = NGETTEXT("%ld line %sed %d time",
  					     "%ld line %sed %d times", amount);
  	msg_line_plural = NGETTEXT("%ld lines %sed %d time",
  					    "%ld lines %sed %d times", amount);
  	vim_snprintf((char *)IObuff, IOSIZE,
  		NGETTEXT(msg_line_single, msg_line_plural, oap->line_count),
  		oap->line_count, op, amount);
  	msg_attr_keep((char *)IObuff, 0, TRUE);
      }
  
      if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
      {
  	// Set "'[" and "']" marks.
  	curbuf->b_op_start = oap->start;
  	curbuf->b_op_end.lnum = oap->end.lnum;
  	curbuf->b_op_end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
  	if (curbuf->b_op_end.col > 0)
  	    --curbuf->b_op_end.col;
      }
  }
  
  /*
   * Shift the current line one shiftwidth left (if left != 0) or right
   * leaves cursor on first blank in the line.
   */
      void
  shift_line(
      int	left,
      int	round,
      int	amount,
      int call_changed_bytes)	// call changed_bytes()
  {
      int		count;
      int		i, j;
      int		sw_val = (int)get_sw_value_indent(curbuf);
  
      count = get_indent();	// get current indent
  
      if (round)			// round off indent
      {
  	i = count / sw_val;	// number of 'shiftwidth' rounded down
  	j = count % sw_val;	// extra spaces
  	if (j && left)		// first remove extra spaces
  	    --amount;
  	if (left)
  	{
  	    i -= amount;
  	    if (i < 0)
  		i = 0;
  	}
  	else
  	    i += amount;
  	count = i * sw_val;
      }
      else		// original vi indent
      {
  	if (left)
  	{
  	    count -= sw_val * amount;
  	    if (count < 0)
  		count = 0;
  	}
  	else
  	    count += sw_val * amount;
      }
  
      // Set new indent
      if (State & VREPLACE_FLAG)
  	change_indent(INDENT_SET, count, FALSE, NUL, call_changed_bytes);
      else
  	(void)set_indent(count, call_changed_bytes ? SIN_CHANGED : 0);
  }
  
  /*
   * Shift one line of the current block one shiftwidth right or left.
   * Leaves cursor on first character in block.
   */
      static void
  shift_block(oparg_T *oap, int amount)
  {
      int			left = (oap->op_type == OP_LSHIFT);
      int			oldstate = State;
      int			total;
      char_u		*newp, *oldp;
      int			oldcol = curwin->w_cursor.col;
      int			sw_val = (int)get_sw_value_indent(curbuf);
      int			ts_val = (int)curbuf->b_p_ts;
      struct block_def	bd;
      int			incr;
      colnr_T		ws_vcol;
      int			i = 0, j = 0;
      int			len;
  #ifdef FEAT_RIGHTLEFT
      int			old_p_ri = p_ri;
  
      p_ri = 0;			// don't want revins in indent
  #endif
  
      State = INSERT;		// don't want REPLACE for State
      block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE);
      if (bd.is_short)
  	return;
  
      // total is number of screen columns to be inserted/removed
      total = (int)((unsigned)amount * (unsigned)sw_val);
      if ((total / sw_val) != amount)
  	return; // multiplication overflow
  
      oldp = ml_get_curline();
  
      if (!left)
      {
  	/*
  	 *  1. Get start vcol
  	 *  2. Total ws vcols
  	 *  3. Divvy into TABs & spp
  	 *  4. Construct new string
  	 */
  	total += bd.pre_whitesp; // all virtual WS up to & incl a split TAB
  	ws_vcol = bd.start_vcol - bd.pre_whitesp;
  	if (bd.startspaces)
  	{
  	    if (has_mbyte)
  	    {
  		if ((*mb_ptr2len)(bd.textstart) == 1)
  		    ++bd.textstart;
  		else
  		{
  		    ws_vcol = 0;
  		    bd.startspaces = 0;
  		}
  	    }
  	    else
  		++bd.textstart;
  	}
  	for ( ; VIM_ISWHITE(*bd.textstart); )
  	{
  	    // TODO: is passing bd.textstart for start of the line OK?
  	    incr = lbr_chartabsize_adv(bd.textstart, &bd.textstart,
  						    (colnr_T)(bd.start_vcol));
  	    total += incr;
  	    bd.start_vcol += incr;
  	}
  	// OK, now total=all the VWS reqd, and textstart points at the 1st
  	// non-ws char in the block.
  #ifdef FEAT_VARTABS
  	if (!curbuf->b_p_et)
  	    tabstop_fromto(ws_vcol, ws_vcol + total,
  					ts_val, curbuf->b_p_vts_array, &i, &j);
  	else
  	    j = total;
  #else
  	if (!curbuf->b_p_et)
  	    i = ((ws_vcol % ts_val) + total) / ts_val; // number of tabs
  	if (i)
  	    j = ((ws_vcol % ts_val) + total) % ts_val; // number of spp
  	else
  	    j = total;
  #endif
  	// if we're splitting a TAB, allow for it
  	bd.textcol -= bd.pre_whitesp_c - (bd.startspaces != 0);
  	len = (int)STRLEN(bd.textstart) + 1;
  	newp = alloc(bd.textcol + i + j + len);
  	if (newp == NULL)
  	    return;
  	vim_memset(newp, NUL, (size_t)(bd.textcol + i + j + len));
  	mch_memmove(newp, oldp, (size_t)bd.textcol);
  	vim_memset(newp + bd.textcol, TAB, (size_t)i);
  	vim_memset(newp + bd.textcol + i, ' ', (size_t)j);
  	// the end
  	mch_memmove(newp + bd.textcol + i + j, bd.textstart, (size_t)len);
      }
      else // left
      {
  	colnr_T	    destination_col;	// column to which text in block will
  					// be shifted
  	char_u	    *verbatim_copy_end;	// end of the part of the line which is
  					// copied verbatim
  	colnr_T	    verbatim_copy_width;// the (displayed) width of this part
  					// of line
  	unsigned    fill;		// nr of spaces that replace a TAB
  	unsigned    new_line_len;	// the length of the line after the
  					// block shift
  	size_t	    block_space_width;
  	size_t	    shift_amount;
  	char_u	    *non_white = bd.textstart;
  	colnr_T	    non_white_col;
  
  	/*
  	 * Firstly, let's find the first non-whitespace character that is
  	 * displayed after the block's start column and the character's column
  	 * number. Also, let's calculate the width of all the whitespace
  	 * characters that are displayed in the block and precede the searched
  	 * non-whitespace character.
  	 */
  
  	// If "bd.startspaces" is set, "bd.textstart" points to the character,
  	// the part of which is displayed at the block's beginning. Let's start
  	// searching from the next character.
  	if (bd.startspaces)
  	    MB_PTR_ADV(non_white);
  
  	// The character's column is in "bd.start_vcol".
  	non_white_col = bd.start_vcol;
  
  	while (VIM_ISWHITE(*non_white))
  	{
  	    incr = lbr_chartabsize_adv(bd.textstart, &non_white, non_white_col);
  	    non_white_col += incr;
  	}
  
  	block_space_width = non_white_col - oap->start_vcol;
  	// We will shift by "total" or "block_space_width", whichever is less.
  	shift_amount = (block_space_width < (size_t)total
  					 ? block_space_width : (size_t)total);
  
  	// The column to which we will shift the text.
  	destination_col = (colnr_T)(non_white_col - shift_amount);
  
  	// Now let's find out how much of the beginning of the line we can
  	// reuse without modification.
  	verbatim_copy_end = bd.textstart;
  	verbatim_copy_width = bd.start_vcol;
  
  	// If "bd.startspaces" is set, "bd.textstart" points to the character
  	// preceding the block. We have to subtract its width to obtain its
  	// column number.
  	if (bd.startspaces)
  	    verbatim_copy_width -= bd.start_char_vcols;
  	while (verbatim_copy_width < destination_col)
  	{
  	    char_u *line = verbatim_copy_end;
  
  	    // TODO: is passing verbatim_copy_end for start of the line OK?
  	    incr = lbr_chartabsize(line, verbatim_copy_end,
  							 verbatim_copy_width);
  	    if (verbatim_copy_width + incr > destination_col)
  		break;
  	    verbatim_copy_width += incr;
  	    MB_PTR_ADV(verbatim_copy_end);
  	}
  
  	// If "destination_col" is different from the width of the initial
  	// part of the line that will be copied, it means we encountered a tab
  	// character, which we will have to partly replace with spaces.
  	fill = destination_col - verbatim_copy_width;
  
  	// The replacement line will consist of:
  	// - the beginning of the original line up to "verbatim_copy_end",
  	// - "fill" number of spaces,
  	// - the rest of the line, pointed to by non_white.
  	new_line_len = (unsigned)(verbatim_copy_end - oldp)
  		       + fill
  		       + (unsigned)STRLEN(non_white) + 1;
  
  	newp = alloc(new_line_len);
  	if (newp == NULL)
  	    return;
  	mch_memmove(newp, oldp, (size_t)(verbatim_copy_end - oldp));
  	vim_memset(newp + (verbatim_copy_end - oldp), ' ', (size_t)fill);
  	STRMOVE(newp + (verbatim_copy_end - oldp) + fill, non_white);
      }
      // replace the line
      ml_replace(curwin->w_cursor.lnum, newp, FALSE);
      changed_bytes(curwin->w_cursor.lnum, (colnr_T)bd.textcol);
      State = oldstate;
      curwin->w_cursor.col = oldcol;
  #ifdef FEAT_RIGHTLEFT
      p_ri = old_p_ri;
  #endif
  }
  
  /*
   * Insert string "s" (b_insert ? before : after) block :AKelly
   * Caller must prepare for undo.
   */
      static void
  block_insert(
      oparg_T		*oap,
      char_u		*s,
      int			b_insert,
      struct block_def	*bdp)
  {
      int		ts_val;
      int		count = 0;	// extra spaces to replace a cut TAB
      int		spaces = 0;	// non-zero if cutting a TAB
      colnr_T	offset;		// pointer along new line
      colnr_T	startcol;	// column where insert starts
      unsigned	s_len;		// STRLEN(s)
      char_u	*newp, *oldp;	// new, old lines
      linenr_T	lnum;		// loop var
      int		oldstate = State;
  
      State = INSERT;		// don't want REPLACE for State
      s_len = (unsigned)STRLEN(s);
  
      for (lnum = oap->start.lnum + 1; lnum <= oap->end.lnum; lnum++)
      {
  	block_prep(oap, bdp, lnum, TRUE);
  	if (bdp->is_short && b_insert)
  	    continue;	// OP_INSERT, line ends before block start
  
  	oldp = ml_get(lnum);
  
  	if (b_insert)
  	{
  	    ts_val = bdp->start_char_vcols;
  	    spaces = bdp->startspaces;
  	    if (spaces != 0)
  		count = ts_val - 1; // we're cutting a TAB
  	    offset = bdp->textcol;
  	}
  	else // append
  	{
  	    ts_val = bdp->end_char_vcols;
  	    if (!bdp->is_short) // spaces = padding after block
  	    {
  		spaces = (bdp->endspaces ? ts_val - bdp->endspaces : 0);
  		if (spaces != 0)
  		    count = ts_val - 1; // we're cutting a TAB
  		offset = bdp->textcol + bdp->textlen - (spaces != 0);
  	    }
  	    else // spaces = padding to block edge
  	    {
  		// if $ used, just append to EOL (ie spaces==0)
  		if (!bdp->is_MAX)
  		    spaces = (oap->end_vcol - bdp->end_vcol) + 1;
  		count = spaces;
  		offset = bdp->textcol + bdp->textlen;
  	    }
  	}
  
  	if (has_mbyte && spaces > 0)
  	{
  	    int off;
  
  	    // Avoid starting halfway a multi-byte character.
  	    if (b_insert)
  	    {
  		off = (*mb_head_off)(oldp, oldp + offset + spaces);
  	    }
  	    else
  	    {
  		off = (*mb_off_next)(oldp, oldp + offset);
  		offset += off;
  	    }
  	    spaces -= off;
  	    count -= off;
  	}
  	if (spaces < 0)  // can happen when the cursor was moved
  	    spaces = 0;
  
  	newp = alloc(STRLEN(oldp) + s_len + count + 1);
  	if (newp == NULL)
  	    continue;
  
  	// copy up to shifted part
  	mch_memmove(newp, oldp, (size_t)(offset));
  	oldp += offset;
  
  	// insert pre-padding
  	vim_memset(newp + offset, ' ', (size_t)spaces);
  	startcol = offset + spaces;
  
  	// copy the new text
  	mch_memmove(newp + startcol, s, (size_t)s_len);
  	offset += s_len;
  
  	if (spaces && !bdp->is_short)
  	{
  	    // insert post-padding
  	    vim_memset(newp + offset + spaces, ' ', (size_t)(ts_val - spaces));
  	    // We're splitting a TAB, don't copy it.
  	    oldp++;
  	    // We allowed for that TAB, remember this now
  	    count++;
  	}
  
  	if (spaces > 0)
  	    offset += count;
  	STRMOVE(newp + offset, oldp);
  
  	ml_replace(lnum, newp, FALSE);
  
  	if (b_insert)
  	    // correct any text properties
  	    inserted_bytes(lnum, startcol, s_len);
  
  	if (lnum == oap->end.lnum)
  	{
  	    // Set "']" mark to the end of the block instead of the end of
  	    // the insert in the first line.
  	    curbuf->b_op_end.lnum = oap->end.lnum;
  	    curbuf->b_op_end.col = offset;
  	}
      } // for all lnum
  
      changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L);
  
      State = oldstate;
  }
  
  /*
   * Handle a delete operation.
   *
   * Return FAIL if undo failed, OK otherwise.
   */
      int
  op_delete(oparg_T *oap)
  {
      int			n;
      linenr_T		lnum;
      char_u		*ptr;
      char_u		*newp, *oldp;
      struct block_def	bd;
      linenr_T		old_lcount = curbuf->b_ml.ml_line_count;
      int			did_yank = FALSE;
  
      if (curbuf->b_ml.ml_flags & ML_EMPTY)	    // nothing to do
  	return OK;
  
      // Nothing to delete, return here.	Do prepare undo, for op_change().
      if (oap->empty)
  	return u_save_cursor();
  
      if (!curbuf->b_p_ma)
      {
  	emsg(_(e_cannot_make_changes_modifiable_is_off));
  	return FAIL;
      }
  
  #ifdef FEAT_CLIPBOARD
      adjust_clip_reg(&oap->regname);
  #endif
  
      if (has_mbyte)
  	mb_adjust_opend(oap);
  
      /*
       * Imitate the strange Vi behaviour: If the delete spans more than one
       * line and motion_type == MCHAR and the result is a blank line, make the
       * delete linewise.  Don't do this for the change command or Visual mode.
       */
      if (       oap->motion_type == MCHAR
  	    && !oap->is_VIsual
  	    && !oap->block_mode
  	    && oap->line_count > 1
  	    && oap->motion_force == NUL
  	    && oap->op_type == OP_DELETE)
      {
  	ptr = ml_get(oap->end.lnum) + oap->end.col;
  	if (*ptr != NUL)
  	    ptr += oap->inclusive;
  	ptr = skipwhite(ptr);
  	if (*ptr == NUL && inindent(0))
  	    oap->motion_type = MLINE;
      }
  
      /*
       * Check for trying to delete (e.g. "D") in an empty line.
       * Note: For the change operator it is ok.
       */
      if (       oap->motion_type == MCHAR
  	    && oap->line_count == 1
  	    && oap->op_type == OP_DELETE
  	    && *ml_get(oap->start.lnum) == NUL)
      {
  	/*
  	 * It's an error to operate on an empty region, when 'E' included in
  	 * 'cpoptions' (Vi compatible).
  	 */
  	if (virtual_op)
  	    // Virtual editing: Nothing gets deleted, but we set the '[ and ']
  	    // marks as if it happened.
  	    goto setmarks;
  	if (vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL)
  	    beep_flush();
  	return OK;
      }
  
      /*
       * Do a yank of whatever we're about to delete.
       * If a yank register was specified, put the deleted text into that
       * register.  For the black hole register '_' don't yank anything.
       */
      if (oap->regname != '_')
      {
  	if (oap->regname != 0)
  	{
  	    // check for read-only register
  	    if (!valid_yank_reg(oap->regname, TRUE))
  	    {
  		beep_flush();
  		return OK;
  	    }
  	    get_yank_register(oap->regname, TRUE); // yank into specif'd reg.
  	    if (op_yank(oap, TRUE, FALSE) == OK)   // yank without message
  		did_yank = TRUE;
  	}
  	else
  	    reset_y_append(); // not appending to unnamed register
  
  	/*
  	 * Put deleted text into register 1 and shift number registers if the
  	 * delete contains a line break, or when using a specific operator (Vi
  	 * compatible)
  	 * Use the register name from before adjust_clip_reg() may have
  	 * changed it.
  	 */
  	if (oap->motion_type == MLINE || oap->line_count > 1
  							   || oap->use_reg_one)
  	{
  	    shift_delete_registers();
  	    if (op_yank(oap, TRUE, FALSE) == OK)
  		did_yank = TRUE;
  	}
  
