Manual:$wgDisableHardRedirects

Page titles and redirects: $wgDisableHardRedirects
Disable redirects to special pages and interwiki redirects, which use a 302 and have no "redirected from" link.
Introduced in version:1.4.1
Removed in version:Still in use
Allowed values:(boolean)
Default value:false

Details

Disable redirects to special pages and interwiki redirects, which use a 302 and have no "redirected from" link.

Interwiki redirects are, in the default configuration, redirects to other wikis via an interwiki prefix set as local (see Manual:Interwiki#Field documentation).