Source filters are generally problematic because they have to implement a parser for (parts of) Perl in Perl and usually do a bad job of this. Most of the time they work and when they fail it will take you a long time to track down the cause, unless you already know to look for tell-tale signs like the line use Switch;.

If you're lucky, the filter implements a very limited language, like Querylet does and possibly Smart::Comments does as well.

In reply to Re^3: Module implementing modified comment-style debugging. by Corion
in thread Module implementing modified comment-style debugging. by Socrates

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