Why? Perl has thanks to variable interpolation a huge flexibility, that's effectively a built in template language. Plus loads of operators to recombine strings.

What's the point overloading the printf formats with more syntax if we can already have it all in a short, expressive and canonical way?

  DB<90> sub format_n { my $n= shift; printf "%b" x $n ." ", splice @_
+, 0, $n while @_ }

  DB<91> format_n 3,(1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0)
101 100 101 010
  DB<92> format_n 4,(1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0)
1011 0010 1010
  DB<93> format_n 5,(1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0)
10110 01010 10000
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(non-destructive version left as exercise)