Re: address@hidden: Font Lock on-the-fly misfontification in C++]

[Stefan Monnier]

>> 3.  Append a space to the fourth commented line.  Bug: fontification of Foo,
>> bar, Snafu and snafu is removed from that line.

> The problem is that after a textual change, the changed line gets
> fontified as an atomic entity, i.e. yanked out of its context.  The

If you placed a font-lock-multiline property on the whole thing, font-lock
would know not to yank that one line out of its context.

> solution is to determine the bounds of the region to fontify by analysing
> the surrounding text syntactically.

Presumably, at the moment when Emacs fontified it correctly, it knew the
corresponding bounds, so it could have added the font-lock-multiline
property at that time, thus avoiding the need to re-determine those bounds
later when refontifying.


        Stefan