id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
12857	boost::wregex failed for case insensitive expression	Borivoj Kostka <kostka@…>	John Maddock	"Expression

.*\.(?i:(doc|docx))

matching

a.doc
a.DOC
a.docx
a.DOCX

doesn't match a.DOCX but matches all other strings.

If I change the order to

.*\.(?i:(docx|doc))

all strings are matched.

Tested with Visual Studio 2012 and gcc 5.3


"	Bugs	closed	Boost 1.62.0	regex	Boost 1.61.0	Problem	worksforme