Use inline flags with local scope.

Author: jaraco

docs/conf.py

@@ -14,7 +14,7 @@
                 url='{package_url}/issues/{issue}',
             ),
             dict(
-                pattern=r'^(?m)((?P<scm_version>v?\d+(\.\d+){1,2}))\n[-=]+\n',
+                pattern=r'(?m:^((?P<scm_version>v?\d+(\.\d+){1,2}))\n[-=]+\n)',
                 with_scm='{text}\n{rev[timestamp]:%d %b %Y}\n',
             ),
             dict(