If I try to calculate the result of applying ccnorm to a long string (e.g. 9000 x 'a', or a typical value of the added_lines variable), I get the message "An unknown error occurred." but there is more information in the console:
"mw.Api error: " "http" Object { xhr: Object, textStatus: "error", exception: "Request-URI Too Large" }
My suggestion is to provide a more informative message for the user in this case.
Version: unspecified
Severity: normal
Change 150080 had a related patch set uploaded by Helder.wiki:
Use POST method for action=abusefilterevalexpression API requests
Change 150080 merged by jenkins-bot:
Use POST method for action=abusefilterevalexpression API requests
We need a little more. The previous patch just avoid that specific HTTP error from happening, but there could be others, and it would be useful to expose the exact information to the user if it is available. I'll submit another patch in a few minutes.
Change 150557 had a related patch set uploaded by Helder.wiki:
Improve error handling for HTTP requests