  	// Yank into small delete register when no named register specified
  	// and the delete is within one line.
  	if ((
  #ifdef FEAT_CLIPBOARD
  	    ((clip_unnamed & CLIP_UNNAMED) && oap->regname == '*') ||
  	    ((clip_unnamed & CLIP_UNNAMED_PLUS) && oap->regname == '+') ||
  #endif
  	    oap->regname == 0) && oap->motion_type != MLINE
  						      && oap->line_count == 1)
  	{
  	    oap->regname = '-';
  	    get_yank_register(oap->regname, TRUE);
  	    if (op_yank(oap, TRUE, FALSE) == OK)
  		did_yank = TRUE;
  	    oap->regname = 0;
  	}
  
  	/*
  	 * If there's too much stuff to fit in the yank register, then get a
  	 * confirmation before doing the delete. This is crude, but simple.
  	 * And it avoids doing a delete of something we can't put back if we
  	 * want.
  	 */
  	if (!did_yank)
  	{
  	    int msg_silent_save = msg_silent;
  
  	    msg_silent = 0;	// must display the prompt
  	    n = ask_yesno((char_u *)_("cannot yank; delete anyway"), TRUE);
  	    msg_silent = msg_silent_save;
  	    if (n != 'y')
  	    {
  		emsg(_(e_command_aborted));
  		return FAIL;
  	    }
  	}
  
  #if defined(FEAT_EVAL)
  	if (did_yank && has_textyankpost())
  	    yank_do_autocmd(oap, get_y_current());
  #endif
      }
  
      /*
       * block mode delete
       */
      if (oap->block_mode)
      {
  	if (u_save((linenr_T)(oap->start.lnum - 1),
  			       (linenr_T)(oap->end.lnum + 1)) == FAIL)
  	    return FAIL;
  
  	for (lnum = curwin->w_cursor.lnum; lnum <= oap->end.lnum; ++lnum)
  	{
  	    block_prep(oap, &bd, lnum, TRUE);
  	    if (bd.textlen == 0)	// nothing to delete
  		continue;
  
  	    // Adjust cursor position for tab replaced by spaces and 'lbr'.
  	    if (lnum == curwin->w_cursor.lnum)
  	    {
  		curwin->w_cursor.col = bd.textcol + bd.startspaces;
  		curwin->w_cursor.coladd = 0;
  	    }
  
  	    // "n" == number of chars deleted
  	    // If we delete a TAB, it may be replaced by several characters.
  	    // Thus the number of characters may increase!
  	    n = bd.textlen - bd.startspaces - bd.endspaces;
  	    oldp = ml_get(lnum);
  	    newp = alloc(STRLEN(oldp) + 1 - n);
  	    if (newp == NULL)
  		continue;
  	    // copy up to deleted part
  	    mch_memmove(newp, oldp, (size_t)bd.textcol);
  	    // insert spaces
  	    vim_memset(newp + bd.textcol, ' ',
  				     (size_t)(bd.startspaces + bd.endspaces));
  	    // copy the part after the deleted part
  	    oldp += bd.textcol + bd.textlen;
  	    STRMOVE(newp + bd.textcol + bd.startspaces + bd.endspaces, oldp);
  	    // replace the line
  	    ml_replace(lnum, newp, FALSE);
  
  #ifdef FEAT_PROP_POPUP
  	    if (curbuf->b_has_textprop && n != 0)
  		adjust_prop_columns(lnum, bd.textcol, -n, 0);
  #endif
  	}
  
  	check_cursor_col();
  	changed_lines(curwin->w_cursor.lnum, curwin->w_cursor.col,
  						       oap->end.lnum + 1, 0L);
  	oap->line_count = 0;	    // no lines deleted
      }
      else if (oap->motion_type == MLINE)
      {
  	if (oap->op_type == OP_CHANGE)
  	{
  	    // Delete the lines except the first one.  Temporarily move the
  	    // cursor to the next line.  Save the current line number, if the
  	    // last line is deleted it may be changed.
  	    if (oap->line_count > 1)
  	    {
  		lnum = curwin->w_cursor.lnum;
  		++curwin->w_cursor.lnum;
  		del_lines((long)(oap->line_count - 1), TRUE);
  		curwin->w_cursor.lnum = lnum;
  	    }
  	    if (u_save_cursor() == FAIL)
  		return FAIL;
  	    if (curbuf->b_p_ai)		    // don't delete indent
  	    {
  		beginline(BL_WHITE);	    // cursor on first non-white
  		did_ai = TRUE;		    // delete the indent when ESC hit
  		ai_col = curwin->w_cursor.col;
  	    }
  	    else
  		beginline(0);		    // cursor in column 0
  	    truncate_line(FALSE);   // delete the rest of the line
  				    // leave cursor past last char in line
  	    if (oap->line_count > 1)
  		u_clearline();	    // "U" command not possible after "2cc"
  	}
  	else
  	{
  	    del_lines(oap->line_count, TRUE);
  	    beginline(BL_WHITE | BL_FIX);
  	    u_clearline();	// "U" command not possible after "dd"
  	}
      }
      else
      {
  	if (virtual_op)
  	{
  	    int		endcol = 0;
  
  	    // For virtualedit: break the tabs that are partly included.
  	    if (gchar_pos(&oap->start) == '\t')
  	    {
  		if (u_save_cursor() == FAIL)	// save first line for undo
  		    return FAIL;
  		if (oap->line_count == 1)
  		    endcol = getviscol2(oap->end.col, oap->end.coladd);
  		coladvance_force(getviscol2(oap->start.col, oap->start.coladd));
  		oap->start = curwin->w_cursor;
  		if (oap->line_count == 1)
  		{
  		    coladvance(endcol);
  		    oap->end.col = curwin->w_cursor.col;
  		    oap->end.coladd = curwin->w_cursor.coladd;
  		    curwin->w_cursor = oap->start;
  		}
  	    }
  
  	    // Break a tab only when it's included in the area.
  	    if (gchar_pos(&oap->end) == '\t'
  				     && (int)oap->end.coladd < oap->inclusive)
  	    {
  		// save last line for undo
  		if (u_save((linenr_T)(oap->end.lnum - 1),
  				       (linenr_T)(oap->end.lnum + 1)) == FAIL)
  		    return FAIL;
  		curwin->w_cursor = oap->end;
  		coladvance_force(getviscol2(oap->end.col, oap->end.coladd));
  		oap->end = curwin->w_cursor;
  		curwin->w_cursor = oap->start;
  	    }
  	    if (has_mbyte)
  		mb_adjust_opend(oap);
  	}
  
  	if (oap->line_count == 1)	// delete characters within one line
  	{
  	    if (u_save_cursor() == FAIL)	// save line for undo
  		return FAIL;
  
  	    // if 'cpoptions' contains '$', display '$' at end of change
  	    if (       vim_strchr(p_cpo, CPO_DOLLAR) != NULL
  		    && oap->op_type == OP_CHANGE
  		    && oap->end.lnum == curwin->w_cursor.lnum
  		    && !oap->is_VIsual)
  		display_dollar(oap->end.col - !oap->inclusive);
  
  	    n = oap->end.col - oap->start.col + 1 - !oap->inclusive;
  
  	    if (virtual_op)
  	    {
  		// fix up things for virtualedit-delete:
  		// break the tabs which are going to get in our way
  		char_u		*curline = ml_get_curline();
  		int		len = (int)STRLEN(curline);
  
  		if (oap->end.coladd != 0
  			&& (int)oap->end.col >= len - 1
  			&& !(oap->start.coladd && (int)oap->end.col >= len - 1))
  		    n++;
  		// Delete at least one char (e.g, when on a control char).
  		if (n == 0 && oap->start.coladd != oap->end.coladd)
  		    n = 1;
  
  		// When deleted a char in the line, reset coladd.
  		if (gchar_cursor() != NUL)
  		    curwin->w_cursor.coladd = 0;
  	    }
  	    (void)del_bytes((long)n, !virtual_op,
  			    oap->op_type == OP_DELETE && !oap->is_VIsual);
  	}
  	else				// delete characters between lines
  	{
  	    pos_T   curpos;
  
  	    // save deleted and changed lines for undo
  	    if (u_save((linenr_T)(curwin->w_cursor.lnum - 1),
  		 (linenr_T)(curwin->w_cursor.lnum + oap->line_count)) == FAIL)
  		return FAIL;
  
  	    truncate_line(TRUE);	// delete from cursor to end of line
  
  	    curpos = curwin->w_cursor;	// remember curwin->w_cursor
  	    ++curwin->w_cursor.lnum;
  	    del_lines((long)(oap->line_count - 2), FALSE);
  
  	    // delete from start of line until op_end
  	    n = (oap->end.col + 1 - !oap->inclusive);
  	    curwin->w_cursor.col = 0;
  	    (void)del_bytes((long)n, !virtual_op,
  			    oap->op_type == OP_DELETE && !oap->is_VIsual);
  	    curwin->w_cursor = curpos;	// restore curwin->w_cursor
  	    (void)do_join(2, FALSE, FALSE, FALSE, FALSE);
  	}
  	if (oap->op_type == OP_DELETE)
  	    auto_format(FALSE, TRUE);
      }
  
      msgmore(curbuf->b_ml.ml_line_count - old_lcount);
  
  setmarks:
      if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
      {
  	if (oap->block_mode)
  	{
  	    curbuf->b_op_end.lnum = oap->end.lnum;
  	    curbuf->b_op_end.col = oap->start.col;
  	}
  	else
  	    curbuf->b_op_end = oap->start;
  	curbuf->b_op_start = oap->start;
      }
  
      return OK;
  }
  
  /*
   * Adjust end of operating area for ending on a multi-byte character.
   * Used for deletion.
   */
      static void
  mb_adjust_opend(oparg_T *oap)
  {
      char_u	*p;
  
      if (oap->inclusive)
      {
  	p = ml_get(oap->end.lnum);
  	oap->end.col += mb_tail_off(p, p + oap->end.col);
      }
  }
  
  /*
   * Replace the character under the cursor with "c".
   * This takes care of multi-byte characters.
   */
      static void
  replace_character(int c)
  {
      int n = State;
  
      State = REPLACE;
      ins_char(c);
      State = n;
      // Backup to the replaced character.
      dec_cursor();
  }
  
  /*
   * Replace a whole area with one character.
   */
      int
  op_replace(oparg_T *oap, int c)
  {
      int			n, numc;
      int			num_chars;
      char_u		*newp, *oldp;
      size_t		oldlen;
      struct block_def	bd;
      char_u		*after_p = NULL;
      int			had_ctrl_v_cr = FALSE;
  
      if ((curbuf->b_ml.ml_flags & ML_EMPTY ) || oap->empty)
  	return OK;	    // nothing to do
  
      if (c == REPLACE_CR_NCHAR)
      {
  	had_ctrl_v_cr = TRUE;
  	c = CAR;
      }
      else if (c == REPLACE_NL_NCHAR)
      {
  	had_ctrl_v_cr = TRUE;
  	c = NL;
      }
  
      if (has_mbyte)
  	mb_adjust_opend(oap);
  
      if (u_save((linenr_T)(oap->start.lnum - 1),
  				       (linenr_T)(oap->end.lnum + 1)) == FAIL)
  	return FAIL;
  
      /*
       * block mode replace
       */
      if (oap->block_mode)
      {
  	bd.is_MAX = (curwin->w_curswant == MAXCOL);
  	for ( ; curwin->w_cursor.lnum <= oap->end.lnum; ++curwin->w_cursor.lnum)
  	{
  	    curwin->w_cursor.col = 0;  // make sure cursor position is valid
  	    block_prep(oap, &bd, curwin->w_cursor.lnum, TRUE);
  	    if (bd.textlen == 0 && (!virtual_op || bd.is_MAX))
  		continue;	    // nothing to replace
  
  	    // n == number of extra chars required
  	    // If we split a TAB, it may be replaced by several characters.
  	    // Thus the number of characters may increase!
  	    // If the range starts in virtual space, count the initial
  	    // coladd offset as part of "startspaces"
  	    if (virtual_op && bd.is_short && *bd.textstart == NUL)
  	    {
  		pos_T vpos;
  
  		vpos.lnum = curwin->w_cursor.lnum;
  		getvpos(&vpos, oap->start_vcol);
  		bd.startspaces += vpos.coladd;
  		n = bd.startspaces;
  	    }
  	    else
  		// allow for pre spaces
  		n = (bd.startspaces ? bd.start_char_vcols - 1 : 0);
  
  	    // allow for post spp
  	    n += (bd.endspaces
  		    && !bd.is_oneChar
  		    && bd.end_char_vcols > 0) ? bd.end_char_vcols - 1 : 0;
  	    // Figure out how many characters to replace.
  	    numc = oap->end_vcol - oap->start_vcol + 1;
  	    if (bd.is_short && (!virtual_op || bd.is_MAX))
  		numc -= (oap->end_vcol - bd.end_vcol) + 1;
  
  	    // A double-wide character can be replaced only up to half the
  	    // times.
  	    if ((*mb_char2cells)(c) > 1)
  	    {
  		if ((numc & 1) && !bd.is_short)
  		{
  		    ++bd.endspaces;
  		    ++n;
  		}
  		numc = numc / 2;
  	    }
  
  	    // Compute bytes needed, move character count to num_chars.
  	    num_chars = numc;
  	    numc *= (*mb_char2len)(c);
  	    // oldlen includes textlen, so don't double count
  	    n += numc - bd.textlen;
  
  	    oldp = ml_get_curline();
  	    oldlen = STRLEN(oldp);
  	    newp = alloc(oldlen + 1 + n);
  	    if (newp == NULL)
  		continue;
  	    vim_memset(newp, NUL, (size_t)(oldlen + 1 + n));
  	    // copy up to deleted part
  	    mch_memmove(newp, oldp, (size_t)bd.textcol);
  	    oldp += bd.textcol + bd.textlen;
  	    // insert pre-spaces
  	    vim_memset(newp + bd.textcol, ' ', (size_t)bd.startspaces);
  	    // insert replacement chars CHECK FOR ALLOCATED SPACE
  	    // REPLACE_CR_NCHAR/REPLACE_NL_NCHAR is used for entering CR
  	    // literally.
  	    if (had_ctrl_v_cr || (c != '\r' && c != '\n'))
  	    {
  		if (has_mbyte)
  		{
  		    n = (int)STRLEN(newp);
  		    while (--num_chars >= 0)
  			n += (*mb_char2bytes)(c, newp + n);
  		}
  		else
  		    vim_memset(newp + STRLEN(newp), c, (size_t)numc);
  		if (!bd.is_short)
  		{
  		    // insert post-spaces
  		    vim_memset(newp + STRLEN(newp), ' ', (size_t)bd.endspaces);
  		    // copy the part after the changed part
  		    STRMOVE(newp + STRLEN(newp), oldp);
  		}
  	    }
  	    else
  	    {
  		// Replacing with \r or \n means splitting the line.
  		after_p = alloc(oldlen + 1 + n - STRLEN(newp));
  		if (after_p != NULL)
  		    STRMOVE(after_p, oldp);
  	    }
  	    // replace the line
  	    ml_replace(curwin->w_cursor.lnum, newp, FALSE);
  	    if (after_p != NULL)
  	    {
  		ml_append(curwin->w_cursor.lnum++, after_p, 0, FALSE);
  		appended_lines_mark(curwin->w_cursor.lnum, 1L);
  		oap->end.lnum++;
  		vim_free(after_p);
  	    }
  	}
      }
      else
      {
  	/*
  	 * MCHAR and MLINE motion replace.
  	 */
  	if (oap->motion_type == MLINE)
  	{
  	    oap->start.col = 0;
  	    curwin->w_cursor.col = 0;
  	    oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
  	    if (oap->end.col)
  		--oap->end.col;
  	}
  	else if (!oap->inclusive)
  	    dec(&(oap->end));
  
  	while (LTOREQ_POS(curwin->w_cursor, oap->end))
  	{
  	    n = gchar_cursor();
  	    if (n != NUL)
  	    {
  		int new_byte_len = (*mb_char2len)(c);
  		int old_byte_len = mb_ptr2len(ml_get_cursor());
  
  		if (new_byte_len > 1 || old_byte_len > 1)
  		{
  		    // This is slow, but it handles replacing a single-byte
  		    // with a multi-byte and the other way around.
  		    if (curwin->w_cursor.lnum == oap->end.lnum)
  			oap->end.col += new_byte_len - old_byte_len;
  		    replace_character(c);
  		}
  		else
  		{
  		    if (n == TAB)
  		    {
  			int end_vcol = 0;
  
  			if (curwin->w_cursor.lnum == oap->end.lnum)
  			{
  			    // oap->end has to be recalculated when
  			    // the tab breaks
  			    end_vcol = getviscol2(oap->end.col,
  							     oap->end.coladd);
  			}
  			coladvance_force(getviscol());
  			if (curwin->w_cursor.lnum == oap->end.lnum)
  			    getvpos(&oap->end, end_vcol);
  		    }
  		    PBYTE(curwin->w_cursor, c);
  		}
  	    }
  	    else if (virtual_op && curwin->w_cursor.lnum == oap->end.lnum)
  	    {
  		int virtcols = oap->end.coladd;
  
  		if (curwin->w_cursor.lnum == oap->start.lnum
  			&& oap->start.col == oap->end.col && oap->start.coladd)
  		    virtcols -= oap->start.coladd;
  
