Add opposites for commandline flags
As a general principle, every commandline flag should have a corresponding opposite so that it's possible to override it in a later part of the argv. Another use case is ghci (e.g. undo the effect of :set -ddump-splices
; currently :unset
doesn't work).
At the moment, this is missing for many flags (-debug
, -ddump-cmm
, -dcore-lint
, -dno-typeable-binds
etc.). This ticket is about performing a systematic review.