GNU bug report logs - #27646
Bug: Emacs Lisp Indentation

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Package: emacs; Severity: minor; Reported by: Alexander Shukaev <emacs@HIDDEN>; merged with #21922; dated Mon, 10 Jul 2017 20:07:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.
Forcibly Merged 21922 27646. Request was from Noam Postavsky <npostavs@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Removed tag(s) unreproducible and moreinfo. Request was from Noam Postavsky <npostavs@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 27646 <at> debbugs.gnu.org:


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From: Noam Postavsky <npostavs@HIDDEN>
To: Alexander Shukaev <emacs@HIDDEN>
Subject: Re: bug#27646: Bug: Emacs Lisp Indentation
References: <c88b111b-58e5-4bce-9b63-ca5c3ee2ab6f@HIDDEN>
 <87o9srg4uj.fsf@HIDDEN>
 <87h8tdlt15.fsf@HIDDEN>
 <3288253b-d9cf-ab24-a9d7-26187d0a5de0@HIDDEN>
Date: Fri, 17 Jan 2020 12:58:44 -0500
In-Reply-To: <3288253b-d9cf-ab24-a9d7-26187d0a5de0@HIDDEN>
 (Alexander Shukaev's message of "Thu, 19 Dec 2019 02:27:29 +0100")
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tags 27646 - moreinfo unreproducible
forcemerge 21922 27646
quit

Alexander Shukaev <emacs@HIDDEN> writes:

> to the "*scratch*" buffer and indent to observe the following result
>
> (dolist (symbol '(ignore-errors
>                    xxx
>                    yyy)))
>
> The reason why this happens is because `ignore-errors' is a macro that has
>
> (declare (indent defun))
>
> Any other macro with the same declaration whose innocent symbol is
> used as the first element in a list would reproduce the above
> indentation bug.  Backquote is also affected.

That's Bug#21922, although the backquoted case is intentional (e.g., for
writing code in macros).
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#27646; Package emacs. Full text available.

Message received at 27646 <at> debbugs.gnu.org:


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Subject: Re: bug#27646: Bug: Emacs Lisp Indentation
To: Noam Postavsky <npostavs@HIDDEN>
References: <c88b111b-58e5-4bce-9b63-ca5c3ee2ab6f@HIDDEN>
 <87o9srg4uj.fsf@HIDDEN> <87h8tdlt15.fsf@HIDDEN>
From: Alexander Shukaev <emacs@HIDDEN>
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Date: Thu, 19 Dec 2019 02:27:29 +0100
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On 11/29/17 3:26 AM, Noam Postavsky wrote:
> close 27646
> quit
> 
> npostavs@HIDDEN writes:
> 
>> That would certainly be a bug, but I can't reproduce this, when I run
>> indent-region or indent-sexp on that code I get the correct indentation:
>>
>> (defconst init-font-lock-keywords
>>    `(,@(let ((constant-pattern "\\(?:\\sw\\|\\s_\\)+")
>>              (keywords         nil))
>>          (dolist (symbol '(init-a
>>                            init-b
> 
> Closing, since there's been no followup.
> 

This time I realized what's happening.  Put

(dolist (symbol '(ignore-errors
                   xxx
                   yyy)))

to the "*scratch*" buffer and indent to observe the following result

(dolist (symbol '(ignore-errors
                    xxx
                    yyy)))

The reason why this happens is because `ignore-errors' is a macro that has

(declare (indent defun))

Any other macro with the same declaration whose innocent symbol is used 
as the first element in a list would reproduce the above indentation 
bug.  Backquote is also affected.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#27646; Package emacs. Full text available.
Did not alter fixed versions and reopened. Request was from Debbugs Internal Request <help-debbugs@HIDDEN> to internal_control <at> debbugs.gnu.org. Full text available.
bug unarchived. Request was from Alexander Shukaev <emacs@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
bug archived. Request was from Debbugs Internal Request <help-debbugs@HIDDEN> to internal_control <at> debbugs.gnu.org. Full text available.
bug closed, send any further explanations to 27646 <at> debbugs.gnu.org and Alexander Shukaev <emacs@HIDDEN> Request was from Noam Postavsky <npostavs@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 27646 <at> debbugs.gnu.org:


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From: Noam Postavsky <npostavs@HIDDEN>
To: Alexander Shukaev <emacs@HIDDEN>
Subject: Re: bug#27646: Bug: Emacs Lisp Indentation
References: <c88b111b-58e5-4bce-9b63-ca5c3ee2ab6f@HIDDEN>
 <87o9srg4uj.fsf@HIDDEN>
Date: Tue, 28 Nov 2017 21:26:14 -0500
In-Reply-To: <87o9srg4uj.fsf@HIDDEN> (npostavs's message of
 "Mon, 10 Jul 2017 21:05:56 -0400")
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close 27646
quit

npostavs@HIDDEN writes:

> That would certainly be a bug, but I can't reproduce this, when I run
> indent-region or indent-sexp on that code I get the correct indentation:
>
> (defconst init-font-lock-keywords
>   `(,@(let ((constant-pattern "\\(?:\\sw\\|\\s_\\)+")
>             (keywords         nil))
>         (dolist (symbol '(init-a
>                           init-b

Closing, since there's been no followup.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#27646; Package emacs. Full text available.
Added tag(s) unreproducible. Request was from npostavs@HIDDEN to control <at> debbugs.gnu.org. Full text available.

