I want to use MIMP with hordeauth. I want to use a single authentication
driver, not composite. I'm doing some things in the postauthenticate hook
that need to always happen. I want all mobile browsers to be redirected
to mimp without the horde sidebar, and all explicit requests for /mimp/...
to get mimp without the sidebar.

I've set horde/mimp/config/conf.php

$conf['user']['alternate_login'] = '/login.php';

to use the root login page.

In horde/mimp/redirect.php, I changed

$imapuser = Util::getPost('imapuser');
$pass = Util::getPost('pass');

to

$imapuser = Auth::getBareAuth();
$pass = Auth::getCredential('password');

Then, in horde/login.php, I modified the application URL selection to be:

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