  		// oap->end has been trimmed so it's effectively inclusive;
  		// as a result an extra +1 must be counted so we don't
  		// trample the NUL byte.
  		coladvance_force(getviscol2(oap->end.col, oap->end.coladd) + 1);
  		curwin->w_cursor.col -= (virtcols + 1);
  		for (; virtcols >= 0; virtcols--)
  		{
                     if ((*mb_char2len)(c) > 1)
  		       replace_character(c);
                     else
  			PBYTE(curwin->w_cursor, c);
  		   if (inc(&curwin->w_cursor) == -1)
  		       break;
  		}
  	    }
  
  	    // Advance to next character, stop at the end of the file.
  	    if (inc_cursor() == -1)
  		break;
  	}
      }
  
      curwin->w_cursor = oap->start;
      check_cursor();
      changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1, 0L);
  
      if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
      {
  	// Set "'[" and "']" marks.
  	curbuf->b_op_start = oap->start;
  	curbuf->b_op_end = oap->end;
      }
  
      return OK;
  }
  
  static int swapchars(int op_type, pos_T *pos, int length);
  
  /*
   * Handle the (non-standard vi) tilde operator.  Also for "gu", "gU" and "g?".
   */
      static void
  op_tilde(oparg_T *oap)
  {
      pos_T		pos;
      struct block_def	bd;
      int			did_change = FALSE;
  
      if (u_save((linenr_T)(oap->start.lnum - 1),
  				       (linenr_T)(oap->end.lnum + 1)) == FAIL)
  	return;
  
      pos = oap->start;
      if (oap->block_mode)		    // Visual block mode
      {
  	for (; pos.lnum <= oap->end.lnum; ++pos.lnum)
  	{
  	    int one_change;
  
  	    block_prep(oap, &bd, pos.lnum, FALSE);
  	    pos.col = bd.textcol;
  	    one_change = swapchars(oap->op_type, &pos, bd.textlen);
  	    did_change |= one_change;
  
  #ifdef FEAT_NETBEANS_INTG
  	    if (netbeans_active() && one_change)
  	    {
  		char_u *ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
  
  		netbeans_removed(curbuf, pos.lnum, bd.textcol,
  							    (long)bd.textlen);
  		netbeans_inserted(curbuf, pos.lnum, bd.textcol,
  						&ptr[bd.textcol], bd.textlen);
  	    }
  #endif
  	}
  	if (did_change)
  	    changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L);
      }
      else				    // not block mode
      {
  	if (oap->motion_type == MLINE)
  	{
  	    oap->start.col = 0;
  	    pos.col = 0;
  	    oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
  	    if (oap->end.col)
  		--oap->end.col;
  	}
  	else if (!oap->inclusive)
  	    dec(&(oap->end));
  
  	if (pos.lnum == oap->end.lnum)
  	    did_change = swapchars(oap->op_type, &pos,
  						  oap->end.col - pos.col + 1);
  	else
  	    for (;;)
  	    {
  		did_change |= swapchars(oap->op_type, &pos,
  				pos.lnum == oap->end.lnum ? oap->end.col + 1:
  					   (int)STRLEN(ml_get_pos(&pos)));
  		if (LTOREQ_POS(oap->end, pos) || inc(&pos) == -1)
  		    break;
  	    }
  	if (did_change)
  	{
  	    changed_lines(oap->start.lnum, oap->start.col, oap->end.lnum + 1,
  									  0L);
  #ifdef FEAT_NETBEANS_INTG
  	    if (netbeans_active() && did_change)
  	    {
  		char_u *ptr;
  		int count;
  
  		pos = oap->start;
  		while (pos.lnum < oap->end.lnum)
  		{
  		    ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
  		    count = (int)STRLEN(ptr) - pos.col;
  		    netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
  		    netbeans_inserted(curbuf, pos.lnum, pos.col,
  							&ptr[pos.col], count);
  		    pos.col = 0;
  		    pos.lnum++;
  		}
  		ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
  		count = oap->end.col - pos.col + 1;
  		netbeans_removed(curbuf, pos.lnum, pos.col, (long)count);
  		netbeans_inserted(curbuf, pos.lnum, pos.col,
  							&ptr[pos.col], count);
  	    }
  #endif
  	}
      }
  
      if (!did_change && oap->is_VIsual)
  	// No change: need to remove the Visual selection
  	redraw_curbuf_later(INVERTED);
  
      if ((cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
      {
  	// Set '[ and '] marks.
  	curbuf->b_op_start = oap->start;
  	curbuf->b_op_end = oap->end;
      }
  
      if (oap->line_count > p_report)
  	smsg(NGETTEXT("%ld line changed", "%ld lines changed",
  					    oap->line_count), oap->line_count);
  }
  
  /*
   * Invoke swapchar() on "length" bytes at position "pos".
   * "pos" is advanced to just after the changed characters.
   * "length" is rounded up to include the whole last multi-byte character.
   * Also works correctly when the number of bytes changes.
   * Returns TRUE if some character was changed.
   */
      static int
  swapchars(int op_type, pos_T *pos, int length)
  {
      int todo;
      int	did_change = 0;
  
      for (todo = length; todo > 0; --todo)
      {
  	if (has_mbyte)
  	{
  	    int len = (*mb_ptr2len)(ml_get_pos(pos));
  
  	    // we're counting bytes, not characters
  	    if (len > 0)
  		todo -= len - 1;
  	}
  	did_change |= swapchar(op_type, pos);
  	if (inc(pos) == -1)    // at end of file
  	    break;
      }
      return did_change;
  }
  
  /*
   * If op_type == OP_UPPER: make uppercase,
   * if op_type == OP_LOWER: make lowercase,
   * if op_type == OP_ROT13: do rot13 encoding,
   * else swap case of character at 'pos'
   * returns TRUE when something actually changed.
   */
      int
  swapchar(int op_type, pos_T *pos)
  {
      int	    c;
      int	    nc;
  
      c = gchar_pos(pos);
  
      // Only do rot13 encoding for ASCII characters.
      if (c >= 0x80 && op_type == OP_ROT13)
  	return FALSE;
  
      if (op_type == OP_UPPER && c == 0xdf
  		      && (enc_latin1like || STRCMP(p_enc, "iso-8859-2") == 0))
      {
  	pos_T   sp = curwin->w_cursor;
  
  	// Special handling of German sharp s: change to "SS".
  	curwin->w_cursor = *pos;
  	del_char(FALSE);
  	ins_char('S');
  	ins_char('S');
  	curwin->w_cursor = sp;
  	inc(pos);
      }
  
      if (enc_dbcs != 0 && c >= 0x100)	// No lower/uppercase letter
  	return FALSE;
      nc = c;
      if (MB_ISLOWER(c))
      {
  	if (op_type == OP_ROT13)
  	    nc = ROT13(c, 'a');
  	else if (op_type != OP_LOWER)
  	    nc = MB_TOUPPER(c);
      }
      else if (MB_ISUPPER(c))
      {
  	if (op_type == OP_ROT13)
  	    nc = ROT13(c, 'A');
  	else if (op_type != OP_UPPER)
  	    nc = MB_TOLOWER(c);
      }
      if (nc != c)
      {
  	if (enc_utf8 && (c >= 0x80 || nc >= 0x80))
  	{
  	    pos_T   sp = curwin->w_cursor;
  
  	    curwin->w_cursor = *pos;
  	    // don't use del_char(), it also removes composing chars
  	    del_bytes(utf_ptr2len(ml_get_cursor()), FALSE, FALSE);
  	    ins_char(nc);
  	    curwin->w_cursor = sp;
  	}
  	else
  	    PBYTE(*pos, nc);
  	return TRUE;
      }
      return FALSE;
  }
  
  /*
   * op_insert - Insert and append operators for Visual mode.
   */
      void
  op_insert(oparg_T *oap, long count1)
  {
      long		ins_len, pre_textlen = 0;
      char_u		*firstline, *ins_text;
      colnr_T		ind_pre_col = 0, ind_post_col;
      int			ind_pre_vcol = 0, ind_post_vcol = 0;
      struct block_def	bd;
      int			i;
      pos_T		t1;
      pos_T		start_insert;
  			// offset when cursor was moved in insert mode
      int			offset = 0;
  
      // edit() changes this - record it for OP_APPEND
      bd.is_MAX = (curwin->w_curswant == MAXCOL);
  
      // vis block is still marked. Get rid of it now.
      curwin->w_cursor.lnum = oap->start.lnum;
      update_screen(INVERTED);
  
      if (oap->block_mode)
      {
  	// When 'virtualedit' is used, need to insert the extra spaces before
  	// doing block_prep().  When only "block" is used, virtual edit is
  	// already disabled, but still need it when calling
  	// coladvance_force().
  	// coladvance_force() uses get_ve_flags() to get the 'virtualedit'
  	// state for the current window.  To override that state, we need to
  	// set the window-local value of ve_flags rather than the global value.
  	if (curwin->w_cursor.coladd > 0)
  	{
  	    int		old_ve_flags = curwin->w_ve_flags;
  
  	    if (u_save_cursor() == FAIL)
  		return;
  
  	    curwin->w_ve_flags = VE_ALL;
  	    coladvance_force(oap->op_type == OP_APPEND
  					   ? oap->end_vcol + 1 : getviscol());
  	    if (oap->op_type == OP_APPEND)
  		--curwin->w_cursor.col;
  	    curwin->w_ve_flags = old_ve_flags;
  	}
  	// Get the info about the block before entering the text
  	block_prep(oap, &bd, oap->start.lnum, TRUE);
  	// Get indent information
  	ind_pre_col = (colnr_T)getwhitecols_curline();
  	ind_pre_vcol = get_indent();
  	firstline = ml_get(oap->start.lnum) + bd.textcol;
  
  	if (oap->op_type == OP_APPEND)
  	    firstline += bd.textlen;
  	pre_textlen = (long)STRLEN(firstline);
      }
  
      if (oap->op_type == OP_APPEND)
      {
  	if (oap->block_mode && curwin->w_cursor.coladd == 0)
  	{
  	    // Move the cursor to the character right of the block.
  	    curwin->w_set_curswant = TRUE;
  	    while (*ml_get_cursor() != NUL
  		    && (curwin->w_cursor.col < bd.textcol + bd.textlen))
  		++curwin->w_cursor.col;
  	    if (bd.is_short && !bd.is_MAX)
  	    {
  		// First line was too short, make it longer and adjust the
  		// values in "bd".
  		if (u_save_cursor() == FAIL)
  		    return;
  		for (i = 0; i < bd.endspaces; ++i)
  		    ins_char(' ');
  		bd.textlen += bd.endspaces;
  	    }
  	}
  	else
  	{
  	    curwin->w_cursor = oap->end;
  	    check_cursor_col();
  
  	    // Works just like an 'i'nsert on the next character.
  	    if (!LINEEMPTY(curwin->w_cursor.lnum)
  		    && oap->start_vcol != oap->end_vcol)
  		inc_cursor();
  	}
      }
  
      t1 = oap->start;
      start_insert = curwin->w_cursor;
      (void)edit(NUL, FALSE, (linenr_T)count1);
  
      // When a tab was inserted, and the characters in front of the tab
      // have been converted to a tab as well, the column of the cursor
      // might have actually been reduced, so need to adjust here.
      if (t1.lnum == curbuf->b_op_start_orig.lnum
  	    && LT_POS(curbuf->b_op_start_orig, t1))
  	oap->start = curbuf->b_op_start_orig;
  
      // If user has moved off this line, we don't know what to do, so do
      // nothing.
      // Also don't repeat the insert when Insert mode ended with CTRL-C.
      if (curwin->w_cursor.lnum != oap->start.lnum || got_int)
  	return;
  
      if (oap->block_mode)
      {
  	struct block_def	bd2;
  	int			did_indent = FALSE;
  	size_t			len;
  	int			add;
  
  	// If indent kicked in, the firstline might have changed
  	// but only do that, if the indent actually increased.
  	ind_post_col = (colnr_T)getwhitecols_curline();
  	if (curbuf->b_op_start.col > ind_pre_col && ind_post_col > ind_pre_col)
  	{
  	    bd.textcol += ind_post_col - ind_pre_col;
  	    ind_post_vcol = get_indent();
  	    bd.start_vcol += ind_post_vcol - ind_pre_vcol;
  	    did_indent = TRUE;
  	}
  
  	// The user may have moved the cursor before inserting something, try
  	// to adjust the block for that.  But only do it, if the difference
  	// does not come from indent kicking in.
  	if (oap->start.lnum == curbuf->b_op_start_orig.lnum
  						  && !bd.is_MAX && !did_indent)
  	{
  	    int t = getviscol2(curbuf->b_op_start_orig.col,
  					       curbuf->b_op_start_orig.coladd);
  
  	    if (!bd.is_MAX)
  	    {
  		if (oap->op_type == OP_INSERT
  			&& oap->start.col + oap->start.coladd
  				!= curbuf->b_op_start_orig.col
  					      + curbuf->b_op_start_orig.coladd)
  		{
  		    oap->start.col = curbuf->b_op_start_orig.col;
  		    pre_textlen -= t - oap->start_vcol;
  		    oap->start_vcol = t;
  		}
  		else if (oap->op_type == OP_APPEND
  			&& oap->end.col + oap->end.coladd
  				>= curbuf->b_op_start_orig.col
  					      + curbuf->b_op_start_orig.coladd)
  		{
  		    oap->start.col = curbuf->b_op_start_orig.col;
  		    // reset pre_textlen to the value of OP_INSERT
  		    pre_textlen += bd.textlen;
  		    pre_textlen -= t - oap->start_vcol;
  		    oap->start_vcol = t;
  		    oap->op_type = OP_INSERT;
  		}
  	    }
  	    else if (bd.is_MAX && oap->op_type == OP_APPEND)
  	    {
  		// reset pre_textlen to the value of OP_INSERT
  		pre_textlen += bd.textlen;
  		pre_textlen -= t - oap->start_vcol;
  	    }
  	}
  
  	// Spaces and tabs in the indent may have changed to other spaces and
  	// tabs.  Get the starting column again and correct the length.
  	// Don't do this when "$" used, end-of-line will have changed.
  	//
  	// if indent was added and the inserted text was after the indent,
  	// correct the selection for the new indent.
  	if (did_indent && bd.textcol - ind_post_col > 0)
  	{
  	    oap->start.col += ind_post_col - ind_pre_col;
  	    oap->start_vcol += ind_post_vcol - ind_pre_vcol;
  	    oap->end.col += ind_post_col - ind_pre_col;
  	    oap->end_vcol += ind_post_vcol - ind_pre_vcol;
  	}
  	block_prep(oap, &bd2, oap->start.lnum, TRUE);
  	if (did_indent && bd.textcol - ind_post_col > 0)
  	{
  	    // undo for where "oap" is used below
  	    oap->start.col -= ind_post_col - ind_pre_col;
  	    oap->start_vcol -= ind_post_vcol - ind_pre_vcol;
  	    oap->end.col -= ind_post_col - ind_pre_col;
  	    oap->end_vcol -= ind_post_vcol - ind_pre_vcol;
  	}
  	if (!bd.is_MAX || bd2.textlen < bd.textlen)
  	{
  	    if (oap->op_type == OP_APPEND)
  	    {
  		pre_textlen += bd2.textlen - bd.textlen;
  		if (bd2.endspaces)
  		    --bd2.textlen;
  	    }
  	    bd.textcol = bd2.textcol;
  	    bd.textlen = bd2.textlen;
  	}
  
  	/*
  	 * Subsequent calls to ml_get() flush the firstline data - take a
  	 * copy of the required string.
  	 */
  	firstline = ml_get(oap->start.lnum);
  	len = STRLEN(firstline);
  	add = bd.textcol;
  	if (oap->op_type == OP_APPEND)
  	{
  	    add += bd.textlen;
  	    // account for pressing cursor in insert mode when '$' was used
  	    if (bd.is_MAX
  		&& (start_insert.lnum == Insstart.lnum
  					   && start_insert.col > Insstart.col))
  	    {
  		offset = (start_insert.col - Insstart.col);
  		add -= offset;
  		if (oap->end_vcol > offset)
  		    oap->end_vcol -= (offset + 1);
  		else
  		    // moved outside of the visual block, what to do?
  		    return;
  	    }
  	}
  	if ((size_t)add > len)
  	    firstline += len;  // short line, point to the NUL
  	else
  	    firstline += add;
  	if (pre_textlen >= 0 && (ins_len =
  			   (long)STRLEN(firstline) - pre_textlen - offset) > 0)
  	{
  	    ins_text = vim_strnsave(firstline, ins_len);
  	    if (ins_text != NULL)
  	    {
  		// block handled here
  		if (u_save(oap->start.lnum,
  					 (linenr_T)(oap->end.lnum + 1)) == OK)
  		    block_insert(oap, ins_text, (oap->op_type == OP_INSERT),
  									 &bd);
  
  		curwin->w_cursor.col = oap->start.col;
  		check_cursor();
  		vim_free(ins_text);
  	    }
  	}
      }
  }
  
  /*
   * op_change - handle a change operation
   *
   * return TRUE if edit() returns because of a CTRL-O command
   */
      int
  op_change(oparg_T *oap)
  {
      colnr_T		l;
      int			retval;
      long		offset;
      linenr_T		linenr;
      long		ins_len;
      long		pre_textlen = 0;
      long		pre_indent = 0;
      char_u		*firstline;
      char_u		*ins_text, *newp, *oldp;
      struct block_def	bd;
  
      l = oap->start.col;
      if (oap->motion_type == MLINE)
      {
  	l = 0;
  #ifdef FEAT_SMARTINDENT
  	if (!p_paste && curbuf->b_p_si
  # ifdef FEAT_CINDENT
  		&& !curbuf->b_p_cin
  # endif
  		)
  	    can_si = TRUE;	// It's like opening a new line, do si
  #endif
      }
  
