New submission from John Machin <sjmac...@lexicon.net>: Expected behaviour illustrated using "C":
>>> import re >>> re.findall(r'[\C]', 'CCC') ['C', 'C', 'C'] >>> re.compile(r'[\C]', 128) literal 67 <_sre.SRE_Pattern object at 0x01FC6E78> >>> re.compile(r'C', 128) literal 67 <_sre.SRE_Pattern object at 0x01FC6F08> Incorrect behaviour exhibited by "A" (and by "B" and Z"): >>> re.findall(r'[\A]', 'AAA') [] >>> re.compile(r'A', 128) literal 65 <_sre.SRE_Pattern object at 0x01FC6F98> >>> re.compile(r'[\A]', 128) in at at_beginning_string #### FAIL #### <_sre.SRE_Pattern object at 0x01FDF0B0> >>> Also there is no self-checking at runtime; the switch default has a comment to the effect that nothing can be done, so pretend that the unknown opcode matched nothing. Zen? ---------- messages: 152194 nosy: sjmachin priority: normal severity: normal status: open title: re pattern r"[\A]" should work like "A" but matches nothing. Ditto B and Z. type: behavior versions: Python 2.7, Python 3.2 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13899> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
