commit fbd0b0af6800f6ff89857863d6a07ea03f09ff6c
author Bram Moolenaar <Bram@vim.org> Sat Jun 17 18:44:21 2017 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Jun 17 18:44:21 2017 +0200
tree d970232ff584511e30efcfe2f7ea5eefb9e9f8d4
parent 8cf91286ca46a501d24e4b7d631b193256782c88

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

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.

src/spell.c

diff --git a/src/spell.c b/src/spell.c
index 118e78b..0eb8763 100644
--- a/src/spell.c
+++ b/src/spell.c
@@ -3675,7 +3675,7 @@
     curwin->w_cursor.lnum = 0;
     while (!got_int)
     {
-	if (do_search(NULL, '/', frompat, 1L, SEARCH_KEEP, NULL) == 0
+	if (do_search(NULL, '/', frompat, 1L, SEARCH_KEEP, NULL, NULL) == 0
 						   || u_save_cursor() == FAIL)
 	    break;