      // First delete the text in the region.  In an empty buffer only need to
      // save for undo
      if (curbuf->b_ml.ml_flags & ML_EMPTY)
      {
  	if (u_save_cursor() == FAIL)
  	    return FALSE;
      }
      else if (op_delete(oap) == FAIL)
  	return FALSE;
  
      if ((l > curwin->w_cursor.col) && !LINEEMPTY(curwin->w_cursor.lnum)
  							 && !virtual_op)
  	inc_cursor();
  
      // check for still on same line (<CR> in inserted text meaningless)
      // skip blank lines too
      if (oap->block_mode)
      {
  	// Add spaces before getting the current line length.
  	if (virtual_op && (curwin->w_cursor.coladd > 0
  						    || gchar_cursor() == NUL))
  	    coladvance_force(getviscol());
  	firstline = ml_get(oap->start.lnum);
  	pre_textlen = (long)STRLEN(firstline);
  	pre_indent = (long)getwhitecols(firstline);
  	bd.textcol = curwin->w_cursor.col;
      }
  
  #if defined(FEAT_LISP) || defined(FEAT_CINDENT)
      if (oap->motion_type == MLINE)
  	fix_indent();
  #endif
  
      retval = edit(NUL, FALSE, (linenr_T)1);
  
      /*
       * In Visual block mode, handle copying the new text to all lines of the
       * block.
       * Don't repeat the insert when Insert mode ended with CTRL-C.
       */
      if (oap->block_mode && oap->start.lnum != oap->end.lnum && !got_int)
      {
  	// Auto-indenting may have changed the indent.  If the cursor was past
  	// the indent, exclude that indent change from the inserted text.
  	firstline = ml_get(oap->start.lnum);
  	if (bd.textcol > (colnr_T)pre_indent)
  	{
  	    long new_indent = (long)getwhitecols(firstline);
  
  	    pre_textlen += new_indent - pre_indent;
  	    bd.textcol += new_indent - pre_indent;
  	}
  
  	ins_len = (long)STRLEN(firstline) - pre_textlen;
  	if (ins_len > 0)
  	{
  	    // Subsequent calls to ml_get() flush the firstline data - take a
  	    // copy of the inserted text.
  	    if ((ins_text = alloc(ins_len + 1)) != NULL)
  	    {
  		vim_strncpy(ins_text, firstline + bd.textcol, (size_t)ins_len);
  		for (linenr = oap->start.lnum + 1; linenr <= oap->end.lnum;
  								     linenr++)
  		{
  		    block_prep(oap, &bd, linenr, TRUE);
  		    if (!bd.is_short || virtual_op)
  		    {
  			pos_T vpos;
  
  			// If the block starts in virtual space, count the
  			// initial coladd offset as part of "startspaces"
  			if (bd.is_short)
  			{
  			    vpos.lnum = linenr;
  			    (void)getvpos(&vpos, oap->start_vcol);
  			}
  			else
  			    vpos.coladd = 0;
  			oldp = ml_get(linenr);
  			newp = alloc(STRLEN(oldp) + vpos.coladd + ins_len + 1);
  			if (newp == NULL)
  			    continue;
  			// copy up to block start
  			mch_memmove(newp, oldp, (size_t)bd.textcol);
  			offset = bd.textcol;
  			vim_memset(newp + offset, ' ', (size_t)vpos.coladd);
  			offset += vpos.coladd;
  			mch_memmove(newp + offset, ins_text, (size_t)ins_len);
  			offset += ins_len;
  			oldp += bd.textcol;
  			STRMOVE(newp + offset, oldp);
  			ml_replace(linenr, newp, FALSE);
  		    }
  		}
  		check_cursor();
  
  		changed_lines(oap->start.lnum + 1, 0, oap->end.lnum + 1, 0L);
  	    }
  	    vim_free(ins_text);
  	}
      }
      auto_format(FALSE, TRUE);
  
      return retval;
  }
  
  /*
   * When the cursor is on the NUL past the end of the line and it should not be
   * there move it left.
   */
      void
  adjust_cursor_eol(void)
  {
      unsigned int cur_ve_flags = get_ve_flags();
  
      if (curwin->w_cursor.col > 0
  	    && gchar_cursor() == NUL
  	    && (cur_ve_flags & VE_ONEMORE) == 0
  	    && !(restart_edit || (State & INSERT)))
      {
  	// Put the cursor on the last character in the line.
  	dec_cursor();
  
  	if (cur_ve_flags == VE_ALL)
  	{
  	    colnr_T	    scol, ecol;
  
  	    // Coladd is set to the width of the last character.
  	    getvcol(curwin, &curwin->w_cursor, &scol, NULL, &ecol);
  	    curwin->w_cursor.coladd = ecol - scol + 1;
  	}
      }
  }
  
  /*
   * If "process" is TRUE and the line begins with a comment leader (possibly
   * after some white space), return a pointer to the text after it. Put a boolean
   * value indicating whether the line ends with an unclosed comment in
   * "is_comment".
   * line - line to be processed,
   * process - if FALSE, will only check whether the line ends with an unclosed
   *	     comment,
   * include_space - whether to also skip space following the comment leader,
   * is_comment - will indicate whether the current line ends with an unclosed
   *		comment.
   */
      char_u *
  skip_comment(
      char_u   *line,
      int      process,
      int	     include_space,
      int      *is_comment)
  {
      char_u *comment_flags = NULL;
      int    lead_len;
      int    leader_offset = get_last_leader_offset(line, &comment_flags);
  
      *is_comment = FALSE;
      if (leader_offset != -1)
      {
  	// Let's check whether the line ends with an unclosed comment.
  	// If the last comment leader has COM_END in flags, there's no comment.
  	while (*comment_flags)
  	{
  	    if (*comment_flags == COM_END
  		    || *comment_flags == ':')
  		break;
  	    ++comment_flags;
  	}
  	if (*comment_flags != COM_END)
  	    *is_comment = TRUE;
      }
  
      if (process == FALSE)
  	return line;
  
      lead_len = get_leader_len(line, &comment_flags, FALSE, include_space);
  
      if (lead_len == 0)
  	return line;
  
      // Find:
      // - COM_END,
      // - colon,
      // whichever comes first.
      while (*comment_flags)
      {
  	if (*comment_flags == COM_END
  		|| *comment_flags == ':')
  	    break;
  	++comment_flags;
      }
  
      // If we found a colon, it means that we are not processing a line
      // starting with a closing part of a three-part comment. That's good,
      // because we don't want to remove those as this would be annoying.
      if (*comment_flags == ':' || *comment_flags == NUL)
  	line += lead_len;
  
      return line;
  }
  
  /*
   * Join 'count' lines (minimal 2) at cursor position.
   * When "save_undo" is TRUE save lines for undo first.
   * Set "use_formatoptions" to FALSE when e.g. processing backspace and comment
   * leaders should not be removed.
   * When setmark is TRUE, sets the '[ and '] mark, else, the caller is expected
   * to set those marks.
   *
   * return FAIL for failure, OK otherwise
   */
      int
  do_join(
      long    count,
      int	    insert_space,
      int	    save_undo,
      int	    use_formatoptions UNUSED,
      int	    setmark)
  {
      char_u	*curr = NULL;
      char_u      *curr_start = NULL;
      char_u	*cend;
      char_u	*newp;
      size_t	newp_len;
      char_u	*spaces;	// number of spaces inserted before a line
      int		endcurr1 = NUL;
      int		endcurr2 = NUL;
      int		currsize = 0;	// size of the current line
      int		sumsize = 0;	// size of the long new line
      linenr_T	t;
      colnr_T	col = 0;
      int		ret = OK;
      int		*comments = NULL;
      int		remove_comments = (use_formatoptions == TRUE)
  				  && has_format_option(FO_REMOVE_COMS);
      int		prev_was_comment;
  #ifdef FEAT_PROP_POPUP
      int		propcount = 0;	// number of props over all joined lines
      int		props_remaining;
  #endif
  
      if (save_undo && u_save((linenr_T)(curwin->w_cursor.lnum - 1),
  			    (linenr_T)(curwin->w_cursor.lnum + count)) == FAIL)
  	return FAIL;
  
      // Allocate an array to store the number of spaces inserted before each
      // line.  We will use it to pre-compute the length of the new line and the
      // proper placement of each original line in the new one.
      spaces = lalloc_clear(count, TRUE);
      if (spaces == NULL)
  	return FAIL;
      if (remove_comments)
      {
  	comments = lalloc_clear(count * sizeof(int), TRUE);
  	if (comments == NULL)
  	{
  	    vim_free(spaces);
  	    return FAIL;
  	}
      }
  
      /*
       * Don't move anything yet, just compute the final line length
       * and setup the array of space strings lengths
       * This loops forward over the joined lines.
       */
      for (t = 0; t < count; ++t)
      {
  	curr = curr_start = ml_get((linenr_T)(curwin->w_cursor.lnum + t));
  #ifdef FEAT_PROP_POPUP
  	propcount += count_props((linenr_T) (curwin->w_cursor.lnum + t), t > 0);
  #endif
  	if (t == 0 && setmark && (cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
  	{
  	    // Set the '[ mark.
  	    curwin->w_buffer->b_op_start.lnum = curwin->w_cursor.lnum;
  	    curwin->w_buffer->b_op_start.col  = (colnr_T)STRLEN(curr);
  	}
  	if (remove_comments)
  	{
  	    // We don't want to remove the comment leader if the
  	    // previous line is not a comment.
  	    if (t > 0 && prev_was_comment)
  	    {
  
  		char_u *new_curr = skip_comment(curr, TRUE, insert_space,
  							   &prev_was_comment);
  		comments[t] = (int)(new_curr - curr);
  		curr = new_curr;
  	    }
  	    else
  		curr = skip_comment(curr, FALSE, insert_space,
  							   &prev_was_comment);
  	}
  
  	if (insert_space && t > 0)
  	{
  	    curr = skipwhite(curr);
  	    if (*curr != NUL && *curr != ')'
  		    && sumsize != 0 && endcurr1 != TAB
  		    && (!has_format_option(FO_MBYTE_JOIN)
  			|| (mb_ptr2char(curr) < 0x100 && endcurr1 < 0x100))
  		    && (!has_format_option(FO_MBYTE_JOIN2)
  			|| (mb_ptr2char(curr) < 0x100
  			    && !(enc_utf8 && utf_eat_space(endcurr1)))
  			|| (endcurr1 < 0x100
  			    && !(enc_utf8 && utf_eat_space(mb_ptr2char(curr)))))
  	       )
  	    {
  		// don't add a space if the line is ending in a space
  		if (endcurr1 == ' ')
  		    endcurr1 = endcurr2;
  		else
  		    ++spaces[t];
  		// extra space when 'joinspaces' set and line ends in '.'
  		if (       p_js
  			&& (endcurr1 == '.'
  			    || (vim_strchr(p_cpo, CPO_JOINSP) == NULL
  				&& (endcurr1 == '?' || endcurr1 == '!'))))
  		    ++spaces[t];
  	    }
  	}
  	currsize = (int)STRLEN(curr);
  	sumsize += currsize + spaces[t];
  	endcurr1 = endcurr2 = NUL;
  	if (insert_space && currsize > 0)
  	{
  	    if (has_mbyte)
  	    {
  		cend = curr + currsize;
  		MB_PTR_BACK(curr, cend);
  		endcurr1 = (*mb_ptr2char)(cend);
  		if (cend > curr)
  		{
  		    MB_PTR_BACK(curr, cend);
  		    endcurr2 = (*mb_ptr2char)(cend);
  		}
  	    }
  	    else
  	    {
  		endcurr1 = *(curr + currsize - 1);
  		if (currsize > 1)
  		    endcurr2 = *(curr + currsize - 2);
  	    }
  	}
  	line_breakcheck();
  	if (got_int)
  	{
  	    ret = FAIL;
  	    goto theend;
  	}
      }
  
      // store the column position before last line
      col = sumsize - currsize - spaces[count - 1];
  
      // allocate the space for the new line
      newp_len = sumsize + 1;
  #ifdef FEAT_PROP_POPUP
      newp_len += propcount * sizeof(textprop_T);
  #endif
      newp = alloc(newp_len);
      if (newp == NULL)
      {
  	ret = FAIL;
  	goto theend;
      }
      cend = newp + sumsize;
      *cend = 0;
  
      /*
       * Move affected lines to the new long one.
       * This loops backwards over the joined lines, including the original line.
       *
       * Move marks from each deleted line to the joined line, adjusting the
       * column.  This is not Vi compatible, but Vi deletes the marks, thus that
       * should not really be a problem.
       */
  #ifdef FEAT_PROP_POPUP
      props_remaining = propcount;
  #endif
      for (t = count - 1; ; --t)
      {
  	int spaces_removed;
  
  	cend -= currsize;
  	mch_memmove(cend, curr, (size_t)currsize);
  
  	if (spaces[t] > 0)
  	{
  	    cend -= spaces[t];
  	    vim_memset(cend, ' ', (size_t)(spaces[t]));
  	}
  
  	// If deleting more spaces than adding, the cursor moves no more than
  	// what is added if it is inside these spaces.
  	spaces_removed = (curr - curr_start) - spaces[t];
  
  	mark_col_adjust(curwin->w_cursor.lnum + t, (colnr_T)0, (linenr_T)-t,
  			 (long)(cend - newp - spaces_removed), spaces_removed);
  #ifdef FEAT_PROP_POPUP
  	prepend_joined_props(newp + sumsize + 1, propcount, &props_remaining,
  		curwin->w_cursor.lnum + t, t == count - 1,
  		(long)(cend - newp), spaces_removed);
  #endif
  
  	if (t == 0)
  	    break;
  	curr = curr_start = ml_get((linenr_T)(curwin->w_cursor.lnum + t - 1));
  	if (remove_comments)
  	    curr += comments[t - 1];
  	if (insert_space && t > 1)
  	    curr = skipwhite(curr);
  	currsize = (int)STRLEN(curr);
      }
  
      ml_replace_len(curwin->w_cursor.lnum, newp, (colnr_T)newp_len, TRUE, FALSE);
  
      if (setmark && (cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
      {
  	// Set the '] mark.
  	curwin->w_buffer->b_op_end.lnum = curwin->w_cursor.lnum;
  	curwin->w_buffer->b_op_end.col  = (colnr_T)sumsize;
      }
  
      // Only report the change in the first line here, del_lines() will report
      // the deleted line.
      changed_lines(curwin->w_cursor.lnum, currsize,
  					       curwin->w_cursor.lnum + 1, 0L);
      /*
       * Delete following lines. To do this we move the cursor there
       * briefly, and then move it back. After del_lines() the cursor may
       * have moved up (last line deleted), so the current lnum is kept in t.
       */
      t = curwin->w_cursor.lnum;
      ++curwin->w_cursor.lnum;
      del_lines(count - 1, FALSE);
      curwin->w_cursor.lnum = t;
  
      /*
       * Set the cursor column:
       * Vi compatible: use the column of the first join
       * vim:	      use the column of the last join
       */
      curwin->w_cursor.col =
  		    (vim_strchr(p_cpo, CPO_JOINCOL) != NULL ? currsize : col);
      check_cursor_col();
  
      curwin->w_cursor.coladd = 0;
      curwin->w_set_curswant = TRUE;
  
  theend:
      vim_free(spaces);
      if (remove_comments)
  	vim_free(comments);
      return ret;
  }
  
  /*
   * prepare a few things for block mode yank/delete/tilde
   *
   * for delete:
   * - textlen includes the first/last char to be (partly) deleted
   * - start/endspaces is the number of columns that are taken by the
   *   first/last deleted char minus the number of columns that have to be
   *   deleted.
   * for yank and tilde:
   * - textlen includes the first/last char to be wholly yanked
   * - start/endspaces is the number of columns of the first/last yanked char
   *   that are to be yanked.
   */
      void
  block_prep(
      oparg_T		*oap,
      struct block_def	*bdp,
      linenr_T		lnum,
      int			is_del)
  {
      int		incr = 0;
      char_u	*pend;
      char_u	*pstart;
      char_u	*line;
      char_u	*prev_pstart;
      char_u	*prev_pend;
  #ifdef FEAT_LINEBREAK
      int		lbr_saved = curwin->w_p_lbr;
  
