GNU bug report logs - #79219
[PATCH] Insert * on TAB with completion-pcm-leading-wildcard=t

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From: Spencer Baugh <sbaugh <at> janestreet.com>
To: 79219 <at> debbugs.gnu.org
Cc: Stefan Monnier <monnier <at> iro.umontreal.ca>, Dmitry Gutov <dmitry <at> gutov.dev>
Subject: bug#79219: [PATCH] Insert * on TAB with completion-pcm-leading-wildcard=t
Date: Mon, 11 Aug 2025 12:44:12 -0400

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

Tags: patch


Improve completion-pcm-leading-wildcard by actually inserting
a * when try-completion runs.  completion-pcm--merge-try will
automatically remove the wildcard anywhere that it has no
matches, so the * is inserted only where it actually had an
effect.

This makes the behavior more explicit and consistent, and
improves performance in the case where completion-styles is
configured such that we first do partial-completion with
completion-pcm-leading-wildcard=nil, and then fall back to
completion-pcm-leading-wildcard=t: explicitly inserting the *
avoids the need to fallback.

My site has been running with this patch for 4 months now and it's
worked fine.  In my experience it's very useful.

In GNU Emacs 30.1.90 (build 14, x86_64-pc-linux-gnu, X toolkit, cairo
 version 1.15.12, Xaw scroll bars) of 2025-08-11 built on
 igm-qws-u22796a
Repository revision: 2828c98aa29c66798fcb3fa67ccc3ed706024340
Repository branch: emacs-30
Windowing system distributor 'The X.Org Foundation', version 11.0.12011000
System Description: Rocky Linux 8.10 (Green Obsidian)

Configured using:
 'configure --with-x-toolkit=lucid --without-gpm --without-gconf
 --without-gsettings --without-selinux --without-imagemagick
 --with-modules --with-gif=no --with-cairo --with-rsvg
 --without-compress-install --with-tree-sitter
 --with-native-compilation=aot
 PKG_CONFIG_PATH=/usr/local/home/garnish/libtree-sitter/0.22.6-1/lib/pkgconfig/'

[0001-Insert-on-TAB-with-completion-pcm-leading-wildcard-t.patch (text/patch, attachment)]

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