Message received at 27646 <at> debbugs.gnu.org:


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From: npostavs@HIDDEN
To: Alexander Shukaev <emacs@HIDDEN>
Subject: Re: bug#27646: Bug: Emacs Lisp Indentation
References: <c88b111b-58e5-4bce-9b63-ca5c3ee2ab6f@HIDDEN>
Date: Mon, 10 Jul 2017 21:05:56 -0400
In-Reply-To: <c88b111b-58e5-4bce-9b63-ca5c3ee2ab6f@HIDDEN>
 (Alexander Shukaev's message of "Mon, 10 Jul 2017 22:05:43 +0200")
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tags 27646 + unreproducible
quit

Alexander Shukaev <emacs@HIDDEN> writes:

> Hi,
>
> With latest Emacs, I see the following indentation quirk with the
> Emacs Lisp list:
>
> (defconst init-font-lock-keywords
>   `(,@(let ((constant-pattern "\\(?:\\sw\\|\\s_\\)+")
>             (keywords         nil))
>         (dolist (symbol '(init-a
>                            init-b

That would certainly be a bug, but I can't reproduce this, when I run
indent-region or indent-sexp on that code I get the correct indentation:

(defconst init-font-lock-keywords
  `(,@(let ((constant-pattern "\\(?:\\sw\\|\\s_\\)+")
            (keywords         nil))
        (dolist (symbol '(init-a
                          init-b

In GNU Emacs 26.0.50 (build 60, x86_64-unknown-linux-gnu, X toolkit, Xaw sc=
roll bars)
 of 2017-07-10 built on zony
Repository revision: 689c5c20d1174e95be50e674d05632545eb4b9c5
Windowing system distributor 'The X.Org Foundation', version 11.0.11901000
Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.
You can run the command =E2=80=98emacs-lisp-mode=E2=80=99 with M-x e-li-mo =
RET
Mark set
Indenting region...done
Mark activated

Configured using:
 'configure --cache-file=3D../debug-config.cache 'CFLAGS=3D-O0 -g3
 -march=3Dnative' --enable-checking=3Dyes,glyphs
 --enable-check-lisp-object-type MAKEINFO=3Dmakeinfo-4.13a
 --with-x-toolkit=3Dlucid --with-toolkit-scroll-bars --with-gif=3Dno
 --with-jpeg=3Dno 'CFLAGS=3D-O2 -g3 -march=3Dnative'
 --cache-file=3D../opt-config.cache'

Configured features:
XPM TIFF PNG RSVG SOUND GPM DBUS GSETTINGS NOTIFY ACL GNUTLS LIBXML2
FREETYPE XFT ZLIB TOOLKIT_SCROLL_BARS LUCID X11 LIBSYSTEMD
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#27646; Package emacs. Full text available.

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


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To: bug-gnu-emacs@HIDDEN
From: Alexander Shukaev <emacs@HIDDEN>
Subject: Bug: Emacs Lisp Indentation
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Hi,

With latest Emacs, I see the following indentation quirk with the Emacs 
Lisp list:

(defconst init-font-lock-keywords
   `(,@(let ((constant-pattern "\\(?:\\sw\\|\\s_\\)+")
             (keywords         nil))
         (dolist (symbol '(init-a
                            init-b
                            init-c
                            init-d
                            init-e
                            init-f))
           (push `(,(format "(%s\\_>" symbol)
                   (,constant-pattern
                    (save-excursion
                      (search-forward-regexp ,constant-pattern))
                    nil
                    (0 font-lock-constant-face nil t)))
                 keywords))
         keywords)))

instead of the expected:

(defconst init-font-lock-keywords
   `(,@(let ((constant-pattern "\\(?:\\sw\\|\\s_\\)+")
             (keywords         nil))
         (dolist (symbol '(init-a
                           init-b
                           init-c
                           init-d
                           init-e
                           init-f))
           (push `(,(format "(%s\\_>" symbol)
                   (,constant-pattern
                    (save-excursion
                      (search-forward-regexp ,constant-pattern))
                    nil
                    (0 font-lock-constant-face nil t)))
                 keywords))
         keywords)))

Please, have a look as time permits.  Thank you in advance!

Kind regards,
Alexander
Acknowledgement sent to Alexander Shukaev <emacs@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#27646; Package emacs. Full text available.
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