      // Avoid a problem with unwanted linebreaks in block mode.
      curwin->w_p_lbr = FALSE;
  #endif
      bdp->startspaces = 0;
      bdp->endspaces = 0;
      bdp->textlen = 0;
      bdp->start_vcol = 0;
      bdp->end_vcol = 0;
      bdp->is_short = FALSE;
      bdp->is_oneChar = FALSE;
      bdp->pre_whitesp = 0;
      bdp->pre_whitesp_c = 0;
      bdp->end_char_vcols = 0;
      bdp->start_char_vcols = 0;
  
      line = ml_get(lnum);
      pstart = line;
      prev_pstart = line;
      while (bdp->start_vcol < oap->start_vcol && *pstart)
      {
  	// Count a tab for what it's worth (if list mode not on)
  	incr = lbr_chartabsize(line, pstart, (colnr_T)bdp->start_vcol);
  	bdp->start_vcol += incr;
  	if (VIM_ISWHITE(*pstart))
  	{
  	    bdp->pre_whitesp += incr;
  	    bdp->pre_whitesp_c++;
  	}
  	else
  	{
  	    bdp->pre_whitesp = 0;
  	    bdp->pre_whitesp_c = 0;
  	}
  	prev_pstart = pstart;
  	MB_PTR_ADV(pstart);
      }
      bdp->start_char_vcols = incr;
      if (bdp->start_vcol < oap->start_vcol)	// line too short
      {
  	bdp->end_vcol = bdp->start_vcol;
  	bdp->is_short = TRUE;
  	if (!is_del || oap->op_type == OP_APPEND)
  	    bdp->endspaces = oap->end_vcol - oap->start_vcol + 1;
      }
      else
      {
  	// notice: this converts partly selected Multibyte characters to
  	// spaces, too.
  	bdp->startspaces = bdp->start_vcol - oap->start_vcol;
  	if (is_del && bdp->startspaces)
  	    bdp->startspaces = bdp->start_char_vcols - bdp->startspaces;
  	pend = pstart;
  	bdp->end_vcol = bdp->start_vcol;
  	if (bdp->end_vcol > oap->end_vcol)	// it's all in one character
  	{
  	    bdp->is_oneChar = TRUE;
  	    if (oap->op_type == OP_INSERT)
  		bdp->endspaces = bdp->start_char_vcols - bdp->startspaces;
  	    else if (oap->op_type == OP_APPEND)
  	    {
  		bdp->startspaces += oap->end_vcol - oap->start_vcol + 1;
  		bdp->endspaces = bdp->start_char_vcols - bdp->startspaces;
  	    }
  	    else
  	    {
  		bdp->startspaces = oap->end_vcol - oap->start_vcol + 1;
  		if (is_del && oap->op_type != OP_LSHIFT)
  		{
  		    // just putting the sum of those two into
  		    // bdp->startspaces doesn't work for Visual replace,
  		    // so we have to split the tab in two
  		    bdp->startspaces = bdp->start_char_vcols
  					- (bdp->start_vcol - oap->start_vcol);
  		    bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1;
  		}
  	    }
  	}
  	else
  	{
  	    prev_pend = pend;
  	    while (bdp->end_vcol <= oap->end_vcol && *pend != NUL)
  	    {
  		// Count a tab for what it's worth (if list mode not on)
  		prev_pend = pend;
  		incr = lbr_chartabsize_adv(line, &pend, (colnr_T)bdp->end_vcol);
  		bdp->end_vcol += incr;
  	    }
  	    if (bdp->end_vcol <= oap->end_vcol
  		    && (!is_del
  			|| oap->op_type == OP_APPEND
  			|| oap->op_type == OP_REPLACE)) // line too short
  	    {
  		bdp->is_short = TRUE;
  		// Alternative: include spaces to fill up the block.
  		// Disadvantage: can lead to trailing spaces when the line is
  		// short where the text is put
  		// if (!is_del || oap->op_type == OP_APPEND)
  		if (oap->op_type == OP_APPEND || virtual_op)
  		    bdp->endspaces = oap->end_vcol - bdp->end_vcol
  							     + oap->inclusive;
  		else
  		    bdp->endspaces = 0; // replace doesn't add characters
  	    }
  	    else if (bdp->end_vcol > oap->end_vcol)
  	    {
  		bdp->endspaces = bdp->end_vcol - oap->end_vcol - 1;
  		if (!is_del && bdp->endspaces)
  		{
  		    bdp->endspaces = incr - bdp->endspaces;
  		    if (pend != pstart)
  			pend = prev_pend;
  		}
  	    }
  	}
  	bdp->end_char_vcols = incr;
  	if (is_del && bdp->startspaces)
  	    pstart = prev_pstart;
  	bdp->textlen = (int)(pend - pstart);
      }
      bdp->textcol = (colnr_T) (pstart - line);
      bdp->textstart = pstart;
  #ifdef FEAT_LINEBREAK
      curwin->w_p_lbr = lbr_saved;
  #endif
  }
  
  /*
   * Handle the add/subtract operator.
   */
      void
  op_addsub(
      oparg_T	*oap,
      linenr_T	Prenum1,	    // Amount of add/subtract
      int		g_cmd)		    // was g<c-a>/g<c-x>
  {
      pos_T		pos;
      struct block_def	bd;
      int			change_cnt = 0;
      linenr_T		amount = Prenum1;
  
     // do_addsub() might trigger re-evaluation of 'foldexpr' halfway, when the
     // buffer is not completely updated yet. Postpone updating folds until before
     // the call to changed_lines().
  #ifdef FEAT_FOLDING
     disable_fold_update++;
  #endif
  
      if (!VIsual_active)
      {
  	pos = curwin->w_cursor;
  	if (u_save_cursor() == FAIL)
  	{
  #ifdef FEAT_FOLDING
  	    disable_fold_update--;
  #endif
  	    return;
  	}
  	change_cnt = do_addsub(oap->op_type, &pos, 0, amount);
  #ifdef FEAT_FOLDING
  	disable_fold_update--;
  #endif
  	if (change_cnt)
  	    changed_lines(pos.lnum, 0, pos.lnum + 1, 0L);
      }
      else
      {
  	int	one_change;
  	int	length;
  	pos_T	startpos;
  
  	if (u_save((linenr_T)(oap->start.lnum - 1),
  					(linenr_T)(oap->end.lnum + 1)) == FAIL)
  	{
  #ifdef FEAT_FOLDING
  	    disable_fold_update--;
  #endif
  	    return;
  	}
  
  	pos = oap->start;
  	for (; pos.lnum <= oap->end.lnum; ++pos.lnum)
  	{
  	    if (oap->block_mode)		    // Visual block mode
  	    {
  		block_prep(oap, &bd, pos.lnum, FALSE);
  		pos.col = bd.textcol;
  		length = bd.textlen;
  	    }
  	    else if (oap->motion_type == MLINE)
  	    {
  		curwin->w_cursor.col = 0;
  		pos.col = 0;
  		length = (colnr_T)STRLEN(ml_get(pos.lnum));
  	    }
  	    else // oap->motion_type == MCHAR
  	    {
  		if (pos.lnum == oap->start.lnum && !oap->inclusive)
  		    dec(&(oap->end));
  		length = (colnr_T)STRLEN(ml_get(pos.lnum));
  		pos.col = 0;
  		if (pos.lnum == oap->start.lnum)
  		{
  		    pos.col += oap->start.col;
  		    length -= oap->start.col;
  		}
  		if (pos.lnum == oap->end.lnum)
  		{
  		    length = (int)STRLEN(ml_get(oap->end.lnum));
  		    if (oap->end.col >= length)
  			oap->end.col = length - 1;
  		    length = oap->end.col - pos.col + 1;
  		}
  	    }
  	    one_change = do_addsub(oap->op_type, &pos, length, amount);
  	    if (one_change)
  	    {
  		// Remember the start position of the first change.
  		if (change_cnt == 0)
  		    startpos = curbuf->b_op_start;
  		++change_cnt;
  	    }
  
  #ifdef FEAT_NETBEANS_INTG
  	    if (netbeans_active() && one_change)
  	    {
  		char_u *ptr;
  
  		netbeans_removed(curbuf, pos.lnum, pos.col, (long)length);
  		ptr = ml_get_buf(curbuf, pos.lnum, FALSE);
  		netbeans_inserted(curbuf, pos.lnum, pos.col,
  						&ptr[pos.col], length);
  	    }
  #endif
  	    if (g_cmd && one_change)
  		amount += Prenum1;
  	}
  
  #ifdef FEAT_FOLDING
  	disable_fold_update--;
  #endif
  	if (change_cnt)
  	    changed_lines(oap->start.lnum, 0, oap->end.lnum + 1, 0L);
  
  	if (!change_cnt && oap->is_VIsual)
  	    // No change: need to remove the Visual selection
  	    redraw_curbuf_later(INVERTED);
  
  	// Set '[ mark if something changed. Keep the last end
  	// position from do_addsub().
  	if (change_cnt > 0 && (cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
  	    curbuf->b_op_start = startpos;
  
  	if (change_cnt > p_report)
  	    smsg(NGETTEXT("%d line changed", "%d lines changed",
  						      change_cnt), change_cnt);
      }
  }
  
  /*
   * Add or subtract 'Prenum1' from a number in a line
   * op_type is OP_NR_ADD or OP_NR_SUB
   *
   * Returns TRUE if some character was changed.
   */
      static int
  do_addsub(
      int		op_type,
      pos_T	*pos,
      int		length,
      linenr_T	Prenum1)
  {
      int		col;
      char_u	*buf1;
      char_u	buf2[NUMBUFLEN];
      int		pre;		// 'X'/'x': hex; '0': octal; 'B'/'b': bin
      static int	hexupper = FALSE;	// 0xABC
      uvarnumber_T	n;
      uvarnumber_T	oldn;
      char_u	*ptr;
      int		c;
      int		todel;
      int		do_hex;
      int		do_oct;
      int		do_bin;
      int		do_alpha;
      int		do_unsigned;
      int		firstdigit;
      int		subtract;
      int		negative = FALSE;
      int		was_positive = TRUE;
      int		visual = VIsual_active;
      int		did_change = FALSE;
      pos_T	save_cursor = curwin->w_cursor;
      int		maxlen = 0;
      pos_T	startpos;
      pos_T	endpos;
      colnr_T	save_coladd = 0;
  
      do_hex = (vim_strchr(curbuf->b_p_nf, 'x') != NULL);	// "heX"
      do_oct = (vim_strchr(curbuf->b_p_nf, 'o') != NULL);	// "Octal"
      do_bin = (vim_strchr(curbuf->b_p_nf, 'b') != NULL);	// "Bin"
      do_alpha = (vim_strchr(curbuf->b_p_nf, 'p') != NULL);	// "alPha"
      do_unsigned = (vim_strchr(curbuf->b_p_nf, 'u') != NULL);	// "Unsigned"
  
      if (virtual_active())
      {
  	save_coladd = pos->coladd;
  	pos->coladd = 0;
      }
  
      curwin->w_cursor = *pos;
      ptr = ml_get(pos->lnum);
      col = pos->col;
  
      if (*ptr == NUL || col + !!save_coladd >= (int)STRLEN(ptr))
  	goto theend;
  
      /*
       * First check if we are on a hexadecimal number, after the "0x".
       */
      if (!VIsual_active)
      {
  	if (do_bin)
  	    while (col > 0 && vim_isbdigit(ptr[col]))
  	    {
  		--col;
  		if (has_mbyte)
  		    col -= (*mb_head_off)(ptr, ptr + col);
  	    }
  
  	if (do_hex)
  	    while (col > 0 && vim_isxdigit(ptr[col]))
  	    {
  		--col;
  		if (has_mbyte)
  		    col -= (*mb_head_off)(ptr, ptr + col);
  	    }
  
  	if (       do_bin
  		&& do_hex
  		&& ! ((col > 0
  		    && (ptr[col] == 'X'
  			|| ptr[col] == 'x')
  		    && ptr[col - 1] == '0'
  		    && (!has_mbyte ||
  			!(*mb_head_off)(ptr, ptr + col - 1))
  		    && vim_isxdigit(ptr[col + 1]))))
  	{
  
  	    // In case of binary/hexadecimal pattern overlap match, rescan
  
  	    col = pos->col;
  
  	    while (col > 0 && vim_isdigit(ptr[col]))
  	    {
  		col--;
  		if (has_mbyte)
  		    col -= (*mb_head_off)(ptr, ptr + col);
  	    }
  	}
  
  	if ((       do_hex
  		&& col > 0
  		&& (ptr[col] == 'X'
  		    || ptr[col] == 'x')
  		&& ptr[col - 1] == '0'
  		&& (!has_mbyte ||
  		    !(*mb_head_off)(ptr, ptr + col - 1))
  		&& vim_isxdigit(ptr[col + 1])) ||
  	    (       do_bin
  		&& col > 0
  		&& (ptr[col] == 'B'
  		    || ptr[col] == 'b')
  		&& ptr[col - 1] == '0'
  		&& (!has_mbyte ||
  		    !(*mb_head_off)(ptr, ptr + col - 1))
  		&& vim_isbdigit(ptr[col + 1])))
  	{
  	    // Found hexadecimal or binary number, move to its start.
  	    --col;
  	    if (has_mbyte)
  		col -= (*mb_head_off)(ptr, ptr + col);
  	}
  	else
  	{
  	    /*
  	     * Search forward and then backward to find the start of number.
  	     */
  	    col = pos->col;
  
  	    while (ptr[col] != NUL
  		    && !vim_isdigit(ptr[col])
  		    && !(do_alpha && ASCII_ISALPHA(ptr[col])))
  		col += mb_ptr2len(ptr + col);
  
  	    while (col > 0
  		    && vim_isdigit(ptr[col - 1])
  		    && !(do_alpha && ASCII_ISALPHA(ptr[col])))
  	    {
  		--col;
  		if (has_mbyte)
  		    col -= (*mb_head_off)(ptr, ptr + col);
  	    }
  	}
      }
  
      if (visual)
      {
  	while (ptr[col] != NUL && length > 0
  		&& !vim_isdigit(ptr[col])
  		&& !(do_alpha && ASCII_ISALPHA(ptr[col])))
  	{
  	    int mb_len = mb_ptr2len(ptr + col);
  
  	    col += mb_len;
  	    length -= mb_len;
  	}
  
  	if (length == 0)
  	    goto theend;
  
  	if (col > pos->col && ptr[col - 1] == '-'
  		&& (!has_mbyte || !(*mb_head_off)(ptr, ptr + col - 1))
  		&& !do_unsigned)
  	{
  	    negative = TRUE;
  	    was_positive = FALSE;
  	}
      }
  
      /*
       * If a number was found, and saving for undo works, replace the number.
       */
      firstdigit = ptr[col];
      if (!VIM_ISDIGIT(firstdigit) && !(do_alpha && ASCII_ISALPHA(firstdigit)))
      {
  	beep_flush();
  	goto theend;
      }
  
      if (do_alpha && ASCII_ISALPHA(firstdigit))
      {
  	// decrement or increment alphabetic character
  	if (op_type == OP_NR_SUB)
  	{
  	    if (CharOrd(firstdigit) < Prenum1)
  	    {
  		if (isupper(firstdigit))
  		    firstdigit = 'A';
  		else
  		    firstdigit = 'a';
  	    }
  	    else
  #ifdef EBCDIC
  		firstdigit = EBCDIC_CHAR_ADD(firstdigit, -Prenum1);
  #else
  		firstdigit -= Prenum1;
  #endif
  	}
  	else
  	{
  	    if (26 - CharOrd(firstdigit) - 1 < Prenum1)
  	    {
  		if (isupper(firstdigit))
  		    firstdigit = 'Z';
  		else
  		    firstdigit = 'z';
  	    }
  	    else
  #ifdef EBCDIC
  		firstdigit = EBCDIC_CHAR_ADD(firstdigit, Prenum1);
  #else
  		firstdigit += Prenum1;
  #endif
  	}
  	curwin->w_cursor.col = col;
  	if (!did_change)
  	    startpos = curwin->w_cursor;
  	did_change = TRUE;
  	(void)del_char(FALSE);
  	ins_char(firstdigit);
  	endpos = curwin->w_cursor;
  	curwin->w_cursor.col = col;
      }
      else
      {
  	pos_T	save_pos;
  	int	i;
  
  	if (col > 0 && ptr[col - 1] == '-'
  		&& (!has_mbyte ||
  		    !(*mb_head_off)(ptr, ptr + col - 1))
  		&& !visual
  		&& !do_unsigned)
  	{
  	    // negative number
  	    --col;
  	    negative = TRUE;
  	}
  	// get the number value (unsigned)
  	if (visual && VIsual_mode != 'V')
  	    maxlen = (curbuf->b_visual.vi_curswant == MAXCOL
  		    ? (int)STRLEN(ptr) - col
  		    : length);
  
  	vim_str2nr(ptr + col, &pre, &length,
  		0 + (do_bin ? STR2NR_BIN : 0)
  		    + (do_oct ? STR2NR_OCT : 0)
  		    + (do_hex ? STR2NR_HEX : 0),
  		NULL, &n, maxlen, FALSE);
  
  	// ignore leading '-' for hex and octal and bin numbers
  	if (pre && negative)
  	{
  	    ++col;
  	    --length;
  	    negative = FALSE;
  	}
  	// add or subtract
  	subtract = FALSE;
  	if (op_type == OP_NR_SUB)
  	    subtract ^= TRUE;
  	if (negative)
  	    subtract ^= TRUE;
  
  	oldn = n;
  	if (subtract)
  	    n -= (uvarnumber_T)Prenum1;
  	else
  	    n += (uvarnumber_T)Prenum1;
  	// handle wraparound for decimal numbers
  	if (!pre)
  	{
  	    if (subtract)
  	    {
  		if (n > oldn)
  		{
  		    n = 1 + (n ^ (uvarnumber_T)-1);
  		    negative ^= TRUE;
  		}
  	    }
  	    else
  	    {
  		// add
  		if (n < oldn)
  		{
  		    n = (n ^ (uvarnumber_T)-1);
  		    negative ^= TRUE;
  		}
  	    }
  	    if (n == 0)
  		negative = FALSE;
  	}
  
  	if (do_unsigned && negative)
  	{
  	    if (subtract)
  		// sticking at zero.
  		n = (uvarnumber_T)0;
  	    else
  		// sticking at 2^64 - 1.
  		n = (uvarnumber_T)(-1);
  	    negative = FALSE;
  	}
  
  	if (visual && !was_positive && !negative && col > 0)
  	{
  	    // need to remove the '-'
  	    col--;
  	    length++;
  	}
  
