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misc1.c
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misc1.c
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/* vi:set ts=8 sts=4 sw=4:
*
* VIM - Vi IMproved by Bram Moolenaar
*
* Do ":help uganda" in Vim to read copying and usage conditions.
* Do ":help credits" in Vim to see a list of people who contributed.
* See README.txt for an overview of the Vim source code.
*/
/*
* misc1.c: functions that didn't seem to fit elsewhere
*/
#include "vim.h"
#include "version.h"
static char_u *vim_version_dir __ARGS((char_u *vimdir));
static char_u *remove_tail __ARGS((char_u *p, char_u *pend, char_u *name));
static int copy_indent __ARGS((int size, char_u *src));
/*
* Count the size (in window cells) of the indent in the current line.
*/
int
get_indent()
{
return get_indent_str(ml_get_curline(), (int)curbuf->b_p_ts);
}
/*
* Count the size (in window cells) of the indent in line "lnum".
*/
int
get_indent_lnum(lnum)
linenr_T lnum;
{
return get_indent_str(ml_get(lnum), (int)curbuf->b_p_ts);
}
#if defined(FEAT_FOLDING) || defined(PROTO)
/*
* Count the size (in window cells) of the indent in line "lnum" of buffer
* "buf".
*/
int
get_indent_buf(buf, lnum)
buf_T *buf;
linenr_T lnum;
{
return get_indent_str(ml_get_buf(buf, lnum, FALSE), (int)buf->b_p_ts);
}
#endif
/*
* count the size (in window cells) of the indent in line "ptr", with
* 'tabstop' at "ts"
*/
int
get_indent_str(ptr, ts)
char_u *ptr;
int ts;
{
int count = 0;
for ( ; *ptr; ++ptr)
{
if (*ptr == TAB) /* count a tab for what it is worth */
count += ts - (count % ts);
else if (*ptr == ' ')
++count; /* count a space for one */
else
break;
}
return count;
}
/*
* Set the indent of the current line.
* Leaves the cursor on the first non-blank in the line.
* Caller must take care of undo.
* "flags":
* SIN_CHANGED: call changed_bytes() if the line was changed.
* SIN_INSERT: insert the indent in front of the line.
* SIN_UNDO: save line for undo before changing it.
* Returns TRUE if the line was changed.
*/
int
set_indent(size, flags)
int size; /* measured in spaces */
int flags;
{
char_u *p;
char_u *newline;
char_u *oldline;
char_u *s;
int todo;
int ind_len; /* measured in characters */
int line_len;
int doit = FALSE;
int ind_done = 0; /* measured in spaces */
int tab_pad;
int retval = FALSE;
int orig_char_len = -1; /* number of initial whitespace chars when
'et' and 'pi' are both set */
/*
* First check if there is anything to do and compute the number of
* characters needed for the indent.
*/
todo = size;
ind_len = 0;
p = oldline = ml_get_curline();
/* Calculate the buffer size for the new indent, and check to see if it
* isn't already set */
/* if 'expandtab' isn't set: use TABs; if both 'expandtab' and
* 'preserveindent' are set count the number of characters at the
* beginning of the line to be copied */
if (!curbuf->b_p_et || (!(flags & SIN_INSERT) && curbuf->b_p_pi))
{
/* If 'preserveindent' is set then reuse as much as possible of
* the existing indent structure for the new indent */
if (!(flags & SIN_INSERT) && curbuf->b_p_pi)
{
ind_done = 0;
/* count as many characters as we can use */
while (todo > 0 && vim_iswhite(*p))
{
if (*p == TAB)
{
tab_pad = (int)curbuf->b_p_ts
- (ind_done % (int)curbuf->b_p_ts);
/* stop if this tab will overshoot the target */
if (todo < tab_pad)
break;
todo -= tab_pad;
++ind_len;
ind_done += tab_pad;
