To extend what ikegami said above-

substitute returns true/false and not the changed string even in map

Substitute does not return true/false. It returns the count of substitutions performed. 

perl -le '$str = "A.B.C."; $x = $str =~ s/\w//g; print $x'
3 # or a "1" without the "g."

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In reply to Re: Little annoying mistakes ... of others by Your Mother
in thread Little annoying mistakes ... of others by szabgab

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