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Subject: bug#65092: 30.0.50; C-h f shows malformed description for vc-mode
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From: Eshel Yaron <me@HIDDEN>
Date: Sat, 05 Aug 2023 14:25:11 +0300
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I seems to have stumbled upon an issue with type inference on the master
branch that causes `describe-function` to display the following
malformed description for the function `vc-mode`:
vc-mode is a native-compiled Lisp function in =E2=80=98vc-hooks.el=E2=
=80=99.
(vc-mode &optional ARG)
Inferred type: (function (&optional t) (member Version Control minor
mode. This minor mode is automatically activated whenever you visit a
file under control of one of the revision control systems in
`vc-handled-backends'. VC commands are globally reachable under the
prefix `\[vc-prefix-map]': \{vc-prefix-map}))
Version Control minor mode.
This minor mode is automatically activated whenever you...
To reproduce, do `C-h f vc-mode RET` in `emacs -Q`.
Basically, it looks like the inferred type somehow includes the
function's docstring verbatim:
--8<---------------cut here---------------start------------->8---
(comp-function-type-spec 'vc-mode)
=3D> ((function (&optional t) (member "Version Control minor mode.
This minor mode is automatically activated whenever you visit a file under
control of one of the revision control systems in `vc-handled-backends'.
VC commands are globally reachable under the prefix `\\[vc-prefix-map]':
\\{vc-prefix-map}")) . inferred)
--8<---------------cut here---------------end--------------->8---
In GNU Emacs 30.0.50 (build 3, x86_64-apple-darwin22.5.0, NS
appkit-2299.60 Version 13.4 (Build 22F66)) of 2023-08-03 built on
Dazzs-MBP
Repository revision: 7b30e11b2ac5cd360db7ee8b6aed07bd918b93a2
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2299
System Description: macOS 13.4
Configured using:
'configure 'CFLAGS=3D-g0 -O3' --with-native-compilation --with-json
--with-imagemagick --with-tree-sitter --enable-link-time-optimization'
Configured features:
ACL DBUS GIF GMP GNUTLS IMAGEMAGICK JPEG JSON LCMS2 LIBXML2 MODULES
NATIVE_COMP NOTIFY KQUEUE NS PDUMPER PNG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: Help
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
isearch-fold-quotes-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
buffer-read-only: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils time-date shortdoc vc-annotate vc-dir ewoc
vc vc-filewise vc-git diff-mode easy-mmode vc-dispatcher compile
text-property-search comint ansi-osc ansi-color ring comp comp-cstr
warnings icons subr-x rx cl-seq cl-macs gv cl-extra bytecomp
byte-compile thingatpt help-fns radix-tree help-mode cl-loaddefs cl-lib
rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/ns-win ns-win
ucs-normalize mule-util term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind kqueue cocoa ns
lcms2 multi-tty make-network-process native-compile emacs)
Memory information:
((conses 16 117625 14245) (symbols 48 8927 0) (strings 32 28340 1637)
(string-bytes 1 843928) (vectors 16 20095)
(vector-slots 8 394629 13087) (floats 8 92 641) (intervals 56 470 0)
(buffers 984 13))
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Eshel Yaron <me@HIDDEN> Subject: bug#65092: Acknowledgement (30.0.50; C-h f shows malformed description for vc-mode) Message-ID: <handler.65092.B.169123472723379.ack <at> debbugs.gnu.org> References: <m1sf8xn33c.fsf@HIDDEN> X-Gnu-PR-Message: ack 65092 X-Gnu-PR-Package: emacs Reply-To: 65092 <at> debbugs.gnu.org Date: Sat, 05 Aug 2023 11:26:02 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-gnu-emacs@HIDDEN If you wish to submit further information on this problem, please send it to 65092 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 65092: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D65092 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
X-Loop: help-debbugs@HIDDEN
Subject: bug#65092: 30.0.50; C-h f shows malformed description for vc-mode
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From: Eli Zaretskii <eliz@HIDDEN>
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> Date: Sat, 05 Aug 2023 14:25:11 +0300
> From: Eshel Yaron via "Bug reports for GNU Emacs,
> the Swiss army knife of text editors" <bug-gnu-emacs@HIDDEN>
>
>
> I seems to have stumbled upon an issue with type inference on the master
> branch that causes `describe-function` to display the following
> malformed description for the function `vc-mode`:
>
> vc-mode is a native-compiled Lisp function in ‘vc-hooks.el’.
