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Subject: bug#61457: 30.0.50; compiler falsely complains missing =?UTF-8?Q?=E2=80=98describe-char-display=E2=80=99?=
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Hi,
when running ‘M-x byte-compile-file RET’ with the following form in it,
---
(describe-char-display (point) (char-after))
---
compiler complains:
---
In end of data:
foo.el:6831:17: Warning: the function ‘describe-char-display’ is not known
to be defined.
---
Whereas ‘M-x describe-function RET’ tells correctly:
---
describe-char-display is a byte-compiled Lisp function in
‘descr-text.el’.
(describe-char-display POS CHAR)
---
In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.33, cairo version 1.16.0) of 2023-02-01
Repository revision: 0214e9021b4dbbda1b6040e3b692f29d77a3b8cc
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101003
System Description: Ubuntu 22.04.1 LTS
Configured using:
'configure --with-tree-sitter --with-modules'
Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GSETTINGS HARFBUZZ JPEG
LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 MODULES NOTIFY INOTIFY PDUMPER PNG
RSVG SECCOMP SOUND THREADS TIFF TOOLKIT_SCROLL_BARS TREE_SITTER X11 XDBE
XIM XINPUT2 XPM GTK3 ZLIB
Important settings:
value of $LANG: de_DE.UTF-8
value of $XMODIFIERS: @im=ibus
locale-coding-system: utf-8-unix
Major mode: elisp-compile
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
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 time-date subr-x mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils cl-macs gv skeleton
warnings icons byte-opt compile text-property-search comint ansi-osc
ansi-color ring bytecomp byte-compile thingatpt help-fns radix-tree
help-mode misearch multi-isearch cl-loaddefs cl-lib vc-filewise vc-rcs
log-view easy-mmode pcvs-util rmc iso-transl tooltip cconv eldoc paren
electric uniquify ediff-hook vc-hooks lisp-float-type elisp-mode mwheel
term/x-win x-win term/common-win x-dnd 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 inotify
dynamic-setting system-font-setting font-render-setting cairo
move-toolbar gtk x-toolkit xinput2 x multi-tty make-network-process
emacs)
Memory information:
((conses 16 110592 10249)
(symbols 48 19695 0)
(strings 32 42795 2186)
(string-bytes 1 841929)
(vectors 16 13559)
(vector-slots 8 189901 19612)
(floats 8 44 29)
(intervals 56 1814 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: Andreas =?UTF-8?Q?R=C3=B6hler?= <andreas.roehler@HIDDEN> Subject: bug#61457: Acknowledgement (30.0.50; compiler falsely complains missing =?UTF-8?Q?=E2=80=98describe-char-display=E2=80=99?=) Message-ID: <handler.61457.B.167622811520126.ack <at> debbugs.gnu.org> References: <5cf61ba2-a91b-45f9-97d9-de86ded3a487@HIDDEN> X-Gnu-PR-Message: ack 61457 X-Gnu-PR-Package: emacs Reply-To: 61457 <at> debbugs.gnu.org Date: Sun, 12 Feb 2023 18:56:02 +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 61457 <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 61457: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D61457 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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Subject: bug#61457: 30.0.50; compiler falsely complains missing =?UTF-8?Q?=E2=80=98describe-char-display=E2=80=99?=
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> Date: Sun, 12 Feb 2023 19:55:08 +0100
> From: Andreas Röhler <andreas.roehler@HIDDEN>
>
> when running ‘M-x byte-compile-file RET’ with the following form in it,
>
> ---
> (describe-char-display (point) (char-after))
> ---
>
> compiler complains:
>
> ---
> In end of data:
> foo.el:6831:17: Warning: the function ‘describe-char-display’ is not known
> to be defined.
Which is correct: you need to (require 'descr-text).
> Whereas ‘M-x describe-function RET’ tells correctly:
>
> ---
> describe-char-display is a byte-compiled Lisp function in
> ‘descr-text.el’.
>
> (describe-char-display POS CHAR)
Which is also correct.
So what is it that you are complaining about here?
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Subject: bug#61457: 30.0.50; compiler falsely complains missing =?UTF-8?Q?=E2=80=98describe-char-display=E2=80=99?=
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Don't understand why `symbol-function' of `help-fns--analyze-function'
knows about it, but compiler and REPL not.
