doc/format-patch: adjust Thunderbird MUA hint to new add-on

There are three tips how to compose a non-line-wrapped patch with Thunderbird. The first one suggests use of an add-on. The one referenced has long been superseded by a different one. Update the link to the new one. Mention that additional configuration is required to make the add-on work. Signed-off-by: Johannes Sixt <j6t@kdbg.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Johannes Sixt committed Aug 22, 2025 at 20:52 UTC 785628b173f167ddce96f12829de56588a850355
1 file changed +9 -3
Documentation/git-format-patch.adoc
+9 -3
@@ -587,13 +587,19 @@ an external editor to keep Thunderbird from mangling the patches.
587 Approach #1 (add-on)
588 ^^^^^^^^^^^^^^^^^^^^
589
590 -Install the Toggle Word Wrap add-on that is available from
591 -https://addons.mozilla.org/thunderbird/addon/toggle-word-wrap/
592 -It adds a menu entry "Enable Word Wrap" in the composer's "Options" menu
590 +Install the Toggle Line Wrap add-on that is available from
591 +https://addons.thunderbird.net/thunderbird/addon/toggle-line-wrap
592 +It adds a button "Line Wrap" to the composer's toolbar
593 that you can tick off. Now you can compose the message as you otherwise do
594 (cut + paste, 'git format-patch' | 'git imap-send', etc), but you have to
595 insert line breaks manually in any text that you type.
596
597 +As a bonus feature, the add-on can detect patch text in the composer
598 +and warns when line wrapping has not yet been turned off.
599 +
600 +The add-on requires a few tweaks of the advanced configuration
601 +(about:config). These are listed on the download page.
602 +
603 Approach #2 (configuration)
604 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
605 Three steps: