GNU bug report logs - #63343
30.0.50; generated mode function will error if mode name contains '%'

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From: No Wayman <iarchivedmywholelife <at> gmail.com>
To: 63343 <at> debbugs.gnu.org
Subject: bug#63343: 30.0.50; generated mode function will error if mode name contains '%'
Date: Sat, 06 May 2023 23:46:10 -0400

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

Mode functions generated via `define-minor-mode' will signal an 
error when messaging a mode's "pretty" name contains "%".

To reproduce:

1. eval: (define-minor-mode 100%-failure-mode "oops")
2. enable or disable the mode.

The line responsible for the error is:

(message ,(format "%s %%sabled%%s" pretty-name) 
        (if ,getter "en" "dis") local)))))

The attached patch fixes the issue for me.

[0001-define-minor-mode-sanitize-mode-function-messages.patch (text/x-patch, attachment)]

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

In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ Version
3.24.37, cairo version 1.17.8) of 2023-04-14 built on nbook
Repository revision: dc842a71ed035dab1115f2e67d35dd07410e18be
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 
11.0.12101008
System Description: Arch Linux

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