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Change #1289358 had a related patch set uploaded (by Chad_dewey; author: Chad_dewey):

[mediawiki/core@master] Add 'Prefs' to special page aliases for 'Preferences'

https://gerrit.wikimedia.org/r/1289358

Brand-new contributor here, please let me know if I did anything wrong :)

Patch is fine technically. I, however, question the value of adding more and more special page aliases ...