}
else
{
--todo;
++ind_len;
++ind_done;
}
++p;
}
/* Set initial number of whitespace chars to copy if we are
* preserving indent but expandtab is set */
if (curbuf->b_p_et)
orig_char_len = ind_len;
/* Fill to next tabstop with a tab, if possible */
tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts);
if (todo >= tab_pad && orig_char_len == -1)
{
doit = TRUE;
todo -= tab_pad;
++ind_len;
/* ind_done += tab_pad; */
}
}
/* count tabs required for indent */
while (todo >= (int)curbuf->b_p_ts)
{
if (*p != TAB)
doit = TRUE;
else
++p;
todo -= (int)curbuf->b_p_ts;
++ind_len;
/* ind_done += (int)curbuf->b_p_ts; */
}
}
/* count spaces required for indent */
while (todo > 0)
{
if (*p != ' ')
doit = TRUE;
else
++p;
--todo;
++ind_len;
/* ++ind_done; */
}
/* Return if the indent is OK already. */
if (!doit && !vim_iswhite(*p) && !(flags & SIN_INSERT))
return FALSE;
/* Allocate memory for the new line. */
if (flags & SIN_INSERT)
p = oldline;
else
p = skipwhite(p);
line_len = (int)STRLEN(p) + 1;
/* If 'preserveindent' and 'expandtab' are both set keep the original
* characters and allocate accordingly. We will fill the rest with spaces
* after the if (!curbuf->b_p_et) below. */
if (orig_char_len != -1)
{
newline = alloc(orig_char_len + size - ind_done + line_len);
if (newline == NULL)
return FALSE;
todo = size - ind_done;
ind_len = orig_char_len + todo; /* Set total length of indent in
* characters, which may have been
* undercounted until now */
p = oldline;
s = newline;
while (orig_char_len > 0)
{
*s++ = *p++;
orig_char_len--;
}
/* Skip over any additional white space (useful when newindent is less
* than old) */
while (vim_iswhite(*p))
++p;
}
else
{
todo = size;
newline = alloc(ind_len + line_len);
if (newline == NULL)
return FALSE;
s = newline;
}
/* Put the characters in the new line. */
/* if 'expandtab' isn't set: use TABs */
if (!curbuf->b_p_et)
{
/* If 'preserveindent' is set then reuse as much as possible of
* the existing indent structure for the new indent */
if (!(flags & SIN_INSERT) && curbuf->b_p_pi)
{
p = oldline;
ind_done = 0;
while (todo > 0 && vim_iswhite(*p))
{
if (*p == TAB)
{
tab_pad = (int)curbuf->b_p_ts
- (ind_done % (int)curbuf->b_p_ts);
/* stop if this tab will overshoot the target */
if (todo < tab_pad)
break;
todo -= tab_pad;
ind_done += tab_pad;
}
else
{
--todo;
++ind_done;
}
*s++ = *p++;
}
/* Fill to next tabstop with a tab, if possible */
tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts);
if (todo >= tab_pad)
{
*s++ = TAB;
todo -= tab_pad;
}
p = skipwhite(p);
}
while (todo >= (int)curbuf->b_p_ts)
{
*s++ = TAB;
todo -= (int)curbuf->b_p_ts;
}
}
while (todo > 0)
{
*s++ = ' ';
--todo;
}
mch_memmove(s, p, (size_t)line_len);
/* Replace the line (unless undo fails). */
if (!(flags & SIN_UNDO) || u_savesub(curwin->w_cursor.lnum) == OK)
{
ml_replace(curwin->w_cursor.lnum, newline, FALSE);
if (flags & SIN_CHANGED)
changed_bytes(curwin->w_cursor.lnum, 0);
/* Correct saved cursor position if it's after the indent. */
if (saved_cursor.lnum == curwin->w_cursor.lnum
&& saved_cursor.col >= (colnr_T)(p - oldline))
saved_cursor.col += ind_len - (colnr_T)(p - oldline);
retval = TRUE;
}
else
vim_free(newline);
curwin->w_cursor.col = ind_len;
return retval;
}
/*
* Copy the indent from ptr to the current line (and fill to size)
* Leaves the cursor on the first non-blank in the line.
* Returns TRUE if the line was changed.
