On Wed, Jun 03, 2026 at 09:45:40PM +0800, Kevin J. McCarthy wrote:
The documentation in autoconf says:— Macro: AC_ARG_WITH(PACKAGE, HELP-STRING, [ACTION-IF-GIVEN], [ACTION-IF-NOT-GIVEN]) If the user gave ‘configure’ the option ‘--with-PACKAGE’ or ‘--without-PACKAGE’, run shell commands ACTION-IF-GIVEN. If neither option was given, run shell commands ACTION-IF-NOT-GIVEN. This means the third parameter is evaluatated in both cases: --with-bundled-regex and --without-bundled-regex. And thus the code was incorrectly turning mutt_cv_regex on for both cases, skipping the broken regex test further below. Fix it to properly set mutt_cv_regex. Further below, configure will check the built-in system regex works if the value is 'no'.
I don't think this is very controversial, so I've pushed it up to master to be included in the 2.4.0 release.
-- Kevin J. McCarthy GPG Fingerprint: 8975 A9B3 3AA3 7910 385C 5308 ADEF 7684 8031 6BDA
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