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| From: | Stefan Monnier |
| Subject: | bug#14886: Fwd: bug#14886: Fwd: A significant slowdown calling font-lock-fontify-buffer from a hook |
| Date: | Wed, 24 Jul 2013 21:24:37 -0400 |
| User-agent: | Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) |
> - Font-lock-fontify-buffer should not be called from a hook.
Font-lock-fontify-buffer is definitely a bad function, since it has
2 different meanings (either "make sure the buffer is fontified" or
"please refontify the buffer"). It should be replaced by two different
functions:
- font-lock-ensure-fontification, which makes sure fontification is
applied to a particular region (e.g. for use by things like
htmlfontify or ps-print).
- font-lock-flush-fontification which indicates that the fontification
for a particular region should be considered out-of-date (e.g. for use
after calling font-lock-add/remove-keywords).
I don't see why any of those 3 functions shouldn't be called from
a hook, tho.
> - Errors during fontification should be visible. That would have made
> clear that there was something wrong with the 24.3 use case.
Silent errors are bugs. Please try and find what happens with
the error message.
Stefan
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