Re: [PATCH] regex: not all macOS platforms seem to have REG_ENHANCED

From: René Scharfe <l.s.r@web.de>
Date: Mar 19, 2026, 23:11 UTC
Message-ID: <6cd35848-a234-40dc-bb87-4c2cb7eff52c@web.de>
In-Reply-To: <xmqq8qbnigxp.fsf@gitster.g>

On 3/19/26 11:37 PM, Junio C Hamano wrote:

Show 5 quoted lines

> Earlier, 54463d32 (use enhanced basic regular expressions on macOS,
> 2023-01-08) started to use the REG_ENHANCED option when ERE is not
> in use on macOS.  The build seems to have started failing on
> macos-14 CI jobs at GitHub, however, as apparently not all the macOS
> platforms have this flag defined.

Interesting. https://en.wikipedia.org/wiki/MacOS_version_history says macOS 14 (Sonoma) was released 2023-09-26, i.e. more than eight months after the patch. And the oldest regex(3) man page I could find also mentions REG_ENHANCED:

https://man.freebsd.org/cgi/man.cgi?query=regex&apropos=0&sektion=0&manpath=macOS+10.12.0&format=html

René