GNU bug report logs - #74308
30.0.92; emacs-lisp font-locking word regexp

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

From: Roland Winkler <winkler <at> gnu.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.0.92; emacs-lisp font-locking word regexp
Date: Mon, 11 Nov 2024 00:30:46 -0600

Starting from emacs -Q, put the following into a buffer with
emacs-lisp-mode

  (setq foo "\\<foo\\>")

The part "foo\\" of the string "\\<foo\\>" will get
font-lock-variable-name-face, which looks odd.

I believe, this is due to a clause in lisp-mode.el that says

         ;; Words inside \\[], \\<>, \\{} or \\`' tend to be for
         ;; `substitute-command-keys'.

But this assumption is not always correct, in particular if ">" is
preceded by "\\", which happens when constructing regexps.

Message #8 received at 74308 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Roland Winkler <winkler <at> gnu.org>
Cc: 74308 <at> debbugs.gnu.org
Subject: Re: bug#74308: 30.0.92; emacs-lisp font-locking word regexp
Date: Mon, 11 Nov 2024 14:30:35 +0200

merge 74308 74307
thanks

> From: Roland Winkler <winkler <at> gnu.org>
> Date: Mon, 11 Nov 2024 00:30:46 -0600
> 
> Starting from emacs -Q, put the following into a buffer with
> emacs-lisp-mode
> 
>   (setq foo "\\<foo\\>")
> 
> The part "foo\\" of the string "\\<foo\\>" will get
> font-lock-variable-name-face, which looks odd.
> 
> I believe, this is due to a clause in lisp-mode.el that says
> 
>          ;; Words inside \\[], \\<>, \\{} or \\`' tend to be for
>          ;; `substitute-command-keys'.
> 
> But this assumption is not always correct, in particular if ">" is
> preceded by "\\", which happens when constructing regexps.

This is an exact duplicate of bug#74307 that you submitted just 2
minutes earlier, so I'm merging them.

Message #13 received at 74308 <at> debbugs.gnu.org (full text, mbox):

From: Arash Esbati <arash <at> gnu.org>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Roland Winkler <winkler <at> gnu.org>, 74308 <at> debbugs.gnu.org
Subject: Re: bug#74308: 30.0.92; emacs-lisp font-locking word regexp
Date: Sat, 16 Nov 2024 22:33:55 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

> merge 74308 74307
> thanks
>
>> From: Roland Winkler <winkler <at> gnu.org>
>> Date: Mon, 11 Nov 2024 00:30:46 -0600
>> 
>> Starting from emacs -Q, put the following into a buffer with
>> emacs-lisp-mode
>> 
>>   (setq foo "\\<foo\\>")
>> 
>> The part "foo\\" of the string "\\<foo\\>" will get
>> font-lock-variable-name-face, which looks odd.
>> 
>> I believe, this is due to a clause in lisp-mode.el that says
>> 
>>          ;; Words inside \\[], \\<>, \\{} or \\`' tend to be for
>>          ;; `substitute-command-keys'.
>> 
>> But this assumption is not always correct, in particular if ">" is
>> preceded by "\\", which happens when constructing regexps.
>
> This is an exact duplicate of bug#74307 that you submitted just 2
> minutes earlier, so I'm merging them.

I think bug#68318 is also about the same issue; it can be merged into
this one as well.

Best, Arash

Message #16 received at 74308 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Arash Esbati <arash <at> gnu.org>
Cc: 68318-done <at> debbugs.gnu.org, winkler <at> gnu.org, 74308 <at> debbugs.gnu.org
Subject: Re: bug#74308: 30.0.92; emacs-lisp font-locking word regexp
Date: Sun, 17 Nov 2024 08:22:23 +0200

> From: Arash Esbati <arash <at> gnu.org>
> Cc: Roland Winkler <winkler <at> gnu.org>,  74308 <at> debbugs.gnu.org
> Date: Sat, 16 Nov 2024 22:33:55 +0100
> 
> Eli Zaretskii <eliz <at> gnu.org> writes:
> 
> > merge 74308 74307
> > thanks
> >
> >> From: Roland Winkler <winkler <at> gnu.org>
> >> Date: Mon, 11 Nov 2024 00:30:46 -0600
> >> 
> >> Starting from emacs -Q, put the following into a buffer with
> >> emacs-lisp-mode
> >> 
> >>   (setq foo "\\<foo\\>")
> >> 
> >> The part "foo\\" of the string "\\<foo\\>" will get
> >> font-lock-variable-name-face, which looks odd.
> >> 
> >> I believe, this is due to a clause in lisp-mode.el that says
> >> 
> >>          ;; Words inside \\[], \\<>, \\{} or \\`' tend to be for
> >>          ;; `substitute-command-keys'.
> >> 
> >> But this assumption is not always correct, in particular if ">" is
> >> preceded by "\\", which happens when constructing regexps.
> >
> > This is an exact duplicate of bug#74307 that you submitted just 2
> > minutes earlier, so I'm merging them.
> 
> I think bug#68318 is also about the same issue; it can be merged into
> this one as well.

Thanks.  Since this bug was already closed, I'm therefore closing
bug#68318 as well.

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