>
> (vc-mode &optional ARG)
>
> Inferred type: (function (&optional t) (member Version Control minor
> mode. This minor mode is automatically activated whenever you visit a
> file under control of one of the revision control systems in
> `vc-handled-backends'. VC commands are globally reachable under the
> prefix `\[vc-prefix-map]': \{vc-prefix-map}))
>
> Version Control minor mode.
> This minor mode is automatically activated whenever you...
>
> To reproduce, do `C-h f vc-mode RET` in `emacs -Q`.
>
> Basically, it looks like the inferred type somehow includes the
> function's docstring verbatim:
>
> --8<---------------cut here---------------start------------->8---
> (comp-function-type-spec 'vc-mode)
> => ((function (&optional t) (member "Version Control minor mode.
> This minor mode is automatically activated whenever you visit a file under
> control of one of the revision control systems in `vc-handled-backends'.
> VC commands are globally reachable under the prefix `\\[vc-prefix-map]':
> \\{vc-prefix-map}")) . inferred)
> --8<---------------cut here---------------end--------------->8---
Probably because vc-mode is a "dummy function", whatever that means.
IOW, we are shooting ourselves in the foot, it seems like.
Adding Andrea.
X-Loop: help-debbugs@HIDDEN
Subject: bug#65092: 30.0.50; C-h f shows malformed description for vc-mode
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> I seems to have stumbled upon an issue with type inference on the master
> branch that causes `describe-function` to display the following
> malformed description for the function `vc-mode`:
>
> vc-mode is a native-compiled Lisp function in =E2=80=98vc-hooks.el=E2=
=80=99.
>
> (vc-mode &optional ARG)
>
> Inferred type: (function (&optional t) (member Version Control minor
> mode. This minor mode is automatically activated whenever you visit a
> file under control of one of the revision control systems in
> `vc-handled-backends'. VC commands are globally reachable under the
> prefix `\[vc-prefix-map]': \{vc-prefix-map}))
>
> Version Control minor mode.
> This minor mode is automatically activated whenever you...
>
> To reproduce, do `C-h f vc-mode RET` in `emacs -Q`.
>
> Basically, it looks like the inferred type somehow includes the
> function's docstring verbatim:
>
> --8<---------------cut here---------------start------------->8---
> (comp-function-type-spec 'vc-mode)
> =3D> ((function (&optional t) (member "Version Control minor mode.
> This minor mode is automatically activated whenever you visit a file under
> control of one of the revision control systems in `vc-handled-backends'.
> VC commands are globally reachable under the prefix `\\[vc-prefix-map]':
> \\{vc-prefix-map}")) . inferred)
> --8<---------------cut here---------------end--------------->8---
This output is actually "correct" =F0=9F=99=81
I've just pushed a fix for it in `master` by giving an actual body to
the function, in addition to its doc string.
Stefan
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Subject: bug#65092: closed (30.0.50; C-h f shows malformed description for
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From: Eshel Yaron <me@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 30.0.50; C-h f shows malformed description for vc-mode
Date: Sat, 05 Aug 2023 14:25:11 +0300
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I seems to have stumbled upon an issue with type inference on the master
branch that causes `describe-function` to display the following
malformed description for the function `vc-mode`:
vc-mode is a native-compiled Lisp function in =E2=80=98vc-hooks.el=E2=
=80=99.
(vc-mode &optional ARG)
Inferred type: (function (&optional t) (member Version Control minor
mode. This minor mode is automatically activated whenever you visit a
file under control of one of the revision control systems in
`vc-handled-backends'. VC commands are globally reachable under the
prefix `\[vc-prefix-map]': \{vc-prefix-map}))
Version Control minor mode.
This minor mode is automatically activated whenever you...
To reproduce, do `C-h f vc-mode RET` in `emacs -Q`.
Basically, it looks like the inferred type somehow includes the
function's docstring verbatim:
--8<---------------cut here---------------start------------->8---
(comp-function-type-spec 'vc-mode)
=3D> ((function (&optional t) (member "Version Control minor mode.
This minor mode is automatically activated whenever you visit a file under
control of one of the revision control systems in `vc-handled-backends'.
