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patch 8.0.0643: when a pattern search is slow Vim becomes unusable

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Problem:    When 'hlsearch' is set and matching with the last search pattern
            is very slow, Vim becomes unusable.  Cannot quit search by
            pressing CTRL-C.
Solution:   When the search times out set a flag and don't try again.  Check
            for timeout and CTRL-C in NFA loop that adds states.
This commit is contained in:
Bram Moolenaar
2017-06-17 18:44:21 +02:00
parent 8cf91286ca
commit fbd0b0af68
19 changed files with 124 additions and 68 deletions
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4
src/normal.c
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@@ -4358,7 +4358,7 @@ find_decl(
{
valid = FALSE;
t = searchit(curwin, curbuf, &curwin->w_cursor, FORWARD,
pat, 1L, searchflags, RE_LAST, (linenr_T)0, NULL);
pat, 1L, searchflags, RE_LAST, (linenr_T)0, NULL, NULL);
if (curwin->w_cursor.lnum >= old_pos.lnum)
t = FAIL; /* match after start is failure too */
@@ -6380,7 +6380,7 @@ normal_search(
curwin->w_set_curswant = TRUE;
i = do_search(cap->oap, dir, pat, cap->count1,
opt | SEARCH_OPT | SEARCH_ECHO | SEARCH_MSG, NULL);
opt | SEARCH_OPT | SEARCH_ECHO | SEARCH_MSG, NULL, NULL);
if (i == 0)
clearop(cap->oap);
else