GNU bug report logs - #76373
31.0.50; Extend autoconf-mode macro support

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

From: "Basil L. Contovounesios" <basil <at> contovou.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 31.0.50; Extend autoconf-mode macro support
Date: Mon, 17 Feb 2025 22:05:48 +0100

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

The attached patch extends autoconf-mode to:

- also fontify AU_, AX_, and gl_ macro calls as keywords;

- also recognise AH_, AS_, AU_, AX_, LT_, and gl_ macro calls as targets
  for beginning-of-defun, but not an opening square bracket in column 0;

- fontify the first argument of AC_DEFINE, AC_DEFINE_UNQUOTED, AC_SUBST,
  and AH_TEMPLATE with font-lock-variable-name-face instead of
  font-lock-function-name-face;

- also fontify the first argument of AH_VERBATIM, AM_CONDITIONAL, and
  AM_MISSING_PROG as a variable;

- fontify the first argument of AC_DEFUN, AC_DEFUN_ONCE, AU_ALIAS,
  AU_DEFUN, and function-like AC_DEFINE as a function;

- support backslashes, variable substitutions, and command substitutions
  with backticks in the first argument of AC_DEFINE_UNQUOTED; and

- fontify changequote only when it stands freely, not when it is part of
  m4_changequote (where either the whole macro name should be fontified,
  or no part of it).

WDYT?

Also, a question: should defun-prompt-regexp really allow for leading
indentation?  In Autoconf scripts of the form:

if ...

  ...
  AC_MSG_...
  ...
  AC_MSG_...
  ...

fi

it means that beginning-of-defun stops at every indented AC_ or AM_
macro call (and with the attached patch, at any macro call with a known
namespace).

Is this a feature (which allows jumping to the Autoconf parts in a sea
of shell code), or does it break from expected beginning-of-defun
semantics?

Thanks,
-- 
Basil

[0001-Improve-autoconf-mode-macro-detection.patch (text/x-diff, attachment)]

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

In GNU Emacs 31.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.18.2, Xaw3d scroll bars) of 2025-02-16 built on tais
Repository revision: fc189cb83cf7284344a737e75b3ee56487b1c386
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101015
System Description: Debian GNU/Linux trixie/sid

Configured using:
 'configure 'CFLAGS=-Og -ggdb3' -C --prefix=/home/blc/.local
 --enable-checking=structs --without-native-compilation
 --with-file-notification --with-x-toolkit=lucid --with-x'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 M17N_FLT MODULES NOTIFY
INOTIFY PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP X11 XAW3D XDBE XIM XINERAMA XINPUT2
XPM XRANDR LUCID ZLIB

Important settings:
  value of $LANG: en_IE.UTF-8
  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 password-cache epa derived epg rfc6068
epg-config gnus-util text-property-search time-date subr-x mm-decode
mm-bodies mm-encode mail-parse rfc2231 mailabbrev gmm-utils mailheader
cl-loaddefs cl-lib sendmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils 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 x-toolkit
xinput2 x multi-tty move-toolbar make-network-process tty-child-frames
emacs)

Memory information:
((conses 16 39874 9371) (symbols 48 5391 0) (strings 32 13472 1563)
 (string-bytes 1 318133) (vectors 16 9452)
 (vector-slots 8 113642 8578) (floats 8 23 3) (intervals 56 268 0)
 (buffers 992 10))

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