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updated for version 7.3.625

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Problem:    "gn" does not handle zero-width matches correctly.
Solution:   Handle zero-width patterns specially. (Christian Brabandt)
This commit is contained in:
Bram Moolenaar
2012-08-08 15:27:57 +02:00
parent 04b2751899
commit ba6ba36fa2
2 changed files with 34 additions and 8 deletions
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40
src/search.c
View File

@@ -4546,6 +4546,9 @@ current_search(count, forward)
int visual_active = FALSE;
int flags = 0;
pos_T save_VIsual;
regmmatch_T regmatch;
int nmatched = 0;
int zerowidth = FALSE;
/* wrapping should not occur */
@@ -4580,6 +4583,24 @@ current_search(count, forward)
else
orig_pos = pos = start_pos = curwin->w_cursor;
/*
* Check for zero-width pattern.
*/
if (search_regcomp(spats[last_idx].pat, RE_SEARCH, RE_SEARCH,
((SEARCH_HIS + SEARCH_KEEP)), &regmatch) == FAIL)
return FAIL;
/* Zero-width pattern should match somewhere, then we can check if start
* and end are in the same position. */
nmatched = vim_regexec_multi(&regmatch, curwin, curbuf,
curwin->w_cursor.lnum, (colnr_T)0, NULL);
if (called_emsg)
return FAIL;
if (nmatched && regmatch.startpos[0].lnum == regmatch.endpos[0].lnum
&& regmatch.endpos[0].col == regmatch.startpos[0].col)
zerowidth = TRUE;
vim_free(regmatch.regprog);
/*
* The trick is to first search backwards and then search forward again,
* so that a match at the current cursor position will be correctly
@@ -4587,17 +4608,18 @@ current_search(count, forward)
*/
for (i = 0; i < 2; i++)
{
if (i && count == 1)
flags = SEARCH_START;
if (forward)
dir = i;
else
dir = !i;
flags = 0;
if (!dir && !zerowidth)
flags = SEARCH_END;
result = searchit(curwin, curbuf, &pos, (dir ? FORWARD : BACKWARD),
spats[last_idx].pat, (long) (i ? count : 1),
SEARCH_KEEP | flags | (dir ? 0 : SEARCH_END),
RE_SEARCH, 0, NULL);
SEARCH_KEEP | flags, RE_SEARCH, 0, NULL);
/* First search may fail, but then start searching from the
* beginning of the file (cursor might be on the search match)
@@ -4629,10 +4651,12 @@ current_search(count, forward)
}
start_pos = pos;
flags = (forward ? SEARCH_END : 0);
flags = forward ? SEARCH_END : 0;
/* move to match */
result = searchit(curwin, curbuf, &pos, (forward ? FORWARD : BACKWARD),
/* move to match, except for zero-width matches, in which case, we are
* already on the next match */
if (!zerowidth)
result = searchit(curwin, curbuf, &pos, (forward ? FORWARD : BACKWARD),
spats[last_idx].pat, 0L, flags | SEARCH_KEEP, RE_SEARCH, 0, NULL);
if (!VIsual_active)

2
src/version.c
View File

@@ -714,6 +714,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
625,
/**/
624,
/**/