I'd like it to print 'Tunnel 1/2 HR PT'. But what I get is 'Part Time No Clockunnel 1/2 HR PPart Time No Clock'.

If your intent is to do no more than one substitution, then you need program logic to return after a substitution has been made. Something like 

  $_[0] =~ s/foo/bar/ && return;

[download]
might be what you're looking for.

By the way, the /o isn't helping you in the slightest.

In reply to Re: Regex Substitution in sub by dws
in thread Regex Substitution in sub by peppiv

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