GNU bug report logs - #16981
24.3.50; electric-pair-delete-adjacent-pairs broken in c-mode, python-mode, maybe-others

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From: joaotavora <at> gmail.com (João Távora)
To: 16981 <at> debbugs.gnu.org
Subject: bug#16981: 24.3.50; electric-pair-delete-adjacent-pairs broken in c-mode, python-mode, maybe-others
Date: Mon, 10 Mar 2014 19:47:39 +0000

This variable, t by default, acts when `electric-pair-mode' is enabled.

It doesn't work in c-mode, python-mode and maybe other modes in
emacs. In also doesn't work in other modes outside of emacs, such as
markdown-mode.el [1]

All these modes rebind the backspace key to a command that does some
mode-specific action, then calls `backward-delete-char-untabify'.

elec-pair.el does mostly the same through remapping in its
`electric-pair-mode-map' but this binding is overriden by the
major-mode's.

elec-pair.el remaps two other commands similarly. Here's the value of
electric-pair-mode-map

    (keymap
     (remap keymap
            (delete-backward-char . electric-pair-backward-delete-char)
            (backward-delete-char . electric-pair-backward-delete-char)
            (backward-delete-char-untabify
               . electric-pair-backward-delete-char-untabify)))


Perhaps a hook in `backward-delete-char' is in order. Or the other major
modes can find other ways to overload the backspace key.

Thanks,
João

[1]: http://jblevins.org/git/markdown-mode.git/plain/markdown-mode.el

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