GNU bug report logs - #79047
Add some multi-character pairs to some major modes.

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Package: emacs; Reported by: Elijah Gabe PĂ©rez <eg642616@HIDDEN>; dated Sat, 19 Jul 2025 02:05:02 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.

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To: Elijah Gabe =?iso-8859-1?Q?P=E9rez?= <eg642616@HIDDEN>
Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
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From: Alan Mackenzie <acm@HIDDEN>
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Hello, Elijah.

One important point.

On Sat, Jul 19, 2025 at 09:42:52 +0300, Eli Zaretskii wrote:
> > From: Elijah Gabe Pérez <eg642616@HIDDEN>
> > Date: Fri, 18 Jul 2025 20:04:12 -0600

> > Since `electric-pair-mode` now supports multi-character pairs, it would
> > be better if some major modes add some of these pairs.

Are you sure about this?  In NEWS, there is the rather sloppily worded
entry:

    ** Electric Pair mode can now pair multiple delimiters at once.
    You can now insert or wrap text with multiple sets of parentheses and
    other matching delimiters at once with Electric Pair mode, by providing
    a prefix argument when inserting one of the delimiters.

It uses the sloppy American English ambiguity where "multiple" can mean
either "several", or "composed of several parts".  In correct British
English "multiple" has only the latter meaning.

I think in this NEWS entry the meaning "several" was intended, and you
may have misread it.  I don't think electric-pair-mode has any facilities
for pairing a multiple delimiter; only for pairing several of the same
delimiter at once, e.g. (((....))).

Please check if I am correct or mistaken on this point.  If I'm correct,
then the prerequisites for implementing this change are absent, and there
is nothing more to discuss.

> > Before making the patch for this (and to avoid doing another regression
> > like bug#77823), here is a list of the modes and their possible pairs:

[ .... ]

-- 
Alan Mackenzie (Nuremberg, Germany).
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.

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From: john muhl <jm@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
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Eli Zaretskii <eliz@HIDDEN> writes:

>> From: Elijah Gabe P=C3=A9rez <eg642616@HIDDEN>
>> Date: Fri, 18 Jul 2025 20:04:12 -0600
>>=20
>> Since `electric-pair-mode` now supports multi-character pairs, it would
>> be better if some major modes add some of these pairs.
>>=20
>> Before making the patch for this (and to avoid doing another regression
>> like bug#77823), here is a list of the modes and their possible pairs:
>>=20
>>  - c-like modes
>>      "/*" "*/"
>>  - lua-ts-mode
>>      "--[" "--]"
>>  - texinfo-mode (idk which others one) (based in a Stefan Monnier idea)
>>      "``" "''"
>>  - lisp-mode (common-lisp-mode)
>>     "#|" "|#"
>>=20
>> What do you think?
>
> When discussing in a bug report issues related to some specific
> packages, it is usually a good idea to CC the authors/developers of
> those packages, because we cannot be sure they track the bug-gnu-emacs
> list all the time.
>
> I've now added people who I think are relevant to your proposal.
>
> Thanks.

I=E2=80=99m not sure what the question is here but in general if someone fi=
nds
something useful to add to lua-ts-mode I=E2=80=99m fine with it; especially=
 if
it comes with tests for the change.

Just reading the above I=E2=80=99d point out that Lua multi-line comments a=
ren=E2=80=99t
symmetrical:

  --[[
  Here is a very
  long comment.
  ]]

and electric-pair-mode already works in that case.

Some people like to add a second pair of dashes before the closing
brackets but they are stylistic, not a requirement.

Elijah, if I missed the point then maybe you could show the proposed
patch to lua-ts-mode.

Thanks.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.