*/
static int
copy_indent(size, src)
int size;
char_u *src;
{
char_u *p = NULL;
char_u *line = NULL;
char_u *s;
int todo;
int ind_len;
int line_len = 0;
int tab_pad;
int ind_done;
int round;
/* Round 1: compute the number of characters needed for the indent
* Round 2: copy the characters. */
for (round = 1; round <= 2; ++round)
{
todo = size;
ind_len = 0;
ind_done = 0;
s = src;
/* Count/copy the usable portion of the source line */
while (todo > 0 && vim_iswhite(*s))
{
if (*s == TAB)
{
tab_pad = (int)curbuf->b_p_ts
- (ind_done % (int)curbuf->b_p_ts);
/* Stop if this tab will overshoot the target */
if (todo < tab_pad)
break;
todo -= tab_pad;
ind_done += tab_pad;
}
else
{
--todo;
++ind_done;
}
++ind_len;
if (p != NULL)
*p++ = *s;
++s;
}
/* Fill to next tabstop with a tab, if possible */
tab_pad = (int)curbuf->b_p_ts - (ind_done % (int)curbuf->b_p_ts);
if (todo >= tab_pad && !curbuf->b_p_et)
{
todo -= tab_pad;
++ind_len;
if (p != NULL)
*p++ = TAB;
}
/* Add tabs required for indent */
while (todo >= (int)curbuf->b_p_ts && !curbuf->b_p_et)
{
todo -= (int)curbuf->b_p_ts;
++ind_len;
if (p != NULL)
*p++ = TAB;
}
/* Count/add spaces required for indent */
while (todo > 0)
{
--todo;
++ind_len;
if (p != NULL)
*p++ = ' ';
}
if (p == NULL)
{
/* Allocate memory for the result: the copied indent, new indent
* and the rest of the line. */
line_len = (int)STRLEN(ml_get_curline()) + 1;
line = alloc(ind_len + line_len);
if (line == NULL)
return FALSE;
p = line;
}
}
/* Append the original line */
mch_memmove(p, ml_get_curline(), (size_t)line_len);
/* Replace the line */
ml_replace(curwin->w_cursor.lnum, line, FALSE);
/* Put the cursor after the indent. */
curwin->w_cursor.col = ind_len;
return TRUE;
}
/*
* Return the indent of the current line after a number. Return -1 if no
* number was found. Used for 'n' in 'formatoptions': numbered list.
* Since a pattern is used it can actually handle more than numbers.
*/
int
get_number_indent(lnum)
linenr_T lnum;
{
colnr_T col;
pos_T pos;
regmmatch_T regmatch;
if (lnum > curbuf->b_ml.ml_line_count)
return -1;
pos.lnum = 0;
regmatch.regprog = vim_regcomp(curbuf->b_p_flp, RE_MAGIC);
if (regmatch.regprog != NULL)
{
regmatch.rmm_ic = FALSE;
regmatch.rmm_maxcol = 0;
if (vim_regexec_multi(®match, curwin, curbuf, lnum,
(colnr_T)0, NULL))
{
pos.lnum = regmatch.endpos[0].lnum + lnum;
pos.col = regmatch.endpos[0].col;
#ifdef FEAT_VIRTUALEDIT
pos.coladd = 0;
#endif
}
vim_free(regmatch.regprog);
}
if (pos.lnum == 0 || *ml_get_pos(&pos) == NUL)
return -1;
getvcol(curwin, &pos, &col, NULL, NULL);
return (int)col;
}
#if defined(FEAT_CINDENT) || defined(FEAT_SMARTINDENT)
static int cin_is_cinword __ARGS((char_u *line));
/*
* Return TRUE if the string "line" starts with a word from 'cinwords'.
*/
static int
cin_is_cinword(line)
char_u *line;
{
char_u *cinw;
char_u *cinw_buf;
int cinw_len;
int retval = FALSE;
int len;
cinw_len = (int)STRLEN(curbuf->b_p_cinw) + 1;
cinw_buf = alloc((unsigned)cinw_len);
if (cinw_buf != NULL)
{
line = skipwhite(line);
for (cinw = curbuf->b_p_cinw; *cinw; )
{
len = copy_option_part(&cinw, cinw_buf, cinw_len, ",");
if (STRNCMP(line, cinw_buf, len) == 0
&& (!vim_iswordc(line[len]) || !vim_iswordc(line[len - 1])))
{
retval = TRUE;
break;
}
}
vim_free(cinw_buf);
}
return retval;
}
#endif
/*
* open_line: Add a new line below or above the current line.
*
* For VREPLACE mode, we only add a new line when we get to the end of the
* file, otherwise we just start replacing the next line.
*
* Caller must take care of undo. Since VREPLACE may affect any number of
* lines however, it may call u_save_cursor() again when starting to change a
* new line.
