Option "-2" launches perlcritic with level 2. Levels go from 5 (most pertinent)
to 1. Rules of level 1 are mostly a question of style, and are therefore
ignored.
Signed-off-by: Célestin Matte <celestin.matte@ensimag.fr>
Signed-off-by: Matthieu Moy <matthieu.moy@grenoble-inp.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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