GNU bug report logs - #41442
26.3; `forward-sexp' in LaTeX mode

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 26.3; `forward-sexp' in LaTeX mode
Date: Thu, 21 May 2020 13:38:42 -0700 (PDT)

Dunno whether this is a bug (haven't used LaTeX in 30 years).

See https://emacs.stackexchange.com/q/58644/105

Seems like `forward-sexp', with cursor before the `{', should move past
the `}'.  Instead, it takes account of parens in between: if they are
balanced then it moves to the `}'.  Else it moves to a `)' that seems to
balance the `{'.

In LaTeX does it ever really make sense for `)' to balance `{'?
If not, then I think we have a bug.  Hopefully someone familiar with
LaTeX will be able to judge.

In GNU Emacs 26.3 (build 1, x86_64-w64-mingw32)
 of 2019-08-29
Repository revision: 96dd0196c28bc36779584e47fffcca433c9309cd
Windowing system distributor `Microsoft Corp.', version 10.0.18362
Configured using:
 `configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static -g3''

Message #8 received at 41442 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 41442 <at> debbugs.gnu.org
Subject: Re: bug#41442: 26.3; `forward-sexp' in LaTeX mode
Date: Wed, 09 Dec 2020 14:55:57 +0100

Drew Adams <drew.adams <at> oracle.com> writes:

> Dunno whether this is a bug (haven't used LaTeX in 30 years).
>
> See https://emacs.stackexchange.com/q/58644/105
>
> Seems like `forward-sexp', with cursor before the `{', should move past
> the `}'.  Instead, it takes account of parens in between: if they are
> balanced then it moves to the `}'.  Else it moves to a `)' that seems to
> balance the `{'.
>
> In LaTeX does it ever really make sense for `)' to balance `{'?
> If not, then I think we have a bug.  Hopefully someone familiar with
> LaTeX will be able to judge.

emacs -Q a.tex
\foo{bar (zot) gazonk}

I tried `C-M-f' on the first { character, and it skipped to the closing
} character.

Do you have a test case to reproduce this bug?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 41442 <at> debbugs.gnu.org (full text, mbox):

From: Drew Adams <drew.adams <at> oracle.com>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 41442 <at> debbugs.gnu.org
Subject: RE: bug#41442: 26.3; `forward-sexp' in LaTeX mode
Date: Wed, 9 Dec 2020 08:41:34 -0800 (PST)

> Do you have a test case to reproduce this bug?

No.  As I made clear, I just reported what was signaled
on emacs.SE.  See the URL in the bug report - maybe that
will help (or not).

Message #16 received at 41442 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Drew Adams <drew.adams <at> oracle.com>
Cc: 41442 <at> debbugs.gnu.org
Subject: Re: bug#41442: 26.3; `forward-sexp' in LaTeX mode
Date: Wed, 09 Dec 2020 17:49:49 +0100

Drew Adams <drew.adams <at> oracle.com> writes:

>> Do you have a test case to reproduce this bug?
>
> No.  As I made clear, I just reported what was signaled
> on emacs.SE.  See the URL in the bug report - maybe that
> will help (or not).

OK, without a test case it's unlikely that we'll make progress here, and
I'm closing this bug report.  If progress can be made, respond to the
debbugs address and we'll reopen.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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