GNU bug report logs - #80145
30.2; rcirc: rcirc-set-encode-coding-system wrongly set as obsolete

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

From: Kana <kana <at> iroiro.party>
To: bug-gnu-emacs <at> gnu.org
Subject: 30.2; rcirc: rcirc-set-encode-coding-system wrongly set as obsolete
Date: Tue, 6 Jan 2026 18:55:27 +0800

--text follows this line--

I was using `mapatom' to explore symbols on my Emacs when I found
`rcirc-set-encode-coding-system' was aliased to
`set-rcirc-encode-coding-system', whose `symbol-function' is nil.
This is reproducible with `emacs -Q':

    (require 'rcirc)
    rcirc
    (symbol-function 'rcirc-set-encode-coding-system)
    set-rcirc-encode-coding-system
    (symbol-function 'set-rcirc-encode-coding-system)
    nil

Digging into the source code, it seems rcirc.el has misplaced the two
arguments to `define-obsolete-function-alias':

    (define-obsolete-function-alias
      'rcirc-set-encode-coding-system
      'set-rcirc-encode-coding-system
      "28.1")

(Similarly, `rcirc-set-decode-coding-system' also seems wrongly
aliased.)



In GNU Emacs 30.2 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.50,
cairo version 1.18.4)
Windowing system distributor 'The X.Org Foundation', version 11.0.12101020
System Description: EndeavourOS

Configured using:
'configure --with-x-toolkit=gtk3 --sysconfdir=/etc --prefix=/usr
--libexecdir=/usr/lib --localstatedir=/var --disable-build-details
--with-cairo --with-harfbuzz --with-libsystemd --with-modules
--with-native-compilation=aot --with-tree-sitter 'CFLAGS=-march=x86-64
-mtune=generic -O2 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=3
-Wformat -Werror=format-security -fstack-clash-protection
-fcf-protection -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -g
-ffile-prefix-map=/build/emacs/src=/usr/src/debug/emacs -flto=auto'
'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro
-Wl,-z,now -Wl,-z,pack-relative-relocs -flto=auto''

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB

Important settings:
value of $LC_MONETARY: en_US.UTF-8
value of $LC_NUMERIC: en_US.UTF-8
value of $LC_TIME: en_US.UTF-8
value of $LANG: en_US.UTF-8
value of $XMODIFIERS: @im=fcitx
locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
tooltip-mode: t
global-eldoc-mode: t
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
minibuffer-regexp-mode: 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 epa derived epg rfc6068 epg-config
gnus-util text-property-search mm-decode mm-bodies mm-encode mail-parse
rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
ietf-drums mm-util mail-prsvr mail-utils rcirc parse-time iso8601
auth-source cl-seq eieio eieio-core cl-macs icons password-cache json
map byte-opt gv bytecomp byte-compile time-date subr-x ring cl-loaddefs
cl-lib 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 touch-screen 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 lcms2 dynamic-setting system-font-setting
font-render-setting cairo gtk x-toolkit xinput2 x multi-tty move-toolbar
make-network-process native-compile emacs)

Memory information:
((conses 16 76502 9352) (symbols 48 7208 0) (strings 32 20587 3097)
(string-bytes 1 631014) (vectors 16 13385)
(vector-slots 8 173347 7291) (floats 8 26 9) (intervals 56 310 13)
(buffers 992 11))

Message #8 received at 80145 <at> debbugs.gnu.org (full text, mbox):

From: Philip Kaludercic <philipk <at> posteo.net>
To: Kana <kana <at> iroiro.party>
Cc: 80145 <at> debbugs.gnu.org
Subject: Re: bug#80145: 30.2; rcirc: rcirc-set-encode-coding-system wrongly
 set as obsolete
Date: Wed, 07 Jan 2026 10:21:10 +0000

[Message part 1 (text/plain, inline)]

Kana <kana <at> iroiro.party> writes:

> --text follows this line--
>
> I was using `mapatom' to explore symbols on my Emacs when I found
> `rcirc-set-encode-coding-system' was aliased to
> `set-rcirc-encode-coding-system', whose `symbol-function' is nil.
> This is reproducible with `emacs -Q':
>
>     (require 'rcirc)
>     rcirc
>     (symbol-function 'rcirc-set-encode-coding-system)
>     set-rcirc-encode-coding-system
>     (symbol-function 'set-rcirc-encode-coding-system)
>     nil
>
> Digging into the source code, it seems rcirc.el has misplaced the two
> arguments to `define-obsolete-function-alias':
>
>     (define-obsolete-function-alias
>       'rcirc-set-encode-coding-system
>       'set-rcirc-encode-coding-system
>       "28.1")
>
> (Similarly, `rcirc-set-decode-coding-system' also seems wrongly
> aliased.)

