From mboxrd@z Thu Jan  1 00:00:00 1970
From: Julien Lepiller <julien@lepiller.eu>
Subject: bug#36594: No hint for missing argument
Date: Thu, 11 Jul 2019 11:49:45 +0200
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To: 36594@debbugs.gnu.org

When you type an option that requires an argument, but don't provide one, y=
ou get an error message that says there is a missing argument=2E There shou=
ld brobably be a hint on what values are acceptable=2E For instance, there =
is no way to know from "guix package -v" or "guix package --help" what valu=
es are accepted=2E In other cases, there is a --list-something option=2E

Maybe -v is the only case where it would be useful to do something, becaus=
e you could guess its existence and not use a verbosity level=2E Maybe fixi=
ng the help message to say --verbosity=3D[0-5] is enough?