Handle authentication by external provider

[aoeui]

At local mediawiki site the `AutomaticREMOTE USER' plugin is used: https://www.mediawiki.org/wiki/Extension:AutomaticREMOTE_USER. We don't log in at the mediawiki site directly but at Apache prompt that shows up before one can read the mediawiki contents. There are 2 issues:

1. Unluckily mediawiki.el cannot handle this login method correctly. It doesn't matter what password or username are set in mediawiki-site-alist because mediawiki-site will always show the following login prompt "Username [for DOMAIN.LOCAL]: ". Password and username set in mediawiki-site-alist should be used here.

2. After I typed my credentials for the first time in the aforementioned login prompt only "Redaing... done" is shown in echo are and nothing happens. I execute mediawiki-site again, the same login prompt shows up again, I type my credentials again, and finally my mediawiki contents is shown in a separate buffer.

I attach *messages* log.

[Mark A. Hershberger (hexmode)]

The extension you're using uses HTTP Authentication which mediawiki.el does not currently support. I t would be good to have this, though.

[Jason Stanislawski (jason-stanislawski)]

There is a similar bug using Extension:LDAP Authentication. The API login query needs the parameter lgdomain in addition to lgname and lgpassword.