On Wed, May 10, 2017 at 3:48 AM, Yongmin H. lists@revi.pe.kr wrote:
Language is hackable via JS but settings like 'set timezone to blah blah, disable VE if it's enabled, disable compact language if enabled, set email to plaintext only, disable xwiki notification, ...' can't be done via JS hack, which is unfortunate.
It probably can, almost[1] anything you can change in Special:Preferences could be changed via something in your global user JS calling the action API's action=options.
The main drawback is that it wouldn't take effect on a wiki until after the first time you visit a page there that loads your global user JS.
[1]: There are a few things like 'realname' and 'emailaddress' that can't be set that way.