Not sure if this is an actual issue, I just noticed it when going through some of the docs.
At https://secure.phabricator.com/book/phabdev/class/PhabricatorCommonPasswords/#method/loadWordlist you will notice the return type is `map<string,` with the rest of the declared return type as the description, I haven't looked at how this is generated, but im assuming that it explodes/splits on whitespace.
Not sure if this needs to be resolved or anything, just thought I would mention it.
Original source: https://secure.phabricator.com/diffusion/P/browse/master/src/applications/auth/constants/PhabricatorCommonPasswords.php;c0e15f2c6587d68bdc894d365fe0a8ddc04bde6f$37 where you can see the stated return type is ` map<string, bool>`