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* bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate.
       [not found] <87fsp4eygw.fsf.ref@aol.com>
@ 2022-01-31 15:06 ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
  2022-01-31 16:41   ` Eli Zaretskii
  0 siblings, 1 reply; 6+ messages in thread
From: Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2022-01-31 15:06 UTC (permalink / raw)
  To: 53661


Hi:

When adding new pairs to `electric-pair-pairs' the
`electric-pair-inhibit-predicate' variable is not respected.

Looking at the elect-pair file it seems to be related with:
`electric-pair-post-self-insert-function' that hard-coded the condition
to call `electric-pair-inhibit-predicate' with:

(memq syntax '(?\( ?\" ?\$))

So, for other pairs, the function electric-pair-inhibit-predicate is
never called.

The fix only for this seems trivial, but there are hard-coded conditions
like this in many places, so maybe a more "complete" fix may be
desirable.

Best


I faced this issue trying to implement a workaround to add some pairs
that are only electrically inserted when `use-region-p' (Ex: <> or '').


In GNU Emacs 29.0.50 (build 50, x86_64-pc-linux-gnu, GTK+ Version 3.24.31, cairo version 1.17.4)
 of 2022-01-31 built on Ergus
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^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate.
  2022-01-31 15:06 ` bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2022-01-31 16:41   ` Eli Zaretskii
  2022-01-31 17:29     ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
  0 siblings, 1 reply; 6+ messages in thread
From: Eli Zaretskii @ 2022-01-31 16:41 UTC (permalink / raw)
  To: Ergus; +Cc: 53661

> Date: Mon, 31 Jan 2022 16:06:39 +0100
> From:  Ergus via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> When adding new pairs to `electric-pair-pairs' the
> `electric-pair-inhibit-predicate' variable is not respected.
> 
> Looking at the elect-pair file it seems to be related with:
> `electric-pair-post-self-insert-function' that hard-coded the condition
> to call `electric-pair-inhibit-predicate' with:
> 
> (memq syntax '(?\( ?\" ?\$))
> 
> So, for other pairs, the function electric-pair-inhibit-predicate is
> never called.

The above condition looks at the _syntax_ of a character, not at the
character itself.  So what do you find "hard-coded" there,and what
kind of pairs of characters did you want to add that don't have one of
those syntaxes?





^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate.
  2022-01-31 16:41   ` Eli Zaretskii
@ 2022-01-31 17:29     ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
  2022-01-31 18:04       ` Eli Zaretskii
  0 siblings, 1 reply; 6+ messages in thread
From: Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2022-01-31 17:29 UTC (permalink / raw)
  To: Eli Zaretskii; +Cc: 53661

On Mon, Jan 31, 2022 at 06:41:59PM +0200, Eli Zaretskii wrote:
>> Date: Mon, 31 Jan 2022 16:06:39 +0100
>> From:  Ergus via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>>
>> When adding new pairs to `electric-pair-pairs' the
>> `electric-pair-inhibit-predicate' variable is not respected.
>>
>> Looking at the elect-pair file it seems to be related with:
>> `electric-pair-post-self-insert-function' that hard-coded the condition
>> to call `electric-pair-inhibit-predicate' with:
>>
>> (memq syntax '(?\( ?\" ?\$))
>>
>> So, for other pairs, the function electric-pair-inhibit-predicate is
>> never called.
>
>The above condition looks at the _syntax_ of a character, not at the
>character itself.  So what do you find "hard-coded" there,and what
>kind of pairs of characters did you want to add that don't have one of
>those syntaxes?

Hi Eli:

I wanted to add "<>" so I added to my init:

(add-to-list 'electric-pair-pairs '(?< . ?>))

But I wanted to restrict the electric-insertion only to when the region
was active; else using `<` to compare may be wrong; so I thought that
implementing my own `electric-pair-inhibit-predicate' in a simple way
like more or less:

(if (and (eq char ?<) (not (use-region-p)))
     t
     (electric-pair-default-inhibit))

could make the trick, but this doesn't work as I thought. I don't know
if there is a better way to go around this. 





