Until your OS patch changes the OS's version of perl (or a library) under the hood, breaking the assumptions made by your application. This happens in large enough organizations where 'the canonical OS platform is X.Y.Z, and all machines must be upgraded to X.Y.Z by this and such date' (yes, it does happen :-/ ). Using your own perl gives one fewer moving part not under your control.
If you are releasing on CPAN, then yes - test far and wide. There are times for both approaches.
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Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
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<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
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Want more info? How to link or
or How to display code and escape characters
are good places to start.
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