patch 8.0.0643: when a pattern search is slow Vim becomes unusable commit https://github.com/vim/vim/commit/fbd0b0af6800f6ff89857863d6a07ea03f09ff6c Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 17 18:44:21 2017 +0200 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.

/* XPM */
static char * vim16x16[] = {
"16 16 8 1",
" 	c None",
".	c #000000",
"+	c #000080",
"@	c #008000",
"#	c #00FF00",
"$	c #808080",
"%	c #C0C0C0",
"&	c #FFFFFF",
"  .....#. ....  ",
" .&&&&&.@.&&&&. ",
" .%%%%%$..%%%%$.",
"  .%%%$.@.&%%$. ",
"  .%%%$..&%%$.  ",
"  .%%%$.&%%$..  ",
" #.%%%$&%%$.@@. ",
"#@.%%%&%%$.@@@@.",
".@.%%%%%..@@@@+ ",
" ..%%%%.%...@.  ",
"  .%%%%...%%.%. ",
"  .%%%.%%.%%%%%.",
"  .%%$..%.%.%.%.",
"  .%$.@.%.%.%.%.",
"   .. .%%.%.%.%.",
"       .. . . . "};