I remember having seen it before, but reading through the man page fails to come up with anything. 

perldoc perltidy |grep -i qw
  Trimming whitespace around "qw" quotes
      -tqw or --trim-qw provide the default behavior of trimming space
+s
      around multi-line "qw" quotes and indenting them appropriately.
      -ntqw or --notrim-qw cause leading and trailing whitespace aroun
+d
      multi-line "qw" quotes to be left unchanged. This option will no
+t
      in some versions of perl, trimming "qw" quotes changes the synta
+x
   ssc  st  sts  syn  t    tac tbc toc  tp   tqw  tsc w    x    bar  k
+is
      Perltidy indents but does not reformat comments and "qw" quotes.

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The documentation says it only indents for multi-line qw, so there is no perltidy option for what you want

In reply to Re: Help trying to find a Perltidy option by Anonymous Monk
in thread Help trying to find a Perltidy option by woei

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