excl -\b-! -\b-z\bz paren -\b-) -\b-z\bz bracket -\b-] -\b-z\bz bar -\b- | -\b-m\bm op paren (-\b-a\ba op bracket
[-\b-a\ba
-OpenBSD August 21, 2014 OpenBSD
+ quoted punctuation: -\b-a\ba (-\b-b\bb | -\b-c\bc) -\b-d\bd, _\bi_\bt_\ba_\bl_\bi_\bc.
+
+ trailing delimiter: -\b-a\ba.\b.
+
+OpenBSD June 9, 2017 OpenBSD