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bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens ar
From: |
Lars Ingebrigtsen |
Subject: |
bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced |
Date: |
Sun, 28 Jul 2019 22:07:49 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux) |
Mohammed Sadik <sadiq@sadiqpk.org> writes:
> When pressing Backspace key, with electric-pair-mode enabled,
> it unconditionally deletes the following char, if its the matching pair.
> Ideally, it may better check if it breaks the equilibrium of
> braces/quotes.
>
> Eg: code: (char-before (point))
> |_ point location
> If my point (cursor) is just before the last paren (the cursor is
> blinking on the last paren), and I press backspace until the beginning
> of "point"[0], and then one char back[1], it just deletes the bracket,
> without checking if the parens are balanced.
>
> code:
> [0] (char-before ()
> |_point location
> [1] (char-before
> |_ point location
>
> This could be the case of quotes, braces, etc.
(I'm going through old Emacs bug reports that haven't received any
response.)
Or a simpler example:
(foo ()
If you put point after the next-to-last character, then hitting DEL will
delete the last pair:
(foo
But... I don't think this is a bug? electric-pair-mode doesn't promise
to keep things balanced globally, but delete the matching pair if you
delete an opening parenthesis? I think.
Does that tally with what everybody else would expect?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
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Lars Ingebrigtsen <=