Re: extremely slow font-lock-mode

[Kenichi Handa]

In article <address@hidden>, Martin Pohlack <address@hidden> writes:

> [1  <text/plain; ISO-8859-15 (7bit)>]
> martin rudalics wrote:
>>> I'm experiencing very slow syntax highlighting with emacs-23.0.60
>>> (GTK+ Version 2.12.1)a.
>>> 
>>> Simply scrolling in source files takes incredibly long (~ 1 second for
>>> scolling one line backwards).  This is an a dual-core 2 GHZ machine

I recentry modified handle_auto_composed_prop in
emacs-unicode-2.  There's a possibility that it is the
culprit.  Please try to turn off auto-composition-mode.

>   Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit \
>     mask of 0x00 (Unhalted core cycles) count 240000
>   samples  %        symbol name
>   48798    32.2244  lookup_char_property
>   37434    24.7200  next_interval
>   24605    16.2482  get_property_and_range

Hmmm, in handle_auto_composed_prop, get_property_and_range
is called twice, and such a file as entry-ia32-ux.S causes
freguent face change which leads to lots of calling
handle_auto_composed_prop.

---
Kenichi Handa
address@hidden