From fda3729a064d6466cec6ac83dd1bfcc437ea4cc9 Mon Sep 17 00:00:00 2001 From: Bram Moolenaar Date: Wed, 5 Nov 2014 14:27:36 +0100 Subject: updated for version 7.4.497 Problem: With some regexp patterns the NFA engine uses many states and becomes very slow. To the user it looks like Vim freezes. Solution: When the number of states reaches a limit fall back to the old engine. (Christian Brabandt) --- runtime/doc/options.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'runtime') diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt index b50711c69..534ef449f 100644 --- a/runtime/doc/options.txt +++ b/runtime/doc/options.txt @@ -5626,6 +5626,10 @@ A jump table for the options with a short description can be found at |Q_op|. Note that when using the NFA engine and the pattern contains something that is not supported the pattern will not match. This is only useful for debugging the regexp engine. + Using automatic selection enables Vim to switch the engine, if the + default engine becomes too costly. E.g., when the NFA engine uses too + many states. This should prevent Vim from hanging on a combination of + a complex pattern with long text. *'relativenumber'* *'rnu'* *'norelativenumber'* *'nornu'* 'relativenumber' 'rnu' boolean (default off) -- cgit v1.2.1