* "flags": OPENLINE_DELSPACES delete spaces after cursor
* OPENLINE_DO_COM format comments
* OPENLINE_KEEPTRAIL keep trailing spaces
* OPENLINE_MARKFIX adjust mark positions after the line break
*
* Return TRUE for success, FALSE for failure
*/
int
open_line(dir, flags, old_indent)
int dir; /* FORWARD or BACKWARD */
int flags;
int old_indent; /* indent for after ^^D in Insert mode */
{
char_u *saved_line; /* copy of the original line */
char_u *next_line = NULL; /* copy of the next line */
char_u *p_extra = NULL; /* what goes to next line */
int less_cols = 0; /* less columns for mark in new line */
int less_cols_off = 0; /* columns to skip for mark adjust */
pos_T old_cursor; /* old cursor position */
int newcol = 0; /* new cursor column */
int newindent = 0; /* auto-indent of the new line */
int n;
int trunc_line = FALSE; /* truncate current line afterwards */
int retval = FALSE; /* return value, default is FAIL */
#ifdef FEAT_COMMENTS
int extra_len = 0; /* length of p_extra string */
int lead_len; /* length of comment leader */
char_u *lead_flags; /* position in 'comments' for comment leader */
char_u *leader = NULL; /* copy of comment leader */
#endif
char_u *allocated = NULL; /* allocated memory */
#if defined(FEAT_SMARTINDENT) || defined(FEAT_VREPLACE) || defined(FEAT_LISP) \
|| defined(FEAT_CINDENT) || defined(FEAT_COMMENTS)
char_u *p;
#endif
int saved_char = NUL; /* init for GCC */
#if defined(FEAT_SMARTINDENT) || defined(FEAT_COMMENTS)
pos_T *pos;
#endif
#ifdef FEAT_SMARTINDENT
int do_si = (!p_paste && curbuf->b_p_si
# ifdef FEAT_CINDENT
&& !curbuf->b_p_cin
# endif
);
int no_si = FALSE; /* reset did_si afterwards */
int first_char = NUL; /* init for GCC */
#endif
#if defined(FEAT_VREPLACE) && (defined(FEAT_LISP) || defined(FEAT_CINDENT))
int vreplace_mode;
#endif
int did_append; /* appended a new line */
int saved_pi = curbuf->b_p_pi; /* copy of preserveindent setting */
/*
* make a copy of the current line so we can mess with it
*/
saved_line = vim_strsave(ml_get_curline());
if (saved_line == NULL) /* out of memory! */
return FALSE;
#ifdef FEAT_VREPLACE
if (State & VREPLACE_FLAG)
{
/*
* With VREPLACE we make a copy of the next line, which we will be
* starting to replace. First make the new line empty and let vim play
* with the indenting and comment leader to its heart's content. Then
* we grab what it ended up putting on the new line, put back the
* original line, and call ins_char() to put each new character onto
* the line, replacing what was there before and pushing the right
* stuff onto the replace stack. -- webb.
*/
if (curwin->w_cursor.lnum < orig_line_count)
next_line = vim_strsave(ml_get(curwin->w_cursor.lnum + 1));
else
next_line = vim_strsave((char_u *)"");
if (next_line == NULL) /* out of memory! */
goto theend;
/*
* In VREPLACE mode, a NL replaces the rest of the line, and starts
* replacing the next line, so push all of the characters left on the
* line onto the replace stack. We'll push any other characters that
* might be replaced at the start of the next line (due to autoindent
* etc) a bit later.
*/
replace_push(NUL); /* Call twice because BS over NL expects it */
replace_push(NUL);
p = saved_line + curwin->w_cursor.col;
while (*p != NUL)
{
#ifdef FEAT_MBYTE
if (has_mbyte)
p += replace_push_mb(p);
else
#endif
replace_push(*p++);
}
saved_line[curwin->w_cursor.col] = NUL;
}
#endif
if ((State & INSERT)
#ifdef FEAT_VREPLACE
&& !(State & VREPLACE_FLAG)
#endif
)
{
p_extra = saved_line + curwin->w_cursor.col;
#ifdef FEAT_SMARTINDENT
if (do_si) /* need first char after new line break */
{
p = skipwhite(p_extra);
first_char = *p;
}
#endif
#ifdef FEAT_COMMENTS
extra_len = (int)STRLEN(p_extra);
#endif
saved_char = *p_extra;
*p_extra = NUL;
}
u_clearline(); /* cannot do "U" command when adding lines */
#ifdef FEAT_SMARTINDENT
did_si = FALSE;
#endif
ai_col = 0;
/*
* If we just did an auto-indent, then we didn't type anything on
* the prior line, and it should be truncated. Do this even if 'ai' is not
* set because automatically inserting a comment leader also sets did_ai.
*/
if (dir == FORWARD && did_ai)
trunc_line = TRUE;
/*
* If 'autoindent' and/or 'smartindent' is set, try to figure out what
* indent to use for the new line.
