* bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced
@ 2016-04-16 1:38 Mohammed Sadik
2019-07-28 20:07 ` Lars Ingebrigtsen
0 siblings, 1 reply; 4+ messages in thread
From: Mohammed Sadik @ 2016-04-16 1:38 UTC (permalink / raw
To: 23298
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.
In GNU Emacs 25.0.92.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.18.9)
of 2016-04-13 built on fedora.localdomain
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^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced
2016-04-16 1:38 bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced Mohammed Sadik
@ 2019-07-28 20:07 ` Lars Ingebrigtsen
2020-08-12 2:52 ` Stefan Kangas
0 siblings, 1 reply; 4+ messages in thread
From: Lars Ingebrigtsen @ 2019-07-28 20:07 UTC (permalink / raw
To: Mohammed Sadik; +Cc: 23298
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
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced
2019-07-28 20:07 ` Lars Ingebrigtsen
@ 2020-08-12 2:52 ` Stefan Kangas
2020-08-14 9:37 ` Andrii Kolomoiets
0 siblings, 1 reply; 4+ messages in thread
From: Stefan Kangas @ 2020-08-12 2:52 UTC (permalink / raw
To: Lars Ingebrigtsen; +Cc: Mohammed Sadik, 23298
Lars Ingebrigtsen <larsi@gnus.org> writes:
> 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?
Do we have any electric-pair-mode users who could comment on this?
Best regards,
Stefan Kangas
^ permalink raw reply [flat|nested] 4+ messages in thread
* bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced
2020-08-12 2:52 ` Stefan Kangas
@ 2020-08-14 9:37 ` Andrii Kolomoiets
0 siblings, 0 replies; 4+ messages in thread
From: Andrii Kolomoiets @ 2020-08-14 9:37 UTC (permalink / raw
To: Stefan Kangas; +Cc: Lars Ingebrigtsen, Mohammed Sadik, 23298
Stefan Kangas <stefan@marxist.se> writes:
>> 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?
>
> Do we have any electric-pair-mode users who could comment on this?
I for one wish electric-pair-mode to leave balanced closing parenthesis
in this case.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-08-14 9:37 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2016-04-16 1:38 bug#23298: 25.0.92; electric-pair-delete-pair doesn't check if parens are balanced Mohammed Sadik
2019-07-28 20:07 ` Lars Ingebrigtsen
2020-08-12 2:52 ` Stefan Kangas
2020-08-14 9:37 ` Andrii Kolomoiets
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