$ perl -le " use strict; use warnings; printf qq{%-12s %-12s\n}, @ARGV "
Missing argument in printf at -e line 1.
Missing argument in printf at -e line 1.


$ perl -le " use strict; use warnings; printf qq{%-12s %-12s\n}, @ARGV " what
Missing argument in printf at -e line 1.
what

$ perl -le " use strict; use warnings; printf qq{%-12s %-12s\n}, @ARGV " what what
what         what

$ perl -le " use strict; use warnings; use diagnostics; printf qq{%-12s %-12s\n}, @ARGV "
Missing argument in printf at -e line 1 (#1)
    (W uninitialized) A printf-type format required more arguments than were
    supplied.



$ perl -le " use strict; use warnings; no warnings q{uninitialized}; printf qq{%-12s %-12s\n}, @ARGV "


$ perl -le " use strict; use warnings; no warnings q{uninitialized}; printf qq{%-12s %-12s\n}, @ARGV " oh
oh

$ perl -le " use strict; use warnings; no warnings q{uninitialized}; printf qq{%-12s %-12s\n}, @ARGV " oh yeah
oh           yeah