automatically runs a fandom-specific tag search over all your assigned fandoms, to find any canonicals with 'illegal' characters such as curly quotes or Chinese pipes
Purpose: Some special characters from Unicode ‘’“”｜–—―（） look very much like ASCII to the naked eye. They should not be used in canonicals. Also, two apostrophes instead of a double-quote are bad practice. This script helps you find the canonicals that need fixing in your bins.
Instructions: Based on a tag search query that finds any canonical tags with "illegal" characters, this script trawls through each of your assigned fandoms individually. You'll only see results that YOU can fix!
Note 1: the button only appears on an empty tag search. Once you searched for something, the button does not appear anymore to avoid clicking it by accident in the course of regular wrangling.
Note 2: Works both with a vanilla tag search, or when you have the All Buttons on All Pages script enabled - the button appears at the end of the configured buttons.
Note 3: The background checking is deliberately slow, to avoid getting rate limited. It waits for 3sec between fandoms.
Alternative: If you set the configuration option COPY_SEARCH_STRING at the beginning (line 15) to true, the button will only give you the search string, which will find all those illegal characters. Then you can manually choose the fandom and tag type, and search one at a time.