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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Alan Mackenzie <acm@HIDDEN>
Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
In-Reply-To: <aHvNXbZE6Jsueh1_@HIDDEN>
References: <87ms91gcmb.fsf@HIDDEN> <867c04fzpv.fsf@HIDDEN>
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Alan Mackenzie <acm@HIDDEN> writes:

>> > Elijah, I'm speaking here from the point of view of CC Mode.
>
>> > What exactly do you mean by "adding" these multi-character pairs?  What
>> > would the user see that she doesn't already see?
>
>> These pairs are meant to be used in for auto-close block comments, after
>> the user types "/*", the corresponding "*/" will be inserted, packages
>> such as smartparens provide this behavior to most C-like modes.
>
> OK, thanks.
>
> But who's going to want to do this when there's M-; `comment-dwim' which
> inserts both the comment opener and comment closer in a single key
> stroke?

comment-dwim sometimes doesn't insert the comments where i want, it
mostly insert the comments at the end of the line, or indent them
according to `comment-column` (which ofc can be configured, but in most
the cases, it will not work as expected).

> Surely anybody typing /* explicitly will being doing so on a
> rare occasion when she _doesn't_ want the closing */ also inserted.

The feature can be optional, enabled via an user option or command,
similar to `c-toggle-auto-newline`.

>> > Or are you talking about doing something we already do, but in a
>> > different way?
>
>> I don't know if CC Mode have something similar.
>
> M-; is common to most (?all) programming and text modes.

Right, but calling comment-dwim in some modes doesn't insert a block
comment, even if those modes supports block comments, (e.g. js-mode)

-- 
- E.G via GNU Emacs and Org.
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Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
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Hello, Elijah.

On Sat, Jul 19, 2025 at 10:39:03 -0600, Elijah Gabe Pérez wrote:
> Alan Mackenzie <acm@HIDDEN> writes:

> >> > From: Elijah Gabe Pérez <eg642616@HIDDEN>
> >> > Date: Fri, 18 Jul 2025 20:04:12 -0600

> >> > Since `electric-pair-mode` now supports multi-character pairs, it would
> >> > be better if some major modes add some of these pairs.

> >> > Before making the patch for this (and to avoid doing another regression
> >> > like bug#77823), here is a list of the modes and their possible pairs:

> >> >  - c-like modes
> >> >      "/*" "*/"

> > Elijah, I'm speaking here from the point of view of CC Mode.

> > What exactly do you mean by "adding" these multi-character pairs?  What
> > would the user see that she doesn't already see?

> These pairs are meant to be used in for auto-close block comments, after
> the user types "/*", the corresponding "*/" will be inserted, packages
> such as smartparens provide this behavior to most C-like modes.

OK, thanks.

But who's going to want to do this when there's M-; `comment-dwim' which
inserts both the comment opener and comment closer in a single key
stroke?  Surely anybody typing /* explicitly will being doing so on a
rare occasion when she _doesn't_ want the closing */ also inserted.

> > Or are you talking about doing something we already do, but in a
> > different way?

> I don't know if CC Mode have something similar.

M-; is common to most (?all) programming and text modes.

> -- 
> - E.G via GNU Emacs and Org.

-- 
Alan Mackenzie (Nuremberg, Germany).
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.

Message received at 79047 <at> debbugs.gnu.org:


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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: Alan Mackenzie <acm@HIDDEN>
Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
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Alan Mackenzie <acm@HIDDEN> writes:

>> > From: Elijah Gabe P=C3=A9rez <eg642616@HIDDEN>
>> > Date: Fri, 18 Jul 2025 20:04:12 -0600
>
>> > Since `electric-pair-mode` now supports multi-character pairs, it would
>> > be better if some major modes add some of these pairs.
>
>> > Before making the patch for this (and to avoid doing another regression
>> > like bug#77823), here is a list of the modes and their possible pairs:
>
>> >  - c-like modes
>> >      "/*" "*/"
>
> Elijah, I'm speaking here from the point of view of CC Mode.
>
> What exactly do you mean by "adding" these multi-character pairs?  What
> would the user see that she doesn't already see?

These pairs are meant to be used in for auto-close block comments, after
the user types "/*", the corresponding "*/" will be inserted, packages
such as smartparens provide this behavior to most C-like modes.