*/
if (curbuf->b_p_ai
#ifdef FEAT_SMARTINDENT
|| do_si
#endif
)
{
/*
* count white space on current line
*/
newindent = get_indent_str(saved_line, (int)curbuf->b_p_ts);
if (newindent == 0)
newindent = old_indent; /* for ^^D command in insert mode */
#ifdef FEAT_SMARTINDENT
/*
* Do smart indenting.
* In insert/replace mode (only when dir == FORWARD)
* we may move some text to the next line. If it starts with '{'
* don't add an indent. Fixes inserting a NL before '{' in line
* "if (condition) {"
*/
if (!trunc_line && do_si && *saved_line != NUL
&& (p_extra == NULL || first_char != '{'))
{
char_u *ptr;
char_u last_char;
old_cursor = curwin->w_cursor;
ptr = saved_line;
# ifdef FEAT_COMMENTS
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE);
else
lead_len = 0;
# endif
if (dir == FORWARD)
{
/*
* Skip preprocessor directives, unless they are
* recognised as comments.
*/
if (
# ifdef FEAT_COMMENTS
lead_len == 0 &&
# endif
ptr[0] == '#')
{
while (ptr[0] == '#' && curwin->w_cursor.lnum > 1)
ptr = ml_get(--curwin->w_cursor.lnum);
newindent = get_indent();
}
# ifdef FEAT_COMMENTS
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(ptr, NULL, FALSE);
else
lead_len = 0;
if (lead_len > 0)
{
/*
* This case gets the following right:
* \*
* * A comment (read '\' as '/').
* *\
* #define IN_THE_WAY
* This should line up here;
*/
p = skipwhite(ptr);
if (p[0] == '/' && p[1] == '*')
p++;
if (p[0] == '*')
{
for (p++; *p; p++)
{
if (p[0] == '/' && p[-1] == '*')
{
/*
* End of C comment, indent should line up
* with the line containing the start of
* the comment
*/
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, NUL)) != NULL)
{
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
}
}
}
}
}
else /* Not a comment line */
# endif
{
/* Find last non-blank in line */
p = ptr + STRLEN(ptr) - 1;
while (p > ptr && vim_iswhite(*p))
--p;
last_char = *p;
/*
* find the character just before the '{' or ';'
*/
if (last_char == '{' || last_char == ';')
{
if (p > ptr)
--p;
while (p > ptr && vim_iswhite(*p))
--p;
}
/*
* Try to catch lines that are split over multiple
* lines. eg:
* if (condition &&
* condition) {
* Should line up here!
* }
*/
if (*p == ')')
{
curwin->w_cursor.col = (colnr_T)(p - ptr);
if ((pos = findmatch(NULL, '(')) != NULL)
{
curwin->w_cursor.lnum = pos->lnum;
newindent = get_indent();
ptr = ml_get_curline();
}
}
/*
* If last character is '{' do indent, without
* checking for "if" and the like.
*/
if (last_char == '{')
{
did_si = TRUE; /* do indent */
no_si = TRUE; /* don't delete it when '{' typed */
}
/*
* Look for "if" and the like, use 'cinwords'.
* Don't do this if the previous line ended in ';' or
* '}'.
*/
else if (last_char != ';' && last_char != '}'
&& cin_is_cinword(ptr))
did_si = TRUE;
}
}
else /* dir == BACKWARD */
{
/*
* Skip preprocessor directives, unless they are
* recognised as comments.
*/
if (
# ifdef FEAT_COMMENTS
lead_len == 0 &&
# endif
ptr[0] == '#')
{
int was_backslashed = FALSE;
while ((ptr[0] == '#' || was_backslashed) &&
curwin->w_cursor.lnum < curbuf->b_ml.ml_line_count)
{
if (*ptr && ptr[STRLEN(ptr) - 1] == '\\')
was_backslashed = TRUE;
else
was_backslashed = FALSE;
ptr = ml_get(++curwin->w_cursor.lnum);
}
if (was_backslashed)
newindent = 0; /* Got to end of file */
else
newindent = get_indent();
}
p = skipwhite(ptr);
if (*p == '}') /* if line starts with '}': do indent */
did_si = TRUE;
else /* can delete indent when '{' typed */
can_si_back = TRUE;
}
curwin->w_cursor = old_cursor;
}
if (do_si)
can_si = TRUE;
#endif /* FEAT_SMARTINDENT */
did_ai = TRUE;
}
#ifdef FEAT_COMMENTS
/*
* Find out if the current line starts with a comment leader.
