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bug#29159: 27.0.50; Hang in HTML/CSS code
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From: |
Stefan Monnier |
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Subject: |
bug#29159: 27.0.50; Hang in HTML/CSS code |
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Date: |
Sat, 25 Nov 2017 21:17:20 -0500 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
> In this particular example, `mhtml--extend-font-lock-region' wants to
> leave `font-lock-beg' at 40 while `font-lock-extend-region-multiline'
> wants it at 39, resulting in an endless back and forth.
Could you give some details?
Functions on font-lock-extend-region-functions should *never* shrink
a region (since that risks inf-looping, obviously). After all, it's
called "...-extend-...", right?
So if font-lock-extend-region-multiline puts beg at 39, it's incorrect
for mhtml--extend-font-lock-region to move it back to 40.
Stefan