match: make the FLAG_RE pattern a raw string
PyCharm was complaining about invalid escape sequences since this was added
recently in
3eda36e9b3d6.
--- a/mercurial/match.py Sun Nov 20 15:55:27 2022 -0500
+++ b/mercurial/match.py Tue Nov 22 11:55:26 2022 -0500
@@ -1323,7 +1323,7 @@
return res
-FLAG_RE = util.re.compile(b'^\(\?([aiLmsux]+)\)(.*)')
+FLAG_RE = util.re.compile(br'^\(\?([aiLmsux]+)\)(.*)')
def _regex(kind, pat, globsuffix):