  	/*
  	 * Delete the old number.
  	 */
  	curwin->w_cursor.col = col;
  	if (!did_change)
  	    startpos = curwin->w_cursor;
  	did_change = TRUE;
  	todel = length;
  	c = gchar_cursor();
  	/*
  	 * Don't include the '-' in the length, only the length of the
  	 * part after it is kept the same.
  	 */
  	if (c == '-')
  	    --length;
  
  	save_pos = curwin->w_cursor;
  	for (i = 0; i < todel; ++i)
  	{
  	    if (c < 0x100 && isalpha(c))
  	    {
  		if (isupper(c))
  		    hexupper = TRUE;
  		else
  		    hexupper = FALSE;
  	    }
  	    inc_cursor();
  	    c = gchar_cursor();
  	}
  	curwin->w_cursor = save_pos;
  
  	/*
  	 * Prepare the leading characters in buf1[].
  	 * When there are many leading zeros it could be very long.
  	 * Allocate a bit too much.
  	 */
  	buf1 = alloc(length + NUMBUFLEN);
  	if (buf1 == NULL)
  	    goto theend;
  	ptr = buf1;
  	if (negative && (!visual || was_positive))
  	    *ptr++ = '-';
  	if (pre)
  	{
  	    *ptr++ = '0';
  	    --length;
  	}
  	if (pre == 'b' || pre == 'B' ||
  	    pre == 'x' || pre == 'X')
  	{
  	    *ptr++ = pre;
  	    --length;
  	}
  
  	/*
  	 * Put the number characters in buf2[].
  	 */
  	if (pre == 'b' || pre == 'B')
  	{
  	    int bit = 0;
  	    int bits = sizeof(uvarnumber_T) * 8;
  
  	    // leading zeros
  	    for (bit = bits; bit > 0; bit--)
  		if ((n >> (bit - 1)) & 0x1) break;
  
  	    for (i = 0; bit > 0; bit--)
  		buf2[i++] = ((n >> (bit - 1)) & 0x1) ? '1' : '0';
  
  	    buf2[i] = '\0';
  	}
  	else if (pre == 0)
  	    vim_snprintf((char *)buf2, NUMBUFLEN, "%llu", (uvarnumber_T)n);
  	else if (pre == '0')
  	    vim_snprintf((char *)buf2, NUMBUFLEN, "%llo", (uvarnumber_T)n);
  	else if (pre && hexupper)
  	    vim_snprintf((char *)buf2, NUMBUFLEN, "%llX", (uvarnumber_T)n);
  	else
  	    vim_snprintf((char *)buf2, NUMBUFLEN, "%llx", (uvarnumber_T)n);
  	length -= (int)STRLEN(buf2);
  
  	/*
  	 * Adjust number of zeros to the new number of digits, so the
  	 * total length of the number remains the same.
  	 * Don't do this when
  	 * the result may look like an octal number.
  	 */
  	if (firstdigit == '0' && !(do_oct && pre == 0))
  	    while (length-- > 0)
  		*ptr++ = '0';
  	*ptr = NUL;
  
  	STRCAT(buf1, buf2);
  
  	// Insert just after the first character to be removed, so that any
  	// text properties will be adjusted.  Then delete the old number
  	// afterwards.
  	save_pos = curwin->w_cursor;
  	if (todel > 0)
  	    inc_cursor();
  	ins_str(buf1);		// insert the new number
  	vim_free(buf1);
  
  	// del_char() will also mark line needing displaying
  	if (todel > 0)
  	{
  	    int bytes_after = (int)STRLEN(ml_get_curline())
  							- curwin->w_cursor.col;
  
  	    // Delete the one character before the insert.
  	    curwin->w_cursor = save_pos;
  	    (void)del_char(FALSE);
  	    curwin->w_cursor.col = (colnr_T)(STRLEN(ml_get_curline())
  								- bytes_after);
  	    --todel;
  	}
  	while (todel-- > 0)
  	    (void)del_char(FALSE);
  
  	endpos = curwin->w_cursor;
  	if (did_change && curwin->w_cursor.col)
  	    --curwin->w_cursor.col;
      }
  
      if (did_change && (cmdmod.cmod_flags & CMOD_LOCKMARKS) == 0)
      {
  	// set the '[ and '] marks
  	curbuf->b_op_start = startpos;
  	curbuf->b_op_end = endpos;
  	if (curbuf->b_op_end.col > 0)
  	    --curbuf->b_op_end.col;
      }
  
  theend:
      if (visual)
  	curwin->w_cursor = save_cursor;
      else if (did_change)
  	curwin->w_set_curswant = TRUE;
      else if (virtual_active())
  	curwin->w_cursor.coladd = save_coladd;
  
      return did_change;
  }
  
      void
  clear_oparg(oparg_T *oap)
  {
      CLEAR_POINTER(oap);
  }
  
  /*
   *  Count the number of bytes, characters and "words" in a line.
   *
   *  "Words" are counted by looking for boundaries between non-space and
   *  space characters.  (it seems to produce results that match 'wc'.)
   *
   *  Return value is byte count; word count for the line is added to "*wc".
   *  Char count is added to "*cc".
   *
   *  The function will only examine the first "limit" characters in the
   *  line, stopping if it encounters an end-of-line (NUL byte).  In that
   *  case, eol_size will be added to the character count to account for
   *  the size of the EOL character.
   */
      static varnumber_T
  line_count_info(
      char_u	*line,
      varnumber_T	*wc,
      varnumber_T	*cc,
      varnumber_T	limit,
      int		eol_size)
  {
      varnumber_T	i;
      varnumber_T	words = 0;
      varnumber_T	chars = 0;
      int		is_word = 0;
  
      for (i = 0; i < limit && line[i] != NUL; )
      {
  	if (is_word)
  	{
  	    if (vim_isspace(line[i]))
  	    {
  		words++;
  		is_word = 0;
  	    }
  	}
  	else if (!vim_isspace(line[i]))
  	    is_word = 1;
  	++chars;
  	i += (*mb_ptr2len)(line + i);
      }
  
      if (is_word)
  	words++;
      *wc += words;
  
      // Add eol_size if the end of line was reached before hitting limit.
      if (i < limit && line[i] == NUL)
      {
  	i += eol_size;
  	chars += eol_size;
      }
      *cc += chars;
      return i;
  }
  
  /*
   * Give some info about the position of the cursor (for "g CTRL-G").
   * In Visual mode, give some info about the selected region.  (In this case,
   * the *_count_cursor variables store running totals for the selection.)
   * When "dict" is not NULL store the info there instead of showing it.
   */
      void
  cursor_pos_info(dict_T *dict)
  {
      char_u	*p;
      char_u	buf1[50];
      char_u	buf2[40];
      linenr_T	lnum;
      varnumber_T	byte_count = 0;
      varnumber_T	bom_count  = 0;
      varnumber_T	byte_count_cursor = 0;
      varnumber_T	char_count = 0;
      varnumber_T	char_count_cursor = 0;
      varnumber_T	word_count = 0;
      varnumber_T	word_count_cursor = 0;
      int		eol_size;
      varnumber_T	last_check = 100000L;
      long	line_count_selected = 0;
      pos_T	min_pos, max_pos;
      oparg_T	oparg;
      struct block_def	bd;
  
      /*
       * Compute the length of the file in characters.
       */
      if (curbuf->b_ml.ml_flags & ML_EMPTY)
      {
  	if (dict == NULL)
  	{
  	    msg(_(no_lines_msg));
  	    return;
  	}
      }
      else
      {
  	if (get_fileformat(curbuf) == EOL_DOS)
  	    eol_size = 2;
  	else
  	    eol_size = 1;
  
  	if (VIsual_active)
  	{
  	    if (LT_POS(VIsual, curwin->w_cursor))
  	    {
  		min_pos = VIsual;
  		max_pos = curwin->w_cursor;
  	    }
  	    else
  	    {
  		min_pos = curwin->w_cursor;
  		max_pos = VIsual;
  	    }
  	    if (*p_sel == 'e' && max_pos.col > 0)
  		--max_pos.col;
  
  	    if (VIsual_mode == Ctrl_V)
  	    {
  #ifdef FEAT_LINEBREAK
  		char_u * saved_sbr = p_sbr;
  		char_u * saved_w_sbr = curwin->w_p_sbr;
  
  		// Make 'sbr' empty for a moment to get the correct size.
  		p_sbr = empty_option;
  		curwin->w_p_sbr = empty_option;
  #endif
  		oparg.is_VIsual = 1;
  		oparg.block_mode = TRUE;
  		oparg.op_type = OP_NOP;
  		getvcols(curwin, &min_pos, &max_pos,
  					  &oparg.start_vcol, &oparg.end_vcol);
  #ifdef FEAT_LINEBREAK
  		p_sbr = saved_sbr;
  		curwin->w_p_sbr = saved_w_sbr;
  #endif
  		if (curwin->w_curswant == MAXCOL)
  		    oparg.end_vcol = MAXCOL;
  		// Swap the start, end vcol if needed
  		if (oparg.end_vcol < oparg.start_vcol)
  		{
  		    oparg.end_vcol += oparg.start_vcol;
  		    oparg.start_vcol = oparg.end_vcol - oparg.start_vcol;
  		    oparg.end_vcol -= oparg.start_vcol;
  		}
  	    }
  	    line_count_selected = max_pos.lnum - min_pos.lnum + 1;
  	}
  
  	for (lnum = 1; lnum <= curbuf->b_ml.ml_line_count; ++lnum)
  	{
  	    // Check for a CTRL-C every 100000 characters.
  	    if (byte_count > last_check)
  	    {
  		ui_breakcheck();
  		if (got_int)
  		    return;
  		last_check = byte_count + 100000L;
  	    }
  
  	    // Do extra processing for VIsual mode.
  	    if (VIsual_active
  		    && lnum >= min_pos.lnum && lnum <= max_pos.lnum)
  	    {
  		char_u	    *s = NULL;
  		long	    len = 0L;
  
  		switch (VIsual_mode)
  		{
  		    case Ctrl_V:
  			virtual_op = virtual_active();
  			block_prep(&oparg, &bd, lnum, 0);
  			virtual_op = MAYBE;
  			s = bd.textstart;
  			len = (long)bd.textlen;
  			break;
  		    case 'V':
  			s = ml_get(lnum);
  			len = MAXCOL;
  			break;
  		    case 'v':
  			{
  			    colnr_T start_col = (lnum == min_pos.lnum)
  							   ? min_pos.col : 0;
  			    colnr_T end_col = (lnum == max_pos.lnum)
  				      ? max_pos.col - start_col + 1 : MAXCOL;
  
  			    s = ml_get(lnum) + start_col;
  			    len = end_col;
  			}
  			break;
  		}
  		if (s != NULL)
  		{
  		    byte_count_cursor += line_count_info(s, &word_count_cursor,
  					   &char_count_cursor, len, eol_size);
  		    if (lnum == curbuf->b_ml.ml_line_count
  			    && !curbuf->b_p_eol
  			    && (curbuf->b_p_bin || !curbuf->b_p_fixeol)
  			    && (long)STRLEN(s) < len)
  			byte_count_cursor -= eol_size;
  		}
  	    }
  	    else
  	    {
  		// In non-visual mode, check for the line the cursor is on
  		if (lnum == curwin->w_cursor.lnum)
  		{
  		    word_count_cursor += word_count;
  		    char_count_cursor += char_count;
  		    byte_count_cursor = byte_count +
  			line_count_info(ml_get(lnum),
  				&word_count_cursor, &char_count_cursor,
  				(varnumber_T)(curwin->w_cursor.col + 1),
  				eol_size);
  		}
  	    }
  	    // Add to the running totals
  	    byte_count += line_count_info(ml_get(lnum), &word_count,
  					 &char_count, (varnumber_T)MAXCOL,
  					 eol_size);
  	}
  
  	// Correction for when last line doesn't have an EOL.
  	if (!curbuf->b_p_eol && (curbuf->b_p_bin || !curbuf->b_p_fixeol))
  	    byte_count -= eol_size;
  
  	if (dict == NULL)
  	{
  	    if (VIsual_active)
  	    {
  		if (VIsual_mode == Ctrl_V && curwin->w_curswant < MAXCOL)
  		{
  		    getvcols(curwin, &min_pos, &max_pos, &min_pos.col,
  								    &max_pos.col);
  		    vim_snprintf((char *)buf1, sizeof(buf1), _("%ld Cols; "),
  			    (long)(oparg.end_vcol - oparg.start_vcol + 1));
  		}
  		else
  		    buf1[0] = NUL;
  
  		if (char_count_cursor == byte_count_cursor
  						    && char_count == byte_count)
  		    vim_snprintf((char *)IObuff, IOSIZE,
  			    _("Selected %s%ld of %ld Lines; %lld of %lld Words; %lld of %lld Bytes"),
  			    buf1, line_count_selected,
  			    (long)curbuf->b_ml.ml_line_count,
  			    (varnumber_T)word_count_cursor,
  			    (varnumber_T)word_count,
  			    (varnumber_T)byte_count_cursor,
  			    (varnumber_T)byte_count);
  		else
  		    vim_snprintf((char *)IObuff, IOSIZE,
  			    _("Selected %s%ld of %ld Lines; %lld of %lld Words; %lld of %lld Chars; %lld of %lld Bytes"),
  			    buf1, line_count_selected,
  			    (long)curbuf->b_ml.ml_line_count,
  			    (varnumber_T)word_count_cursor,
  			    (varnumber_T)word_count,
  			    (varnumber_T)char_count_cursor,
  			    (varnumber_T)char_count,
  			    (varnumber_T)byte_count_cursor,
  			    (varnumber_T)byte_count);
  	    }
  	    else
  	    {
  		p = ml_get_curline();
  		validate_virtcol();
  		col_print(buf1, sizeof(buf1), (int)curwin->w_cursor.col + 1,
  			(int)curwin->w_virtcol + 1);
  		col_print(buf2, sizeof(buf2), (int)STRLEN(p),
  				    linetabsize(p));
  
  		if (char_count_cursor == byte_count_cursor
  			&& char_count == byte_count)
  		    vim_snprintf((char *)IObuff, IOSIZE,
  			_("Col %s of %s; Line %ld of %ld; Word %lld of %lld; Byte %lld of %lld"),
  			(char *)buf1, (char *)buf2,
  			(long)curwin->w_cursor.lnum,
  			(long)curbuf->b_ml.ml_line_count,
  			(varnumber_T)word_count_cursor, (varnumber_T)word_count,
  			(varnumber_T)byte_count_cursor, (varnumber_T)byte_count);
  		else
  		    vim_snprintf((char *)IObuff, IOSIZE,
  			_("Col %s of %s; Line %ld of %ld; Word %lld of %lld; Char %lld of %lld; Byte %lld of %lld"),
  			(char *)buf1, (char *)buf2,
  			(long)curwin->w_cursor.lnum,
  			(long)curbuf->b_ml.ml_line_count,
  			(varnumber_T)word_count_cursor, (varnumber_T)word_count,
  			(varnumber_T)char_count_cursor, (varnumber_T)char_count,
  			(varnumber_T)byte_count_cursor, (varnumber_T)byte_count);
  	    }
  	}
  
  	bom_count = bomb_size();
  	if (dict == NULL && bom_count > 0)
  	{
  	    size_t len = STRLEN(IObuff);
  
  	    vim_snprintf((char *)IObuff + len, IOSIZE - len,
  				 _("(+%lld for BOM)"), (varnumber_T)bom_count);
  	}
  	if (dict == NULL)
  	{
  	    // Don't shorten this message, the user asked for it.
  	    p = p_shm;
  	    p_shm = (char_u *)"";
  	    msg((char *)IObuff);
  	    p_shm = p;
  	}
      }
  #if defined(FEAT_EVAL)
      if (dict != NULL)
      {
  	dict_add_number(dict, "words", word_count);
  	dict_add_number(dict, "chars", char_count);
  	dict_add_number(dict, "bytes", byte_count + bom_count);
  	dict_add_number(dict, VIsual_active ? "visual_bytes" : "cursor_bytes",
  		byte_count_cursor);
  	dict_add_number(dict, VIsual_active ? "visual_chars" : "cursor_chars",
  		char_count_cursor);
  	dict_add_number(dict, VIsual_active ? "visual_words" : "cursor_words",
  		word_count_cursor);
      }
  #endif
  }
  