^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate.
  2022-01-31 17:29     ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2022-01-31 18:04       ` Eli Zaretskii
  2022-01-31 19:20         ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
  0 siblings, 1 reply; 6+ messages in thread
From: Eli Zaretskii @ 2022-01-31 18:04 UTC (permalink / raw)
  To: Ergus; +Cc: 53661

> Date: Mon, 31 Jan 2022 18:29:31 +0100
> From: Ergus <spacibba@aol.com>
> Cc: 53661@debbugs.gnu.org
> 
> >> (memq syntax '(?\( ?\" ?\$))
> >>
> >> So, for other pairs, the function electric-pair-inhibit-predicate is
> >> never called.
> >
> >The above condition looks at the _syntax_ of a character, not at the
> >character itself.  So what do you find "hard-coded" there,and what
> >kind of pairs of characters did you want to add that don't have one of
> >those syntaxes?
> 
> Hi Eli:
> 
> I wanted to add "<>" so I added to my init:
> 
> (add-to-list 'electric-pair-pairs '(?< . ?>))

And it didn't work because of the hard-coded syntaxes?

What is the syntax of ?< in the mode where you wanted to add that?





^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate.
  2022-01-31 18:04       ` Eli Zaretskii
@ 2022-01-31 19:20         ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
  2022-01-31 19:28           ` Eli Zaretskii
  0 siblings, 1 reply; 6+ messages in thread
From: Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors @ 2022-01-31 19:20 UTC (permalink / raw)
  To: Eli Zaretskii; +Cc: 53661

On Mon, Jan 31, 2022 at 08:04:02PM +0200, Eli Zaretskii wrote:
>> Date: Mon, 31 Jan 2022 18:29:31 +0100
>> From: Ergus <spacibba@aol.com>
>> Cc: 53661@debbugs.gnu.org
>>
>> >> (memq syntax '(?\( ?\" ?\$))
>> >>
>> >> So, for other pairs, the function electric-pair-inhibit-predicate is
>> >> never called.
>> >
>> >The above condition looks at the _syntax_ of a character, not at the
>> >character itself.  So what do you find "hard-coded" there,and what
>> >kind of pairs of characters did you want to add that don't have one of
>> >those syntaxes?
>>
>> Hi Eli:
>>
>> I wanted to add "<>" so I added to my init:
>>
>> (add-to-list 'electric-pair-pairs '(?< . ?>))
>
>And it didn't work because of the hard-coded syntaxes?
>
Adding to the list worked correctly, What didn't work was to use the
electric-pair-inhibit-predicate that was never called, so a < always
inserted a >.

>What is the syntax of ?< in the mode where you wanted to add that?

It is just c++-mode.





^ permalink raw reply	[flat|nested] 6+ messages in thread

* bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate.
  2022-01-31 19:20         ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
@ 2022-01-31 19:28           ` Eli Zaretskii
  0 siblings, 0 replies; 6+ messages in thread
From: Eli Zaretskii @ 2022-01-31 19:28 UTC (permalink / raw)
  To: Ergus; +Cc: 53661

> Date: Mon, 31 Jan 2022 20:20:01 +0100
> From: Ergus <spacibba@aol.com>
> Cc: 53661@debbugs.gnu.org
> 
> >> I wanted to add "<>" so I added to my init:
> >>
> >> (add-to-list 'electric-pair-pairs '(?< . ?>))
> >
> >And it didn't work because of the hard-coded syntaxes?
> >
> Adding to the list worked correctly, What didn't work was to use the
> electric-pair-inhibit-predicate that was never called, so a < always
> inserted a >.
> 
> >What is the syntax of ?< in the mode where you wanted to add that?
> 
> It is just c++-mode.

And that is your problem, I believe: <> in C++ aren't treated as
parentheses or string delimiters, so their syntax doesn't fit what
electric-pair-mode assumes.

IOW, you need a different, C++ specific feature.  (I'd be surprised if
none already existed, btw.)





^ permalink raw reply	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2022-01-31 19:28 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
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     [not found] <87fsp4eygw.fsf.ref@aol.com>
2022-01-31 15:06 ` bug#53661: 29.0.50; electric-pair-mode not respecting electric-pair-inhibit-predicate Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-31 16:41   ` Eli Zaretskii
2022-01-31 17:29     ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-31 18:04       ` Eli Zaretskii
2022-01-31 19:20         ` Ergus via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-01-31 19:28           ` Eli Zaretskii

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