> Or are you talking about doing something we already do, but in a
> different way?

I don't know if CC Mode have something similar.

--=20
- E.G via GNU Emacs and Org.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.

Message received at 79047 <at> debbugs.gnu.org:


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Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
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Hello, Eli.

Thanks for the heads up!

On Sat, Jul 19, 2025 at 09:42:52 +0300, Eli Zaretskii wrote:
> > From: Elijah Gabe Pérez <eg642616@HIDDEN>
> > Date: Fri, 18 Jul 2025 20:04:12 -0600

> > Since `electric-pair-mode` now supports multi-character pairs, it would
> > be better if some major modes add some of these pairs.

> > Before making the patch for this (and to avoid doing another regression
> > like bug#77823), here is a list of the modes and their possible pairs:

> >  - c-like modes
> >      "/*" "*/"

Elijah, I'm speaking here from the point of view of CC Mode.

What exactly do you mean by "adding" these multi-character pairs?  What
would the user see that she doesn't already see?

Or are you talking about doing something we already do, but in a
different way?

> >  - lua-ts-mode
> >      "--[" "--]"
> >  - texinfo-mode (idk which others one) (based in a Stefan Monnier idea)
> >      "``" "''"
> >  - lisp-mode (common-lisp-mode)
> >     "#|" "|#"

> > What do you think?

> When discussing in a bug report issues related to some specific
> packages, it is usually a good idea to CC the authors/developers of
> those packages, because we cannot be sure they track the bug-gnu-emacs
> list all the time.

> I've now added people who I think are relevant to your proposal.

> Thanks.

-- 
Alan Mackenzie (Nuremberg, Germany).
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.

Message received at 79047 <at> debbugs.gnu.org:


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Subject: Re: bug#79047: Add some multi-character pairs to some major modes.
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> From: Elijah Gabe Pérez <eg642616@HIDDEN>
> Date: Fri, 18 Jul 2025 20:04:12 -0600
> 
> Since `electric-pair-mode` now supports multi-character pairs, it would
> be better if some major modes add some of these pairs.
> 
> Before making the patch for this (and to avoid doing another regression
> like bug#77823), here is a list of the modes and their possible pairs:
> 
>  - c-like modes
>      "/*" "*/"
>  - lua-ts-mode
>      "--[" "--]"
>  - texinfo-mode (idk which others one) (based in a Stefan Monnier idea)
>      "``" "''"
>  - lisp-mode (common-lisp-mode)
>     "#|" "|#"
> 
> What do you think?

When discussing in a bug report issues related to some specific
packages, it is usually a good idea to CC the authors/developers of
those packages, because we cannot be sure they track the bug-gnu-emacs
list all the time.

I've now added people who I think are relevant to your proposal.

Thanks.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.

Message received at submit <at> debbugs.gnu.org:


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From: =?utf-8?Q?Elijah_Gabe_P=C3=A9rez?= <eg642616@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: Add some multi-character pairs to some major modes.
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 Content preview: Since `electric-pair-mode` now supports multi-character pairs,
 it would be better if some major modes add some of these pairs. Before making
 the patch for this (and to avoid doing another regression like bug#77823),
 here is a list of the modes and their possible pairs: 
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Since `electric-pair-mode` now supports multi-character pairs, it would
be better if some major modes add some of these pairs.

Before making the patch for this (and to avoid doing another regression
like bug#77823), here is a list of the modes and their possible pairs:

 - c-like modes
     "/*" "*/"
 - lua-ts-mode
     "--[" "--]"
 - texinfo-mode (idk which others one) (based in a Stefan Monnier idea)
     "``" "''"
 - lisp-mode (common-lisp-mode)
    "#|" "|#"

What do you think?

-- 
- E.G via GNU Emacs and Org.
Acknowledgement sent to Elijah Gabe PĂ©rez <eg642616@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#79047; Package emacs. Full text available.
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