Changing :alpha: and :alnum: to char properties #31
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It looks that although the matching regex in hashtags/utils.py support all unicode the SQL, regexes here do not and only
[A-Za-z][A-Za-z0-9]hashtags are this supported by the tool. This attempts to fix it using Unicode character properties as per https://mariadb.com/kb/en/library/pcre/ . Support for this is since MariaDB 10.0.5, so 10.0.33 new replica servers should support it. Unfortunately I cannot test this though, ass52467__new_hashtagstable is not public.I was asked to figure out why https://tools.wmflabs.org/hashtags/search/спецпатруль?lang=uk request does not work. You can use it for testing the patch.