As the quote in my signature states, and to paraphrase, don't delete code that looks like it does nothing until you are sure it doesn't. I have opened legacy scripts, spotted what appeared to be useless code, deleted it, and then tried to run it‐setting off all the alarms.
As to your comment about using strict, and while it was impossible in your situation, I find that if it is the second thing I type in my new script, after the shebang, use strict
acts as a mini-debugger right from the get go. Of course, for other debugging chores use CGI::Carp; use warnings, use Data::Dumper
are all indispensible. They will all help help you catch the "bleeding obvious" from the start.
This popular node
has some helpful tips as well.
"Don't ever take a fence down until you know the reason it was put up. " G. K. Chesterton
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