Please consider replacing
     die "cannot open the file";
with
     die "cannot open file '$file': $!\n";

This will enable you to see what file the user asked for, and why it couldn't be opened.

Obviously this isn't directly associated with you problem, or you would have seen your die. It is, however, a good habit to develop. (Just like use strict; use warnings;)

In reply to Re: find acronyms in a text by apl
in thread find acronyms in a text by steph_bow

Title:
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