Am 12.02.23 um 20:21 schrieb Eli Zaretskii:
>> Date: Sun, 12 Feb 2023 19:55:08 +0100
>> From: Andreas Röhler <andreas.roehler@HIDDEN>
>>
>> when running ‘M-x byte-compile-file RET’ with the following form in it,
>>
>> ---
>> (describe-char-display (point) (char-after))
>> ---
>>
>> compiler complains:
>>
>> ---
>> In end of data:
>> foo.el:6831:17: Warning: the function ‘describe-char-display’ is not known
>> to be defined.
> Which is correct: you need to (require 'descr-text).
>
>> Whereas ‘M-x describe-function RET’ tells correctly:
>>
>> ---
>> describe-char-display is a byte-compiled Lisp function in
>> ‘descr-text.el’.
>>
>> (describe-char-display POS CHAR)
> Which is also correct.
>
> So what is it that you are complaining about here?
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> Date: Mon, 13 Feb 2023 09:51:45 +0100
> Cc: 61457 <at> debbugs.gnu.org
> From: Andreas Röhler <andreas.roehler@HIDDEN>
>
> Don't understand why `symbol-function' of `help-fns--analyze-function'
> knows about it, but compiler and REPL not.
The Help command only knows about its signature and doc string.
Stefan, any comments?
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> Don't understand why `symbol-function' of `help-fns--analyze-function' kn=
ows
> about it, but compiler and REPL not.
I believe you're confused:
ELISP> (symbol-function 'describe-char-display)
nil
ELISP> (help-fns--analyze-function 'describe-char-display)
*** Eval error *** Symbol=E2=80=99s function definition is void: descr=
ibe-char-display
ELISP>=20
My crystal ball suggests you have tested these in an Emacs where
`descr-text` happened to be loaded already.
Stefan
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> From: Stefan Monnier <monnier@HIDDEN>
> Cc: Eli Zaretskii <eliz@HIDDEN>, 61457 <at> debbugs.gnu.org
> Date: Mon, 13 Feb 2023 14:10:29 -0500
>
> > Don't understand why `symbol-function' of `help-fns--analyze-function' knows
> > about it, but compiler and REPL not.
>
> I believe you're confused:
>
> ELISP> (symbol-function 'describe-char-display)
> nil
> ELISP> (help-fns--analyze-function 'describe-char-display)
> *** Eval error *** Symbol’s function definition is void: describe-char-display
> ELISP>
>
> My crystal ball suggests you have tested these in an Emacs where
> `descr-text` happened to be loaded already.
No, "C-h f describe-char-display RET" loads descr-text.
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>> > Don't understand why `symbol-function' of `help-fns--analyze-function'=
knows
>> > about it, but compiler and REPL not.
>>=20
>> I believe you're confused:
>>=20
>> ELISP> (symbol-function 'describe-char-display)
>> nil
>> ELISP> (help-fns--analyze-function 'describe-char-display)
>> *** Eval error *** Symbol=E2=80=99s function definition is void: de=
scribe-char-display
>> ELISP>=20
>>=20
>> My crystal ball suggests you have tested these in an Emacs where
>> `descr-text` happened to be loaded already.
>
> No, "C-h f describe-char-display RET" loads descr-text.
`C-h f` is not the same as `symbol-function` or
`help-fns--analyze-function`. You're just seeing
`help-enable-auto-load` in action.
Stefan
X-Loop: help-debbugs@HIDDEN
Subject: bug#61457: 30.0.50; compiler falsely complains missing =?UTF-8?Q?=E2=80=98describe-char-display=E2=80=99?=
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> From: Stefan Monnier <monnier@HIDDEN>
> Cc: andreas.roehler@HIDDEN, 61457 <at> debbugs.gnu.org
> Date: Mon, 13 Feb 2023 16:01:10 -0500
>
> >> > Don't understand why `symbol-function' of `help-fns--analyze-function' knows
> >> > about it, but compiler and REPL not.
> >>
> >> I believe you're confused:
> >>
> >> ELISP> (symbol-function 'describe-char-display)
> >> nil
> >> ELISP> (help-fns--analyze-function 'describe-char-display)
> >> *** Eval error *** Symbol’s function definition is void: describe-char-display
> >> ELISP>
> >>
> >> My crystal ball suggests you have tested these in an Emacs where
> >> `descr-text` happened to be loaded already.
> >
> > No, "C-h f describe-char-display RET" loads descr-text.
>
> `C-h f` is not the same as `symbol-function` or
> `help-fns--analyze-function`. You're just seeing
> `help-enable-auto-load` in action.
If you read the OP, it was "C-h f" that Andreas used, AFAIU.
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