VC commands are globally reachable under the prefix `\\[vc-prefix-map]':
\\{vc-prefix-map}")) . inferred)
--8<---------------cut here---------------end--------------->8---
In GNU Emacs 30.0.50 (build 3, x86_64-apple-darwin22.5.0, NS
appkit-2299.60 Version 13.4 (Build 22F66)) of 2023-08-03 built on
Dazzs-MBP
Repository revision: 7b30e11b2ac5cd360db7ee8b6aed07bd918b93a2
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2299
System Description: macOS 13.4
Configured using:
'configure 'CFLAGS=3D-g0 -O3' --with-native-compilation --with-json
--with-imagemagick --with-tree-sitter --enable-link-time-optimization'
Configured features:
ACL DBUS GIF GMP GNUTLS IMAGEMAGICK JPEG JSON LCMS2 LIBXML2 MODULES
NATIVE_COMP NOTIFY KQUEUE NS PDUMPER PNG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: Help
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
isearch-fold-quotes-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
buffer-read-only: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils time-date shortdoc vc-annotate vc-dir ewoc
vc vc-filewise vc-git diff-mode easy-mmode vc-dispatcher compile
text-property-search comint ansi-osc ansi-color ring comp comp-cstr
warnings icons subr-x rx cl-seq cl-macs gv cl-extra bytecomp
byte-compile thingatpt help-fns radix-tree help-mode cl-loaddefs cl-lib
rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/ns-win ns-win
ucs-normalize mule-util term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind kqueue cocoa ns
lcms2 multi-tty make-network-process native-compile emacs)
Memory information:
((conses 16 117625 14245) (symbols 48 8927 0) (strings 32 28340 1637)
(string-bytes 1 843928) (vectors 16 20095)
(vector-slots 8 394629 13087) (floats 8 92 641) (intervals 56 470 0)
(buffers 984 13))
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From: Sean Whitton <spwhitton@HIDDEN>
To: Stefan Monnier <monnier@HIDDEN>, 65092-done <at> debbugs.gnu.org
Subject: Re: bug#65092: 30.0.50; C-h f shows malformed description for vc-mode
In-Reply-To: <jwv1q90qufd.fsf-monnier+emacs@HIDDEN>
References: <m1sf8xn33c.fsf@HIDDEN>
<jwv1q90qufd.fsf-monnier+emacs@HIDDEN>
Date: Fri, 14 Mar 2025 12:17:17 +0800
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Hello,
Confirmed fixed, thank you.
--
Sean Whitton
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From: help-debbugs@HIDDEN (GNU bug Tracking System)
To: Eshel Yaron <me@HIDDEN>
Subject: bug#65092: closed (Re: bug#65092: 30.0.50; C-h f shows malformed
description for vc-mode)
Message-ID: <handler.65092.D65092.174192584816845.notifdone <at> debbugs.gnu.org>
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Your bug report
#65092: 30.0.50; C-h f shows malformed description for vc-mode
which was filed against the emacs package, has been closed.
The explanation is attached below, along with your original report.
If you require more details, please reply to 65092 <at> debbugs.gnu.org.
--=20
65092: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D65092
GNU Bug Tracking System
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From: Sean Whitton <spwhitton@HIDDEN>
To: Stefan Monnier <monnier@HIDDEN>, 65092-done <at> debbugs.gnu.org
Subject: Re: bug#65092: 30.0.50; C-h f shows malformed description for vc-mode
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Hello,
Confirmed fixed, thank you.
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Sean Whitton
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From: Eshel Yaron <me@HIDDEN>
To: bug-gnu-emacs@HIDDEN
Subject: 30.0.50; C-h f shows malformed description for vc-mode
Date: Sat, 05 Aug 2023 14:25:11 +0300
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I seems to have stumbled upon an issue with type inference on the master
branch that causes `describe-function` to display the following
malformed description for the function `vc-mode`:
vc-mode is a native-compiled Lisp function in =E2=80=98vc-hooks.el=E2=
=80=99.
(vc-mode &optional ARG)
Inferred type: (function (&optional t) (member Version Control minor
mode. This minor mode is automatically activated whenever you visit a
file under control of one of the revision control systems in
`vc-handled-backends'. VC commands are globally reachable under the
prefix `\[vc-prefix-map]': \{vc-prefix-map}))
Version Control minor mode.
