lhunath 1174468024 learn Posix Extended Regular Expressions: http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap09.html#tag_09_04
greycat 1319035097 forget
greycat 1319035129 learn Extended Regular Expressions. See http://mywiki.wooledge.org/RegularExpression or (POSIX) http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04
kerframil 1614820730 forget
kerframil 1614820738 learn Extended Regular Expressions. See http://mywiki.wooledge.org/RegularExpression or (POSIX) https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04 or https://man7.org/linux/man-pages/man7/regex.7.html