Author: russblau
Description:
http://en.wikipedia.org/w/api.php?action=none results in a text error message:
unknown_action: Unrecognised value for parameter 'action'
To be consistent with the treatment of other errors, it really should return a formatted response (in XML, or JSON, or whatever format has been selected) with an "error" attribute.
Version: unspecified
Severity: normal