* This may then be inserted in front of the new line.
*/
end_comment_pending = NUL;
if (flags & OPENLINE_DO_COM)
lead_len = get_leader_len(saved_line, &lead_flags, dir == BACKWARD);
else
lead_len = 0;
if (lead_len > 0)
{
char_u *lead_repl = NULL; /* replaces comment leader */
int lead_repl_len = 0; /* length of *lead_repl */
char_u lead_middle[COM_MAX_LEN]; /* middle-comment string */
char_u lead_end[COM_MAX_LEN]; /* end-comment string */
char_u *comment_end = NULL; /* where lead_end has been found */
int extra_space = FALSE; /* append extra space */
int current_flag;
int require_blank = FALSE; /* requires blank after middle */
char_u *p2;
/*
* If the comment leader has the start, middle or end flag, it may not
* be used or may be replaced with the middle leader.
*/
for (p = lead_flags; *p && *p != ':'; ++p)
{
if (*p == COM_BLANK)
{
require_blank = TRUE;
continue;
}
if (*p == COM_START || *p == COM_MIDDLE)
{
current_flag = *p;
if (*p == COM_START)
{
/*
* Doing "O" on a start of comment does not insert leader.
*/
if (dir == BACKWARD)
{
lead_len = 0;
break;
}
/* find start of middle part */
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
require_blank = FALSE;
}
/*
* Isolate the strings of the middle and end leader.
*/
while (*p && p[-1] != ':') /* find end of middle flags */
{
if (*p == COM_BLANK)
require_blank = TRUE;
++p;
}
(void)copy_option_part(&p, lead_middle, COM_MAX_LEN, ",");
while (*p && p[-1] != ':') /* find end of end flags */
{
/* Check whether we allow automatic ending of comments */
if (*p == COM_AUTO_END)
end_comment_pending = -1; /* means we want to set it */
++p;
}
n = copy_option_part(&p, lead_end, COM_MAX_LEN, ",");
if (end_comment_pending == -1) /* we can set it now */
end_comment_pending = lead_end[n - 1];
/*
* If the end of the comment is in the same line, don't use
* the comment leader.
*/
if (dir == FORWARD)
{
for (p = saved_line + lead_len; *p; ++p)
if (STRNCMP(p, lead_end, n) == 0)
{
comment_end = p;
lead_len = 0;
break;
}
}
/*
* Doing "o" on a start of comment inserts the middle leader.
*/
if (lead_len > 0)
{
if (current_flag == COM_START)
{
lead_repl = lead_middle;
lead_repl_len = (int)STRLEN(lead_middle);
}
/*
* If we have hit RETURN immediately after the start
* comment leader, then put a space after the middle
* comment leader on the next line.
*/
if (!vim_iswhite(saved_line[lead_len - 1])
&& ((p_extra != NULL
&& (int)curwin->w_cursor.col == lead_len)
|| (p_extra == NULL
&& saved_line[lead_len] == NUL)
|| require_blank))
extra_space = TRUE;
}
break;
}
if (*p == COM_END)
{
/*
* Doing "o" on the end of a comment does not insert leader.
* Remember where the end is, might want to use it to find the
* start (for C-comments).
*/
if (dir == FORWARD)
{
comment_end = skipwhite(saved_line);
lead_len = 0;
break;
}
/*
* Doing "O" on the end of a comment inserts the middle leader.
* Find the string for the middle leader, searching backwards.
*/
while (p > curbuf->b_p_com && *p != ',')
--p;
for (lead_repl = p; lead_repl > curbuf->b_p_com
&& lead_repl[-1] != ':'; --lead_repl)
;
lead_repl_len = (int)(p - lead_repl);
/* We can probably always add an extra space when doing "O" on
* the comment-end */
extra_space = TRUE;
/* Check whether we allow automatic ending of comments */
for (p2 = p; *p2 && *p2 != ':'; p2++)
{
if (*p2 == COM_AUTO_END)
end_comment_pending = -1; /* means we want to set it */
}
if (end_comment_pending == -1)
{
/* Find last character in end-comment string */
while (*p2 && *p2 != ',')
p2++;
end_comment_pending = p2[-1];
}
break;
}
if (*p == COM_FIRST)
{
/*
* Comment leader for first line only: Don't repeat leader
* when using "O", blank out leader when using "o".
*/
if (dir == BACKWARD)
lead_len = 0;
else