Hi, thank you for reporting this, this has been a mistake!

[Message part 2 (text/x-patch, inline)]

diff --git a/lisp/net/rcirc.el b/lisp/net/rcirc.el
index c669d45a0bd..0ae7e53a7fa 100644
--- a/lisp/net/rcirc.el
+++ b/lisp/net/rcirc.el
@@ -1339,8 +1339,8 @@ rcirc-set-decode-coding-system
   (setq-local rcirc-decode-coding-system coding-system))
 
 (define-obsolete-function-alias
-  'rcirc-set-decode-coding-system
   'set-rcirc-decode-coding-system
+  'rcirc-set-decode-coding-system
   "28.1")
 
 (defun rcirc-set-encode-coding-system (coding-system)
@@ -1349,8 +1349,8 @@ rcirc-set-encode-coding-system
   (setq-local rcirc-encode-coding-system coding-system))
 
 (define-obsolete-function-alias
-  'rcirc-set-encode-coding-system
   'set-rcirc-encode-coding-system
+  'rcirc-set-encode-coding-system
   "28.1")
 
 (defun rcirc-format (pre &optional replace)

[Message part 3 (text/plain, inline)]

should fix it, but I am weary to "fix" obsoletion declarations like this
3+ years after they have been released.  Instead, this might be a good
opportunity to get rid of the aliases, seeing as their absence has
evidently not been an issue for the past few years. 

> In GNU Emacs 30.2 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.50,
> cairo version 1.18.4)
> Windowing system distributor 'The X.Org Foundation', version 11.0.12101020
> System Description: EndeavourOS
>
> Configured using:
> 'configure --with-x-toolkit=gtk3 --sysconfdir=/etc --prefix=/usr
> --libexecdir=/usr/lib --localstatedir=/var --disable-build-details
> --with-cairo --with-harfbuzz --with-libsystemd --with-modules
> --with-native-compilation=aot --with-tree-sitter 'CFLAGS=-march=x86-64
> -mtune=generic -O2 -pipe -fno-plt -fexceptions -Wp,-D_FORTIFY_SOURCE=3
> -Wformat -Werror=format-security -fstack-clash-protection
> -fcf-protection -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -g
> -ffile-prefix-map=/build/emacs/src=/usr/src/debug/emacs -flto=auto'
> 'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro
> -Wl,-z,now -Wl,-z,pack-relative-relocs -flto=auto''
>
> Configured features:
> ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
> LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
> INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
> TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM GTK3 ZLIB
>
> Important settings:
> value of $LC_MONETARY: en_US.UTF-8
> value of $LC_NUMERIC: en_US.UTF-8
> value of $LC_TIME: en_US.UTF-8
> value of $LANG: en_US.UTF-8
> value of $XMODIFIERS: @im=fcitx
> locale-coding-system: utf-8-unix
>
> Major mode: Lisp Interaction
>
> Minor modes in effect:
> tooltip-mode: t
> global-eldoc-mode: t
> 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
> minibuffer-regexp-mode: 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 epa derived epg rfc6068 epg-config
> gnus-util text-property-search mm-decode mm-bodies mm-encode mail-parse
> rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047 rfc2045
> ietf-drums mm-util mail-prsvr mail-utils rcirc parse-time iso8601
> auth-source cl-seq eieio eieio-core cl-macs icons password-cache json
> map byte-opt gv bytecomp byte-compile time-date subr-x ring cl-loaddefs
> cl-lib 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 touch-screen 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 lcms2 dynamic-setting system-font-setting
> font-render-setting cairo gtk x-toolkit xinput2 x multi-tty move-toolbar
> make-network-process native-compile emacs)
>
> Memory information:
> ((conses 16 76502 9352) (symbols 48 7208 0) (strings 32 20587 3097)
> (string-bytes 1 631014) (vectors 16 13385)
> (vector-slots 8 173347 7291) (floats 8 26 9) (intervals 56 310 13)
> (buffers 992 11))

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