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CC Mode: Stop Font Lock forcing fontification from BOL. Fixes debbugs#19669.

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cc-mode.el (c-font-lock-init): Setq font-lock-extend-region-functions to
nil.
This commit is contained in:
Alan Mackenzie 2015-02-01 21:20:35 +00:00
parent ab9252a01a
commit b31d359d18
2 changed files with 16 additions and 0 deletions
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8
lisp/ChangeLog
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@ -1,3 +1,11 @@
2015-02-01 Alan Mackenzie <acm@muc.de>
CC Mode: Stop Font Lock forcing fontification from BOL. Fixes
debbugs#19669.
* progmodes/cc-mode.el (c-font-lock-init): Setq
font-lock-extend-region-functions to nil.
2015-04-06 Fabián Ezequiel Gallina <fgallina@gnu.org>
python.el: Do not break IPython magic completions. (Bug#19736)

8
lisp/progmodes/cc-mode.el
View file

@ -1302,6 +1302,14 @@ This function is called from `c-common-init', once per mode initialization."
(font-lock-mark-block-function
. c-mark-function)))
;; Prevent `font-lock-default-fontify-region' extending the region it will
;; fontify to whole lines by removing `font-lock-extend-region-whole-lines'
;; (and, coincidentally, `font-lock-extend-region-multiline' (which we do
;; not need)) from `font-lock-extend-region-functions'. (Emacs only). This
;; fixes Emacs bug #19669.
(when (boundp 'font-lock-extend-region-functions)
(setq font-lock-extend-region-functions nil))
(make-local-variable 'font-lock-fontify-region-function)
(setq font-lock-fontify-region-function 'c-font-lock-fontify-region)