This minor mode is automatically activated whenever you...
To reproduce, do `C-h f vc-mode RET` in `emacs -Q`.
Basically, it looks like the inferred type somehow includes the
function's docstring verbatim:
--8<---------------cut here---------------start------------->8---
(comp-function-type-spec 'vc-mode)
=3D> ((function (&optional t) (member "Version Control minor mode.
This minor mode is automatically activated whenever you visit a file under
control of one of the revision control systems in `vc-handled-backends'.
VC commands are globally reachable under the prefix `\\[vc-prefix-map]':
\\{vc-prefix-map}")) . inferred)
--8<---------------cut here---------------end--------------->8---
In GNU Emacs 30.0.50 (build 3, x86_64-apple-darwin22.5.0, NS
appkit-2299.60 Version 13.4 (Build 22F66)) of 2023-08-03 built on
Dazzs-MBP
Repository revision: 7b30e11b2ac5cd360db7ee8b6aed07bd918b93a2
Repository branch: master
Windowing system distributor 'Apple', version 10.3.2299
System Description: macOS 13.4
Configured using:
'configure 'CFLAGS=3D-g0 -O3' --with-native-compilation --with-json
--with-imagemagick --with-tree-sitter --enable-link-time-optimization'
Configured features:
ACL DBUS GIF GMP GNUTLS IMAGEMAGICK JPEG JSON LCMS2 LIBXML2 MODULES
NATIVE_COMP NOTIFY KQUEUE NS PDUMPER PNG SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XIM ZLIB
Important settings:
value of $LANG: en_US.UTF-8
locale-coding-system: utf-8-unix
Major mode: Help
Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
show-paren-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
tool-bar-mode: t
menu-bar-mode: t
file-name-shadow-mode: t
isearch-fold-quotes-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
buffer-read-only: t
line-number-mode: t
indent-tabs-mode: t
transient-mark-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
Load-path shadows:
None found.
Features:
(shadow sort mail-extr emacsbug message mailcap yank-media puny dired
dired-loaddefs rfc822 mml mml-sec password-cache epa derived epg rfc6068
epg-config gnus-util mm-decode mm-bodies mm-encode mail-parse rfc2231
mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045 ietf-drums
mm-util mail-prsvr mail-utils time-date shortdoc vc-annotate vc-dir ewoc
vc vc-filewise vc-git diff-mode easy-mmode vc-dispatcher compile
text-property-search comint ansi-osc ansi-color ring comp comp-cstr
warnings icons subr-x rx cl-seq cl-macs gv cl-extra bytecomp
byte-compile thingatpt help-fns radix-tree help-mode cl-loaddefs cl-lib
rmc iso-transl tooltip cconv eldoc paren electric uniquify ediff-hook
vc-hooks lisp-float-type elisp-mode mwheel term/ns-win ns-win
ucs-normalize mule-util term/common-win tool-bar dnd fontset image
regexp-opt fringe tabulated-list replace newcomment text-mode lisp-mode
prog-mode register page tab-bar menu-bar rfn-eshadow isearch easymenu
timer select scroll-bar mouse jit-lock font-lock syntax font-core
term/tty-colors frame minibuffer nadvice seq simple cl-generic
indonesian philippine cham georgian utf-8-lang misc-lang vietnamese
tibetan thai tai-viet lao korean japanese eucjp-ms cp51932 hebrew greek
romanian slovak czech european ethiopic indian cyrillic chinese
composite emoji-zwj charscript charprop case-table epa-hook
jka-cmpr-hook help abbrev obarray oclosure cl-preloaded button loaddefs
theme-loaddefs faces cus-face macroexp files window text-properties
overlay sha1 md5 base64 format env code-pages mule custom widget keymap
hashtable-print-readable backquote threads dbusbind kqueue cocoa ns
lcms2 multi-tty make-network-process native-compile emacs)
Memory information:
((conses 16 117625 14245) (symbols 48 8927 0) (strings 32 28340 1637)
(string-bytes 1 843928) (vectors 16 20095)
(vector-slots 8 394629 13087) (floats 8 92 641) (intervals 56 470 0)
(buffers 984 13))
------------=_1741925882-16909-1--
GNU bug tracking system
Copyright (C) 1999 Darren O. Benham,
1997 nCipher Corporation Ltd,
1994-97 Ian Jackson.