https://bugzilla.wikimedia.org/show_bug.cgi?id=17116





--- Comment #4 from Jonathan Eisenstein <[email protected]>  2009-01-22 
03:55:36 UTC ---
If I understand correctly, the result of wfRunHooks() should be the instruction
of whether to continue processing security rules. An extension author can set
the $result to true and return false in order to allow the user to read and
force their extension to be the last word on the matter, according to the
documentation at http://www.mediawiki.org/wiki/Manual:Hooks/userCan. In this
case, there is no way for the extension author to declare that it this
extension has no problem with the user having read access but also allow the
other security code to run. (Even if $result isn't set, an earlier or later
userCan hook might change it.) I believe this turns the original MW access code
using $wgGroupPermissions off, with the only way to re-enable it being to
re-implement it in the extension code.


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