Fix bug reported by atkins@gweep.net; re.compile(r"[\100-\410]")    dumps core.  Solution: fix check_escape() to match its comment and    use only the low 8 bits of the octal number.
Fix bug reported by atkins@gweep.net; re.compile(r"[\100-\410]")
   dumps core.  Solution: fix check_escape() to match its comment and
   use only the low 8 bits of the octal number.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator