demerphq <demerphq@xxxxxxxxx> writes: > ... I saw some discussion > recently that the mac regex engine doesn't play nicely in certain > ways, but i dont recollect the details. There was a discussion on BRE having and not having GNU-like extension on macOS, in this thread https://lore.kernel.org/git/26a0d4ca-3d97-ace4-1a1f-92b1ee6715a6@xxxxxx/ The patch we ended up using avoids touching the behaviour with ERE, as REG_ENHANCED on macOS affects REG_EXTENDED, but the issue we were looking at in the thread was about BRE.