  /*
   * Handle indent and format operators and visual mode ":".
   */
      static void
  op_colon(oparg_T *oap)
  {
      stuffcharReadbuff(':');
      if (oap->is_VIsual)
  	stuffReadbuff((char_u *)"'<,'>");
      else
      {
  	// Make the range look nice, so it can be repeated.
  	if (oap->start.lnum == curwin->w_cursor.lnum)
  	    stuffcharReadbuff('.');
  	else
  	    stuffnumReadbuff((long)oap->start.lnum);
  	if (oap->end.lnum != oap->start.lnum)
  	{
  	    stuffcharReadbuff(',');
  	    if (oap->end.lnum == curwin->w_cursor.lnum)
  		stuffcharReadbuff('.');
  	    else if (oap->end.lnum == curbuf->b_ml.ml_line_count)
  		stuffcharReadbuff('$');
  	    else if (oap->start.lnum == curwin->w_cursor.lnum)
  	    {
  		stuffReadbuff((char_u *)".+");
  		stuffnumReadbuff((long)oap->line_count - 1);
  	    }
  	    else
  		stuffnumReadbuff((long)oap->end.lnum);
  	}
      }
      if (oap->op_type != OP_COLON)
  	stuffReadbuff((char_u *)"!");
      if (oap->op_type == OP_INDENT)
      {
  #ifndef FEAT_CINDENT
  	if (*get_equalprg() == NUL)
  	    stuffReadbuff((char_u *)"indent");
  	else
  #endif
  	    stuffReadbuff(get_equalprg());
  	stuffReadbuff((char_u *)"\n");
      }
      else if (oap->op_type == OP_FORMAT)
      {
  	if (*curbuf->b_p_fp != NUL)
  	    stuffReadbuff(curbuf->b_p_fp);
  	else if (*p_fp != NUL)
  	    stuffReadbuff(p_fp);
  	else
  	    stuffReadbuff((char_u *)"fmt");
  	stuffReadbuff((char_u *)"\n']");
      }
  
      // do_cmdline() does the rest
  }
  
  // callback function for 'operatorfunc'
  static callback_T opfunc_cb;
  
  /*
   * Process the 'operatorfunc' option value.
   * Returns OK or FAIL.
   */
      int
  set_operatorfunc_option(void)
  {
      return option_set_callback_func(p_opfunc, &opfunc_cb);
  }
  
  #if defined(EXITFREE) || defined(PROTO)
      void
  free_operatorfunc_option(void)
  {
  # ifdef FEAT_EVAL
      free_callback(&opfunc_cb);
  # endif
  }
  #endif
  
  /*
   * Mark the global 'operatorfunc' callback with 'copyID' so that it is not
   * garbage collected.
   */
      int
  set_ref_in_opfunc(int copyID UNUSED)
  {
      int abort = FALSE;
  
  #ifdef FEAT_EVAL
      abort = set_ref_in_callback(&opfunc_cb, copyID);
  #endif
  
      return abort;
  }
  
  /*
   * Handle the "g@" operator: call 'operatorfunc'.
   */
      static void
  op_function(oparg_T *oap UNUSED)
  {
  #ifdef FEAT_EVAL
      typval_T	argv[2];
      int		save_virtual_op = virtual_op;
      int		save_finish_op = finish_op;
      pos_T	orig_start = curbuf->b_op_start;
      pos_T	orig_end = curbuf->b_op_end;
      typval_T	rettv;
  
      if (*p_opfunc == NUL)
  	emsg(_(e_operatorfunc_is_empty));
      else
      {
  	// Set '[ and '] marks to text to be operated on.
  	curbuf->b_op_start = oap->start;
  	curbuf->b_op_end = oap->end;
  	if (oap->motion_type != MLINE && !oap->inclusive)
  	    // Exclude the end position.
  	    decl(&curbuf->b_op_end);
  
  	argv[0].v_type = VAR_STRING;
  	if (oap->block_mode)
  	    argv[0].vval.v_string = (char_u *)"block";
  	else if (oap->motion_type == MLINE)
  	    argv[0].vval.v_string = (char_u *)"line";
  	else
  	    argv[0].vval.v_string = (char_u *)"char";
  	argv[1].v_type = VAR_UNKNOWN;
  
  	// Reset virtual_op so that 'virtualedit' can be changed in the
  	// function.
  	virtual_op = MAYBE;
  
  	// Reset finish_op so that mode() returns the right value.
  	finish_op = FALSE;
  
  	if (call_callback(&opfunc_cb, 0, &rettv, 1, argv) != FAIL)
  	    clear_tv(&rettv);
  
  	virtual_op = save_virtual_op;
  	finish_op = save_finish_op;
  	if (cmdmod.cmod_flags & CMOD_LOCKMARKS)
  	{
  	    curbuf->b_op_start = orig_start;
  	    curbuf->b_op_end = orig_end;
  	}
      }
  #else
      emsg(_(e_eval_feature_not_available));
  #endif
  }
  
  /*
   * Calculate start/end virtual columns for operating in block mode.
   */
      static void
  get_op_vcol(
      oparg_T	*oap,
      colnr_T	redo_VIsual_vcol,
      int		initial)    // when TRUE adjust position for 'selectmode'
  {
      colnr_T	    start, end;
  
      if (VIsual_mode != Ctrl_V
  	    || (!initial && oap->end.col < curwin->w_width))
  	return;
  
      oap->block_mode = TRUE;
  
      // prevent from moving onto a trail byte
      if (has_mbyte)
  	mb_adjustpos(curwin->w_buffer, &oap->end);
  
      getvvcol(curwin, &(oap->start), &oap->start_vcol, NULL, &oap->end_vcol);
  
      if (!redo_VIsual_busy)
      {
  	getvvcol(curwin, &(oap->end), &start, NULL, &end);
  
  	if (start < oap->start_vcol)
  	    oap->start_vcol = start;
  	if (end > oap->end_vcol)
  	{
  	    if (initial && *p_sel == 'e' && start >= 1
  				    && start - 1 >= oap->end_vcol)
  		oap->end_vcol = start - 1;
  	    else
  		oap->end_vcol = end;
  	}
      }
  
      // if '$' was used, get oap->end_vcol from longest line
      if (curwin->w_curswant == MAXCOL)
      {
  	curwin->w_cursor.col = MAXCOL;
  	oap->end_vcol = 0;
  	for (curwin->w_cursor.lnum = oap->start.lnum;
  		curwin->w_cursor.lnum <= oap->end.lnum;
  					++curwin->w_cursor.lnum)
  	{
  	    getvvcol(curwin, &curwin->w_cursor, NULL, NULL, &end);
  	    if (end > oap->end_vcol)
  		oap->end_vcol = end;
  	}
      }
      else if (redo_VIsual_busy)
  	oap->end_vcol = oap->start_vcol + redo_VIsual_vcol - 1;
      // Correct oap->end.col and oap->start.col to be the
      // upper-left and lower-right corner of the block area.
      //
      // (Actually, this does convert column positions into character
      // positions)
      curwin->w_cursor.lnum = oap->end.lnum;
      coladvance(oap->end_vcol);
      oap->end = curwin->w_cursor;
  
      curwin->w_cursor = oap->start;
      coladvance(oap->start_vcol);
      oap->start = curwin->w_cursor;
  }
  
  // Information for redoing the previous Visual selection.
  typedef struct {
      int		rv_mode;	// 'v', 'V', or Ctrl-V
      linenr_T	rv_line_count;	// number of lines
      colnr_T	rv_vcol;	// number of cols or end column
      long	rv_count;	// count for Visual operator
      int		rv_arg;		// extra argument
  } redo_VIsual_T;
  
  /*
   * Handle an operator after Visual mode or when the movement is finished.
   * "gui_yank" is true when yanking text for the clipboard.
   */
      void
  do_pending_operator(cmdarg_T *cap, int old_col, int gui_yank)
  {
      oparg_T	*oap = cap->oap;
      pos_T	old_cursor;
      int		empty_region_error;
      int		restart_edit_save;
  #ifdef FEAT_LINEBREAK
      int		lbr_saved = curwin->w_p_lbr;
  #endif
  
      // The visual area is remembered for redo
      static redo_VIsual_T   redo_VIsual = {NUL, 0, 0, 0,0};
  
      int		    include_line_break = FALSE;
  
  #if defined(FEAT_CLIPBOARD)
      // Yank the visual area into the GUI selection register before we operate
      // on it and lose it forever.
      // Don't do it if a specific register was specified, so that ""x"*P works.
      // This could call do_pending_operator() recursively, but that's OK
      // because gui_yank will be TRUE for the nested call.
      if ((clip_star.available || clip_plus.available)
  	    && oap->op_type != OP_NOP
  	    && !gui_yank
  	    && VIsual_active
  	    && !redo_VIsual_busy
  	    && oap->regname == 0)
  	clip_auto_select();
  #endif
      old_cursor = curwin->w_cursor;
  
      // If an operation is pending, handle it...
      if ((finish_op || VIsual_active) && oap->op_type != OP_NOP)
      {
  	// Yank can be redone when 'y' is in 'cpoptions', but not when yanking
  	// for the clipboard.
  	int	redo_yank = vim_strchr(p_cpo, CPO_YANK) != NULL && !gui_yank;
  
  #ifdef FEAT_LINEBREAK
  	// Avoid a problem with unwanted linebreaks in block mode.
  	if (curwin->w_p_lbr)
  	    curwin->w_valid &= ~VALID_VIRTCOL;
  	curwin->w_p_lbr = FALSE;
  #endif
  	oap->is_VIsual = VIsual_active;
  	if (oap->motion_force == 'V')
  	    oap->motion_type = MLINE;
  	else if (oap->motion_force == 'v')
  	{
  	    // If the motion was linewise, "inclusive" will not have been set.
  	    // Use "exclusive" to be consistent.  Makes "dvj" work nice.
  	    if (oap->motion_type == MLINE)
  		oap->inclusive = FALSE;
  	    // If the motion already was characterwise, toggle "inclusive"
  	    else if (oap->motion_type == MCHAR)
  		oap->inclusive = !oap->inclusive;
  	    oap->motion_type = MCHAR;
  	}
  	else if (oap->motion_force == Ctrl_V)
  	{
  	    // Change line- or characterwise motion into Visual block mode.
  	    if (!VIsual_active)
  	    {
  		VIsual_active = TRUE;
  		VIsual = oap->start;
  	    }
  	    VIsual_mode = Ctrl_V;
  	    VIsual_select = FALSE;
  	    VIsual_reselect = FALSE;
  	}
  
  	// Only redo yank when 'y' flag is in 'cpoptions'.
  	// Never redo "zf" (define fold).
  	if ((redo_yank || oap->op_type != OP_YANK)
  		&& ((!VIsual_active || oap->motion_force)
  		    // Also redo Operator-pending Visual mode mappings
  		    || (VIsual_active
  			  && (cap->cmdchar == ':' || cap->cmdchar == K_COMMAND)
  						  && oap->op_type != OP_COLON))
  		&& cap->cmdchar != 'D'
  #ifdef FEAT_FOLDING
  		&& oap->op_type != OP_FOLD
  		&& oap->op_type != OP_FOLDOPEN
  		&& oap->op_type != OP_FOLDOPENREC
  		&& oap->op_type != OP_FOLDCLOSE
  		&& oap->op_type != OP_FOLDCLOSEREC
  		&& oap->op_type != OP_FOLDDEL
  		&& oap->op_type != OP_FOLDDELREC
  #endif
  		)
  	{
  	    prep_redo(oap->regname, cap->count0,
  		    get_op_char(oap->op_type), get_extra_op_char(oap->op_type),
  		    oap->motion_force, cap->cmdchar, cap->nchar);
  	    if (cap->cmdchar == '/' || cap->cmdchar == '?') // was a search
  	    {
  		// If 'cpoptions' does not contain 'r', insert the search
  		// pattern to really repeat the same command.
  		if (vim_strchr(p_cpo, CPO_REDO) == NULL)
  		    AppendToRedobuffLit(cap->searchbuf, -1);
  		AppendToRedobuff(NL_STR);
  	    }
  	    else if (cap->cmdchar == ':' || cap->cmdchar == K_COMMAND)
  	    {
  		// do_cmdline() has stored the first typed line in
  		// "repeat_cmdline".  When several lines are typed repeating
  		// won't be possible.
  		if (repeat_cmdline == NULL)
  		    ResetRedobuff();
  		else
  		{
  		    AppendToRedobuffLit(repeat_cmdline, -1);
  		    AppendToRedobuff(NL_STR);
  		    VIM_CLEAR(repeat_cmdline);
  		}
  	    }
  	}
  
  	if (redo_VIsual_busy)
  	{
  	    // Redo of an operation on a Visual area. Use the same size from
  	    // redo_VIsual.rv_line_count and redo_VIsual.rv_vcol.
  	    oap->start = curwin->w_cursor;
  	    curwin->w_cursor.lnum += redo_VIsual.rv_line_count - 1;
  	    if (curwin->w_cursor.lnum > curbuf->b_ml.ml_line_count)
  		curwin->w_cursor.lnum = curbuf->b_ml.ml_line_count;
  	    VIsual_mode = redo_VIsual.rv_mode;
  	    if (redo_VIsual.rv_vcol == MAXCOL || VIsual_mode == 'v')
  	    {
  		if (VIsual_mode == 'v')
  		{
  		    if (redo_VIsual.rv_line_count <= 1)
  		    {
  			validate_virtcol();
  			curwin->w_curswant =
  				     curwin->w_virtcol + redo_VIsual.rv_vcol - 1;
  		    }
  		    else
  			curwin->w_curswant = redo_VIsual.rv_vcol;
  		}
  		else
  		{
  		    curwin->w_curswant = MAXCOL;
  		}
  		coladvance(curwin->w_curswant);
  	    }
  	    cap->count0 = redo_VIsual.rv_count;
  	    if (redo_VIsual.rv_count != 0)
  		cap->count1 = redo_VIsual.rv_count;
  	    else
  		cap->count1 = 1;
  	}
  	else if (VIsual_active)
  	{
  	    if (!gui_yank)
  	    {
  		// Save the current VIsual area for '< and '> marks, and "gv"
  		curbuf->b_visual.vi_start = VIsual;
  		curbuf->b_visual.vi_end = curwin->w_cursor;
  		curbuf->b_visual.vi_mode = VIsual_mode;
  		restore_visual_mode();
  		curbuf->b_visual.vi_curswant = curwin->w_curswant;
  # ifdef FEAT_EVAL
  		curbuf->b_visual_mode_eval = VIsual_mode;
  # endif
  	    }
  
  	    // In Select mode, a linewise selection is operated upon like a
  	    // characterwise selection.
  	    // Special case: gH<Del> deletes the last line.
  	    if (VIsual_select && VIsual_mode == 'V'
  					    && cap->oap->op_type != OP_DELETE)
  	    {
  		if (LT_POS(VIsual, curwin->w_cursor))
  		{
  		    VIsual.col = 0;
  		    curwin->w_cursor.col =
  			       (colnr_T)STRLEN(ml_get(curwin->w_cursor.lnum));
  		}
  		else
  		{
  		    curwin->w_cursor.col = 0;
  		    VIsual.col = (colnr_T)STRLEN(ml_get(VIsual.lnum));
  		}
  		VIsual_mode = 'v';
  	    }
  	    // If 'selection' is "exclusive", backup one character for
  	    // charwise selections.
  	    else if (VIsual_mode == 'v')
  		include_line_break = unadjust_for_sel();
  
  	    oap->start = VIsual;
  	    if (VIsual_mode == 'V')
  	    {
  		oap->start.col = 0;
  		oap->start.coladd = 0;
  	    }
  	}
  
  	// Set oap->start to the first position of the operated text, oap->end
  	// to the end of the operated text.  w_cursor is equal to oap->start.
  	if (LT_POS(oap->start, curwin->w_cursor))
  	{
  #ifdef FEAT_FOLDING
  	    // Include folded lines completely.
  	    if (!VIsual_active)
  	    {
  		if (hasFolding(oap->start.lnum, &oap->start.lnum, NULL))
  		    oap->start.col = 0;
  		if ((curwin->w_cursor.col > 0 || oap->inclusive
  						  || oap->motion_type == MLINE)
  			&& hasFolding(curwin->w_cursor.lnum, NULL,
  						      &curwin->w_cursor.lnum))
  		    curwin->w_cursor.col = (colnr_T)STRLEN(ml_get_curline());
  	    }
  #endif
  	    oap->end = curwin->w_cursor;
  	    curwin->w_cursor = oap->start;
  
  	    // w_virtcol may have been updated; if the cursor goes back to its
  	    // previous position w_virtcol becomes invalid and isn't updated
  	    // automatically.
  	    curwin->w_valid &= ~VALID_VIRTCOL;
  	}
  	else
  	{
  #ifdef FEAT_FOLDING
  	    // Include folded lines completely.
  	    if (!VIsual_active && oap->motion_type == MLINE)
  	    {
  		if (hasFolding(curwin->w_cursor.lnum, &curwin->w_cursor.lnum,
  									NULL))
  		    curwin->w_cursor.col = 0;
  		if (hasFolding(oap->start.lnum, NULL, &oap->start.lnum))
  		    oap->start.col = (colnr_T)STRLEN(ml_get(oap->start.lnum));
  	    }
  #endif
  	    oap->end = oap->start;
  	    oap->start = curwin->w_cursor;
  	}
  
  	// Just in case lines were deleted that make the position invalid.
  	check_pos(curwin->w_buffer, &oap->end);
  	oap->line_count = oap->end.lnum - oap->start.lnum + 1;
  
  	// Set "virtual_op" before resetting VIsual_active.
  	virtual_op = virtual_active();
  
  	if (VIsual_active || redo_VIsual_busy)
  	{
  	    get_op_vcol(oap, redo_VIsual.rv_vcol, TRUE);
  
  	    if (!redo_VIsual_busy && !gui_yank)
  	    {
  		// Prepare to reselect and redo Visual: this is based on the
  		// size of the Visual text
  		resel_VIsual_mode = VIsual_mode;
  		if (curwin->w_curswant == MAXCOL)
  		    resel_VIsual_vcol = MAXCOL;
  		else
  		{
  		    if (VIsual_mode != Ctrl_V)
  			getvvcol(curwin, &(oap->end),
  						  NULL, NULL, &oap->end_vcol);
  		    if (VIsual_mode == Ctrl_V || oap->line_count <= 1)
  		    {
  			if (VIsual_mode != Ctrl_V)
  			    getvvcol(curwin, &(oap->start),
  						&oap->start_vcol, NULL, NULL);
  			resel_VIsual_vcol = oap->end_vcol - oap->start_vcol + 1;
  		    }
  		    else
  			resel_VIsual_vcol = oap->end_vcol;
  		}
  		resel_VIsual_line_count = oap->line_count;
  	    }
  
