GNU bug report logs - #8989
keymap text property applies beyond the region it is set to

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Package: emacs;

Reported by: Dmitry Kurochkin <dmitry.kurochkin <at> gmail.com>

Date: Sun, 3 Jul 2011 06:27:02 UTC

Severity: normal

Found in version 23.3.1

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

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Report forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#8989; Package emacs. (Sun, 03 Jul 2011 06:27:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Dmitry Kurochkin <dmitry.kurochkin <at> gmail.com>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Sun, 03 Jul 2011 06:27:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Kurochkin <dmitry.kurochkin <at> gmail.com>
To: submit <at> debbugs.gnu.org
Subject: keymap text property applies beyond the region it is set to
Date: Sun, 03 Jul 2011 10:25:57 +0400
Package: emacs
Version: 23.3.1

When keymap text property is set, it changes key binding for one
character after the region it is set to.  The following code
demonstrates the problem:

  (let ((map (make-sparse-keymap)))
    (define-key map (kbd "RET") 'bug)
    (switch-to-buffer "test")
    (insert "123456")
    (put-text-property 1 4 'keymap map)
    (goto-char 4)
    (message "keymap: %s"
             (get-text-property (point) 'keymap)) ; no keymap property here
    (message "key-binding: %s"
             (key-binding (kbd "RET")))) ; but the key binding is changed

Regards,
  Dmitry




Information forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#8989; Package emacs. (Sun, 03 Jul 2011 14:59:01 GMT) Full text and rfc822 format available.

Message #8 received at 8989 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Dmitry Kurochkin <dmitry.kurochkin <at> gmail.com>
Cc: 8989 <at> debbugs.gnu.org
Subject: Re: bug#8989: keymap text property applies beyond the region it is
	set to
Date: Sun, 03 Jul 2011 10:57:51 -0400
tags 8989 +notabug
thanks

> When keymap text property is set, it changes key binding for one
> character after the region it is set to.  The following code
> demonstrates the problem:

No: in your case, the text property covers characters between positions
1 to 4, and point is at position 4 (right in front of the char at
position 4 and right after the char at position 3), i.e. right on the
boundary of the text-property.  When on the boundary, the behavior will
depend on whether the property is sticky or not, so you can control it
by twiddling the "front-advance, read-advance" settings of your overlays
or the rear-non-stick and front-sticky text-properties.


        Stefan




Information forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#8989; Package emacs. (Sun, 03 Jul 2011 21:48:02 GMT) Full text and rfc822 format available.

Message #11 received at 8989 <at> debbugs.gnu.org (full text, mbox):

From: Dmitry Kurochkin <dmitry.kurochkin <at> gmail.com>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 8989 <at> debbugs.gnu.org
Subject: Re: bug#8989: keymap text property applies beyond the region it is
	set to
Date: Mon, 04 Jul 2011 01:47:46 +0400
On Sun, 03 Jul 2011 10:57:51 -0400, Stefan Monnier <monnier <at> iro.umontreal.ca> wrote:
> tags 8989 +notabug
> thanks
> 
> > When keymap text property is set, it changes key binding for one
> > character after the region it is set to.  The following code
> > demonstrates the problem:
> 
> No: in your case, the text property covers characters between positions
> 1 to 4, and point is at position 4 (right in front of the char at
> position 4 and right after the char at position 3), i.e. right on the
> boundary of the text-property.  When on the boundary, the behavior will
> depend on whether the property is sticky or not, so you can control it
> by twiddling the "front-advance, read-advance" settings of your overlays
> or the rear-non-stick and front-sticky text-properties.
> 

Stefan, thank you for the explanation and sorry for a false but report!

Regards,
  Dmitry

> 
>         Stefan




bug closed, send any further explanations to 8989 <at> debbugs.gnu.org and Dmitry Kurochkin <dmitry.kurochkin <at> gmail.com> Request was from Chong Yidong <cyd <at> stupidchicken.com> to control <at> debbugs.gnu.org. (Sat, 20 Aug 2011 22:48:02 GMT) Full text and rfc822 format available.

bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Sun, 18 Sep 2011 11:24:06 GMT) Full text and rfc822 format available.

This bug report was last modified 13 years and 334 days ago.

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