lucy24 - 9:05 pm on May 4, 2013 (gmt 0)
introduce a bug
#1 the [^.] construction occurs within the htaccess packaged with a CMS
#2 the same CMS permits file and/or directory names containing literal periods
#3 the program is not produced or distributed by Microsoft*
one might legitimately speak of a bug in the program. Not in the Regular Expression, in the distribution as a whole.
* Punch line suppressed because everyone already knows it