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patch 8.2.3471: crash when using CTRL-T after an empty search pattern

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Problem:    Crash when using CTRL-T after an empty search pattern.
Solution:   Bail out when there is no previous search pattern. (closes #8953)
This commit is contained in:
Bram Moolenaar
2021-10-04 19:47:35 +01:00
parent a684a68409
commit d8d957de86
3 changed files with 19 additions and 1 deletions
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8
src/ex_getln.c
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@@ -612,7 +612,8 @@ may_adjust_incsearch_highlighting(
// NOTE: must call restore_last_search_pattern() before returning!
save_last_search_pattern();
if (!do_incsearch_highlighting(firstc, &search_delim, is_state, &skiplen, &patlen))
if (!do_incsearch_highlighting(firstc, &search_delim, is_state,
&skiplen, &patlen))
{
restore_last_search_pattern();
return OK;
@@ -626,6 +627,11 @@ may_adjust_incsearch_highlighting(
if (search_delim == ccline.cmdbuff[skiplen])
{
pat = last_search_pattern();
if (pat == NULL)
{
restore_last_search_pattern();
return FAIL;
}
skiplen = 0;
patlen = (int)STRLEN(pat);
}