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bug#37455: 27.0.50; insert-behind-hooks and insert-in-front-hooks in tex
From: |
'Ihor Radchenko' |
Subject: |
bug#37455: 27.0.50; insert-behind-hooks and insert-in-front-hooks in text properties do nothing when font-lock-mode is on |
Date: |
Thu, 19 Sep 2019 08:48:57 +0800 |
Expected behaviour:
According to the manual, adding insert-in-front-hooks or
insert-behind-hooks text properties should trigger the functions listed
in the hooks when the text is inserted in front/behind the text.
Observed behaviour:
The functions never run unless I type very fast (with my own config) or
when font-lock-mode is enabled.
Steps to reproduce (the font-lock part):
1. emacs -Q
2. Insert the following elisp into scratch (the code is from
https://www.reddit.com/r/emacs/comments/d5waor/how_to_use_modification_hooks_in_text_properties/):
(defun test-property ()
(put-text-property (point) (mark) 'insert-behind-hooks
(list (lambda (beg end)
(message "before %d %d" beg end))))
(put-text-property (point) (mark) 'insert-in-front-hooks
(list (lambda (beg end)
(message "in front %d %d" beg end)))))
1. Select the region containing all the text in the scratch buffer
2. M-: (test-property) RET
3. Try to type anything
4. No message is shown
5. Disable font-lock-mode
6. Try to type anything
7. The message is shown
Regards,
Ihor
--
Ihor Radchenko,
PhD,
Center for Advancing Materials Performance from the Nanoscale (CAMP-nano)
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong
University, Xi'an, China
Email: yantar92@gmail.com, ihor_radchenko@alumni.sutd.edu.sg
- bug#37455: 27.0.50; insert-behind-hooks and insert-in-front-hooks in text properties do nothing when font-lock-mode is on,
'Ihor Radchenko' <=