GNU bug report logs - #65591
30.0.50; ELPA pgk expreg: marking paragraph doesn't work in AUCTeX LaTeX-mode

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

From: Tassilo Horn <thorn <at> fastmail.fm>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.50; ELPA pgk expreg: marking paragraph doesn't work in AUCTeX
 LaTeX-mode
Date: Tue, 29 Aug 2023 12:13:57 +0200

When using `expreg-expand' repeatedly in an AUCTeX LaTeX-mode buffer, it
will never mark the complete paragraph.  The reason is that
`expreg--paragraph' tries to distinguish between programming and
text/prose modes where in the former, it wants to mark the defun whereas
in the latter, it marks the paragraph.

AUCTeX LaTeX-mode (and (La)TeX as a language) is kind of a middle ground
between prog-mode and text-mode.  It is derived from text-mode (and NOT
prog-mode) but it defines a `beginning-of-defun-function' which deals
with environments, e.g., \begin{foo}...\end{foo}.  It can make sense to
mark both, the current environment as well as the current paragraph.
However, currently expreg defines a programming mode to derive from
prog-mode OR define a `beginning-of-defun-function' and for a
programming mode, paragraph marking is disabled.

I guess it would be better to have separate `expreg--paragraph' and
`expreg--defun' functions instead of conflating paragraph and defun
marking in `expreg--paragraph'.


In GNU Emacs 30.0.50 (build 17, x86_64-pc-linux-gnu, GTK+ Version
 3.24.38, cairo version 1.17.8) of 2023-08-29 built on thinkpad-t440p
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Message #8 received at 65591 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Tassilo Horn <thorn <at> fastmail.fm>
Cc: 65591 <at> debbugs.gnu.org
Subject: Re: bug#65591: 30.0.50; ELPA pgk expreg: marking paragraph doesn't
 work in AUCTeX LaTeX-mode
Date: Wed, 30 Aug 2023 00:31:47 -0700

> 
> When using `expreg-expand' repeatedly in an AUCTeX LaTeX-mode buffer, it
> will never mark the complete paragraph.  The reason is that
> `expreg--paragraph' tries to distinguish between programming and
> text/prose modes where in the former, it wants to mark the defun whereas
> in the latter, it marks the paragraph.
> 
> AUCTeX LaTeX-mode (and (La)TeX as a language) is kind of a middle ground
> between prog-mode and text-mode.  It is derived from text-mode (and NOT
> prog-mode) but it defines a `beginning-of-defun-function' which deals
> with environments, e.g., \begin{foo}...\end{foo}.  It can make sense to
> mark both, the current environment as well as the current paragraph.
> However, currently expreg defines a programming mode to derive from
> prog-mode OR define a `beginning-of-defun-function' and for a
> programming mode, paragraph marking is disabled.
> 
> I guess it would be better to have separate `expreg--paragraph' and
> `expreg--defun' functions instead of conflating paragraph and defun
> marking in `expreg--paragraph’.

I make expreg—paragraph to process both defun and paragraph, rather exclusively one of them. This should fix It for TeX modes. Please see if works :-)

Yuan

Message #11 received at 65591 <at> debbugs.gnu.org (full text, mbox):

From: Tassilo Horn <thorn <at> fastmail.fm>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 65591 <at> debbugs.gnu.org
Subject: Re: bug#65591: 30.0.50; ELPA pgk expreg: marking paragraph doesn't
 work in AUCTeX LaTeX-mode
Date: Wed, 30 Aug 2023 17:54:58 +0200

Yuan Fu <casouri <at> gmail.com> writes:

Hi Yuan,

> I make expreg—paragraph to process both defun and paragraph, rather
> exclusively one of them. This should fix It for TeX modes. Please see
> if works :-)

Not quite.  The problem is that expreg--paragraph-defun now first tries
"defun" and thereby might move point so that the "paragraph" part starts
at a completely different position as where point was originally.

Bye,
Tassilo

Message #14 received at 65591 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Tassilo Horn <thorn <at> fastmail.fm>
Cc: 65591 <at> debbugs.gnu.org
Subject: Re: bug#65591: 30.0.50; ELPA pgk expreg: marking paragraph doesn't
 work in AUCTeX LaTeX-mode
Date: Wed, 30 Aug 2023 17:05:02 -0700

> On Aug 30, 2023, at 8:54 AM, Tassilo Horn <thorn <at> fastmail.fm> wrote:
> 
> Yuan Fu <casouri <at> gmail.com> writes:
> 
> Hi Yuan,
> 
>> I make expreg—paragraph to process both defun and paragraph, rather
>> exclusively one of them. This should fix It for TeX modes. Please see
>> if works :-)
> 
> Not quite.  The problem is that expreg--paragraph-defun now first tries
> "defun" and thereby might move point so that the "paragraph" part starts
> at a completely different position as where point was originally.

Ah, right! I pushed a fix for that.

Thanks,
Yuan

Message #17 received at 65591 <at> debbugs.gnu.org (full text, mbox):

From: Tassilo Horn <thorn <at> fastmail.fm>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 65591 <at> debbugs.gnu.org
Subject: Re: bug#65591: 30.0.50; ELPA pgk expreg: marking paragraph doesn't
 work in AUCTeX LaTeX-mode
Date: Thu, 31 Aug 2023 12:33:22 +0200

Yuan Fu <casouri <at> gmail.com> writes:

>> Not quite.  The problem is that expreg--paragraph-defun now first
>> tries "defun" and thereby might move point so that the "paragraph"
>> part starts at a completely different position as where point was
>> originally.
>
> Ah, right! I pushed a fix for that.

Yes, now it looks right.  Unfortunately, there seems to be a bug in
AUCTeX end-of-defun-function so right now, I only get paragraph marking
but not "defun" (aka current environment) marking.  But from expreg's
point of view, this issue can be closed.

Thanks a lot,
Tassilo

Message #22 received at 65591-done <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Tassilo Horn <thorn <at> fastmail.fm>
Cc: 65591-done <at> debbugs.gnu.org
Subject: Re: bug#65591: 30.0.50; ELPA pgk expreg: marking paragraph doesn't
 work in AUCTeX LaTeX-mode
Date: Thu, 31 Aug 2023 12:06:16 -0700

> On Aug 31, 2023, at 3:33 AM, Tassilo Horn <thorn <at> fastmail.fm> wrote:
> 
> Yuan Fu <casouri <at> gmail.com> writes:
> 
>>> Not quite.  The problem is that expreg--paragraph-defun now first
>>> tries "defun" and thereby might move point so that the "paragraph"
>>> part starts at a completely different position as where point was
>>> originally.
>> 
>> Ah, right! I pushed a fix for that.
> 
> Yes, now it looks right.  Unfortunately, there seems to be a bug in
> AUCTeX end-of-defun-function so right now, I only get paragraph marking
> but not "defun" (aka current environment) marking.  But from expreg's
> point of view, this issue can be closed.
> 
> Thanks a lot,
> Tassilo

Great! Closing this.

Yuan

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