Don't use a regexp, you don't need it and it'll only make things more complicated. Just alter each character individually.

for (0, -1)
  {
    $bar = substr $foo, $_, 1;
    $foo = substr($foo, $_, 1) = uc bar;
  }

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In reply to Re: help with a regexp by diotalevi
in thread help with a regexp by Anonymous Monk

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