Re: Regression in 22.2 jit-lock?

[Stefan Monnier <monnier@iro.umontreal.ca>]

>> I've prepared a minimal example to reproduce the different behaviour:
>> 
>> 1. Open attached file test.sh with "emacs -Q"
>> 2. Remove one of the double quotes inside function foo()
>> 
>> While in 22.1 fontification of function bar() is delayed by 0.5
>> seconds, namely the default value of jit-lock-context-time, it is
>> immediate in 22.2.
>> 
>> #!/bin/bash
>> 
>> foo() {
>> echo "it's a test"
>> }
>> 
>> bar() {
>> cat <<-EOF >baz.el
>> ;;; baz.el
>> (require 'quux)
>> EOF
>> }

> Thanks for spotting this.  The bug was introduced by the following
> change.  Stefan?

> 2007-07-23  Stefan Monnier  <monnier@iro.umontreal.ca>

> 	* progmodes/sh-script.el (sh-font-lock-backslash-quote)
> 	(sh-font-lock-flush-syntax-ppss-cache): New funs.
> 	(sh-font-lock-syntactic-keywords): Use them to distinguish the
> 	different possible cases for \'.
> 	(sh-font-lock-paren): Mark the relevant text with font-lock-multiline.

Hmm... so the "relevant text" marked with font-lock-multiline is so
large that it causes sluggishness...  Not sure what to do about it,


        Stefan