  	    // can't redo yank (unless 'y' is in 'cpoptions') and ":"
  	    if ((redo_yank || oap->op_type != OP_YANK)
  		    && oap->op_type != OP_COLON
  #ifdef FEAT_FOLDING
  		    && oap->op_type != OP_FOLD
  		    && oap->op_type != OP_FOLDOPEN
  		    && oap->op_type != OP_FOLDOPENREC
  		    && oap->op_type != OP_FOLDCLOSE
  		    && oap->op_type != OP_FOLDCLOSEREC
  		    && oap->op_type != OP_FOLDDEL
  		    && oap->op_type != OP_FOLDDELREC
  #endif
  		    && oap->motion_force == NUL
  		    )
  	    {
  		// Prepare for redoing.  Only use the nchar field for "r",
  		// otherwise it might be the second char of the operator.
  		if (cap->cmdchar == 'g' && (cap->nchar == 'n'
  							|| cap->nchar == 'N'))
  		    prep_redo(oap->regname, cap->count0,
  			    get_op_char(oap->op_type),
  			    get_extra_op_char(oap->op_type),
  			    oap->motion_force, cap->cmdchar, cap->nchar);
  		else if (cap->cmdchar != ':' && cap->cmdchar != K_COMMAND)
  		{
  		    int opchar = get_op_char(oap->op_type);
  		    int extra_opchar = get_extra_op_char(oap->op_type);
  		    int nchar = oap->op_type == OP_REPLACE ? cap->nchar : NUL;
  
  		    // reverse what nv_replace() did
  		    if (nchar == REPLACE_CR_NCHAR)
  			nchar = CAR;
  		    else if (nchar == REPLACE_NL_NCHAR)
  			nchar = NL;
  
  		    if (opchar == 'g' && extra_opchar == '@')
  			// also repeat the count for 'operatorfunc'
  			prep_redo_num2(oap->regname, 0L, NUL, 'v',
  				     cap->count0, opchar, extra_opchar, nchar);
  		    else
  			prep_redo(oap->regname, 0L, NUL, 'v',
  						  opchar, extra_opchar, nchar);
  		}
  		if (!redo_VIsual_busy)
  		{
  		    redo_VIsual.rv_mode = resel_VIsual_mode;
  		    redo_VIsual.rv_vcol = resel_VIsual_vcol;
  		    redo_VIsual.rv_line_count = resel_VIsual_line_count;
  		    redo_VIsual.rv_count = cap->count0;
  		    redo_VIsual.rv_arg = cap->arg;
  		}
  	    }
  
  	    // oap->inclusive defaults to TRUE.
  	    // If oap->end is on a NUL (empty line) oap->inclusive becomes
  	    // FALSE.  This makes "d}P" and "v}dP" work the same.
  	    if (oap->motion_force == NUL || oap->motion_type == MLINE)
  		oap->inclusive = TRUE;
  	    if (VIsual_mode == 'V')
  		oap->motion_type = MLINE;
  	    else
  	    {
  		oap->motion_type = MCHAR;
  		if (VIsual_mode != Ctrl_V && *ml_get_pos(&(oap->end)) == NUL
  			&& (include_line_break || !virtual_op))
  		{
  		    oap->inclusive = FALSE;
  		    // Try to include the newline, unless it's an operator
  		    // that works on lines only.
  		    if (*p_sel != 'o'
  			    && !op_on_lines(oap->op_type)
  			    && oap->end.lnum < curbuf->b_ml.ml_line_count)
  		    {
  			++oap->end.lnum;
  			oap->end.col = 0;
  			oap->end.coladd = 0;
  			++oap->line_count;
  		    }
  		}
  	    }
  
  	    redo_VIsual_busy = FALSE;
  
  	    // Switch Visual off now, so screen updating does
  	    // not show inverted text when the screen is redrawn.
  	    // With OP_YANK and sometimes with OP_COLON and OP_FILTER there is
  	    // no screen redraw, so it is done here to remove the inverted
  	    // part.
  	    if (!gui_yank)
  	    {
  		VIsual_active = FALSE;
  		setmouse();
  		mouse_dragging = 0;
  		may_clear_cmdline();
  		if ((oap->op_type == OP_YANK
  			    || oap->op_type == OP_COLON
  			    || oap->op_type == OP_FUNCTION
  			    || oap->op_type == OP_FILTER)
  			&& oap->motion_force == NUL)
  		{
  #ifdef FEAT_LINEBREAK
  		    // make sure redrawing is correct
  		    curwin->w_p_lbr = lbr_saved;
  #endif
  		    redraw_curbuf_later(INVERTED);
  		}
  	    }
  	}
  
  	// Include the trailing byte of a multi-byte char.
  	if (has_mbyte && oap->inclusive)
  	{
  	    int		l;
  
  	    l = (*mb_ptr2len)(ml_get_pos(&oap->end));
  	    if (l > 1)
  		oap->end.col += l - 1;
  	}
  	curwin->w_set_curswant = TRUE;
  
  	// oap->empty is set when start and end are the same.  The inclusive
  	// flag affects this too, unless yanking and the end is on a NUL.
  	oap->empty = (oap->motion_type == MCHAR
  		    && (!oap->inclusive
  			|| (oap->op_type == OP_YANK
  			    && gchar_pos(&oap->end) == NUL))
  		    && EQUAL_POS(oap->start, oap->end)
  		    && !(virtual_op && oap->start.coladd != oap->end.coladd));
  	// For delete, change and yank, it's an error to operate on an
  	// empty region, when 'E' included in 'cpoptions' (Vi compatible).
  	empty_region_error = (oap->empty
  				&& vim_strchr(p_cpo, CPO_EMPTYREGION) != NULL);
  
  	// Force a redraw when operating on an empty Visual region, when
  	// 'modifiable is off or creating a fold.
  	if (oap->is_VIsual && (oap->empty || !curbuf->b_p_ma
  #ifdef FEAT_FOLDING
  		    || oap->op_type == OP_FOLD
  #endif
  		    ))
  	{
  #ifdef FEAT_LINEBREAK
  	    curwin->w_p_lbr = lbr_saved;
  #endif
  	    redraw_curbuf_later(INVERTED);
  	}
  
  	// If the end of an operator is in column one while oap->motion_type
  	// is MCHAR and oap->inclusive is FALSE, we put op_end after the last
  	// character in the previous line. If op_start is on or before the
  	// first non-blank in the line, the operator becomes linewise
  	// (strange, but that's the way vi does it).
  	if (	   oap->motion_type == MCHAR
  		&& oap->inclusive == FALSE
  		&& !(cap->retval & CA_NO_ADJ_OP_END)
  		&& oap->end.col == 0
  		&& (!oap->is_VIsual || *p_sel == 'o')
  		&& !oap->block_mode
  		&& oap->line_count > 1)
  	{
  	    oap->end_adjusted = TRUE;	    // remember that we did this
  	    --oap->line_count;
  	    --oap->end.lnum;
  	    if (inindent(0))
  		oap->motion_type = MLINE;
  	    else
  	    {
  		oap->end.col = (colnr_T)STRLEN(ml_get(oap->end.lnum));
  		if (oap->end.col)
  		{
  		    --oap->end.col;
  		    oap->inclusive = TRUE;
  		}
  	    }
  	}
  	else
  	    oap->end_adjusted = FALSE;
  
  	switch (oap->op_type)
  	{
  	case OP_LSHIFT:
  	case OP_RSHIFT:
  	    op_shift(oap, TRUE, oap->is_VIsual ? (int)cap->count1 : 1);
  	    auto_format(FALSE, TRUE);
  	    break;
  
  	case OP_JOIN_NS:
  	case OP_JOIN:
  	    if (oap->line_count < 2)
  		oap->line_count = 2;
  	    if (curwin->w_cursor.lnum + oap->line_count - 1 >
  						   curbuf->b_ml.ml_line_count)
  		beep_flush();
  	    else
  	    {
  		(void)do_join(oap->line_count, oap->op_type == OP_JOIN,
  							    TRUE, TRUE, TRUE);
  		auto_format(FALSE, TRUE);
  	    }
  	    break;
  
  	case OP_DELETE:
  	    VIsual_reselect = FALSE;	    // don't reselect now
  	    if (empty_region_error)
  	    {
  		vim_beep(BO_OPER);
  		CancelRedo();
  	    }
  	    else
  	    {
  		(void)op_delete(oap);
  		// save cursor line for undo if it wasn't saved yet
  		if (oap->motion_type == MLINE && has_format_option(FO_AUTO)
  						      && u_save_cursor() == OK)
  		    auto_format(FALSE, TRUE);
  	    }
  	    break;
  
  	case OP_YANK:
  	    if (empty_region_error)
  	    {
  		if (!gui_yank)
  		{
  		    vim_beep(BO_OPER);
  		    CancelRedo();
  		}
  	    }
  	    else
  	    {
  #ifdef FEAT_LINEBREAK
  		curwin->w_p_lbr = lbr_saved;
  #endif
  		oap->excl_tr_ws = cap->cmdchar == 'z';
  		(void)op_yank(oap, FALSE, !gui_yank);
  	    }
  	    check_cursor_col();
  	    break;
  
  	case OP_CHANGE:
  	    VIsual_reselect = FALSE;	    // don't reselect now
  	    if (empty_region_error)
  	    {
  		vim_beep(BO_OPER);
  		CancelRedo();
  	    }
  	    else
  	    {
  		// This is a new edit command, not a restart.  Need to
  		// remember it to make 'insertmode' work with mappings for
  		// Visual mode.  But do this only once and not when typed and
  		// 'insertmode' isn't set.
  		if (p_im || !KeyTyped)
  		    restart_edit_save = restart_edit;
  		else
  		    restart_edit_save = 0;
  		restart_edit = 0;
  #ifdef FEAT_LINEBREAK
  		// Restore linebreak, so that when the user edits it looks as
  		// before.
  		curwin->w_p_lbr = lbr_saved;
  #endif
  		// Reset finish_op now, don't want it set inside edit().
  		finish_op = FALSE;
  		if (op_change(oap))	// will call edit()
  		    cap->retval |= CA_COMMAND_BUSY;
  		if (restart_edit == 0)
  		    restart_edit = restart_edit_save;
  	    }
  	    break;
  
  	case OP_FILTER:
  	    if (vim_strchr(p_cpo, CPO_FILTER) != NULL)
  		AppendToRedobuff((char_u *)"!\r");  // use any last used !cmd
  	    else
  		bangredo = TRUE;    // do_bang() will put cmd in redo buffer
  	    // FALLTHROUGH
  
  	case OP_INDENT:
  	case OP_COLON:
  
  #if defined(FEAT_LISP) || defined(FEAT_CINDENT)
  	    // If 'equalprg' is empty, do the indenting internally.
  	    if (oap->op_type == OP_INDENT && *get_equalprg() == NUL)
  	    {
  # ifdef FEAT_LISP
  		if (curbuf->b_p_lisp)
  		{
  		    op_reindent(oap, get_lisp_indent);
  		    break;
  		}
  # endif
  # ifdef FEAT_CINDENT
  		op_reindent(oap,
  #  ifdef FEAT_EVAL
  			*curbuf->b_p_inde != NUL ? get_expr_indent :
  #  endif
  			    get_c_indent);
  		break;
  # endif
  	    }
  #endif
  
  	    op_colon(oap);
  	    break;
  
  	case OP_TILDE:
  	case OP_UPPER:
  	case OP_LOWER:
  	case OP_ROT13:
  	    if (empty_region_error)
  	    {
  		vim_beep(BO_OPER);
  		CancelRedo();
  	    }
  	    else
  		op_tilde(oap);
  	    check_cursor_col();
  	    break;
  
  	case OP_FORMAT:
  #if defined(FEAT_EVAL)
  	    if (*curbuf->b_p_fex != NUL)
  		op_formatexpr(oap);	// use expression
  	    else
  #endif
  	    {
  		if (*p_fp != NUL || *curbuf->b_p_fp != NUL)
  		    op_colon(oap);		// use external command
  		else
  		    op_format(oap, FALSE);	// use internal function
  	    }
  	    break;
  	case OP_FORMAT2:
  	    op_format(oap, TRUE);	// use internal function
  	    break;
  
  	case OP_FUNCTION:
  	    {
  		redo_VIsual_T   save_redo_VIsual = redo_VIsual;
  
  #ifdef FEAT_LINEBREAK
  		// Restore linebreak, so that when the user edits it looks as
  		// before.
  		curwin->w_p_lbr = lbr_saved;
  #endif
  		// call 'operatorfunc'
  		op_function(oap);
  
  		// Restore the info for redoing Visual mode, the function may
  		// invoke another operator and unintentionally change it.
  		redo_VIsual = save_redo_VIsual;
  		break;
  	    }
  
  	case OP_INSERT:
  	case OP_APPEND:
  	    VIsual_reselect = FALSE;	// don't reselect now
  	    if (empty_region_error)
  	    {
  		vim_beep(BO_OPER);
  		CancelRedo();
  	    }
  	    else
  	    {
  		// This is a new edit command, not a restart.  Need to
  		// remember it to make 'insertmode' work with mappings for
  		// Visual mode.  But do this only once.
  		restart_edit_save = restart_edit;
  		restart_edit = 0;
  #ifdef FEAT_LINEBREAK
  		// Restore linebreak, so that when the user edits it looks as
  		// before.
  		curwin->w_p_lbr = lbr_saved;
  #endif
  		op_insert(oap, cap->count1);
  #ifdef FEAT_LINEBREAK
  		// Reset linebreak, so that formatting works correctly.
  		curwin->w_p_lbr = FALSE;
  #endif
  
  		// TODO: when inserting in several lines, should format all
  		// the lines.
  		auto_format(FALSE, TRUE);
  
  		if (restart_edit == 0)
  		    restart_edit = restart_edit_save;
  		else
  		    cap->retval |= CA_COMMAND_BUSY;
  	    }
  	    break;
  
  	case OP_REPLACE:
  	    VIsual_reselect = FALSE;	// don't reselect now
  	    if (empty_region_error)
  	    {
  		vim_beep(BO_OPER);
  		CancelRedo();
  	    }
  	    else
  	    {
  #ifdef FEAT_LINEBREAK
  		// Restore linebreak, so that when the user edits it looks as
  		// before.
  		curwin->w_p_lbr = lbr_saved;
  #endif
  		op_replace(oap, cap->nchar);
  	    }
  	    break;
  
  #ifdef FEAT_FOLDING
  	case OP_FOLD:
  	    VIsual_reselect = FALSE;	// don't reselect now
  	    foldCreate(oap->start.lnum, oap->end.lnum);
  	    break;
  
  	case OP_FOLDOPEN:
  	case OP_FOLDOPENREC:
  	case OP_FOLDCLOSE:
  	case OP_FOLDCLOSEREC:
  	    VIsual_reselect = FALSE;	// don't reselect now
  	    opFoldRange(oap->start.lnum, oap->end.lnum,
  		    oap->op_type == OP_FOLDOPEN
  					    || oap->op_type == OP_FOLDOPENREC,
  		    oap->op_type == OP_FOLDOPENREC
  					  || oap->op_type == OP_FOLDCLOSEREC,
  					  oap->is_VIsual);
  	    break;
  
  	case OP_FOLDDEL:
  	case OP_FOLDDELREC:
  	    VIsual_reselect = FALSE;	// don't reselect now
  	    deleteFold(oap->start.lnum, oap->end.lnum,
  			       oap->op_type == OP_FOLDDELREC, oap->is_VIsual);
  	    break;
  #endif
  	case OP_NR_ADD:
  	case OP_NR_SUB:
  	    if (empty_region_error)
  	    {
  		vim_beep(BO_OPER);
  		CancelRedo();
  	    }
  	    else
  	    {
  		VIsual_active = TRUE;
  #ifdef FEAT_LINEBREAK
  		curwin->w_p_lbr = lbr_saved;
  #endif
  		op_addsub(oap, cap->count1, redo_VIsual.rv_arg);
  		VIsual_active = FALSE;
  	    }
  	    check_cursor_col();
  	    break;
  	default:
  	    clearopbeep(oap);
  	}
  	virtual_op = MAYBE;
  	if (!gui_yank)
  	{
  	    // if 'sol' not set, go back to old column for some commands
  	    if (!p_sol && oap->motion_type == MLINE && !oap->end_adjusted
  		    && (oap->op_type == OP_LSHIFT || oap->op_type == OP_RSHIFT
  						|| oap->op_type == OP_DELETE))
  	    {
  #ifdef FEAT_LINEBREAK
  		curwin->w_p_lbr = FALSE;
  #endif
  		coladvance(curwin->w_curswant = old_col);
  	    }
  	}
  	else
  	{
  	    curwin->w_cursor = old_cursor;
  	}
  	oap->block_mode = FALSE;
  	clearop(oap);
  	motion_force = NUL;
      }
  #ifdef FEAT_LINEBREAK
      curwin->w_p_lbr = lbr_saved;
  #endif
  }
  