freebsd-ports/devel/p5-Devel-Trace/pkg-descr
Mathieu Arnold f3ff6b66c7 Add p5-Devel-Trace 0.10,
Print out each line before it is executed (like sh -x).
2003-10-16 13:02:31 +00:00

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If you run your program with perl -d:Trace program, this module will print a
message to standard error just before each line is executed. For example, if
your program looks like this:
WWW: http://search.cpan.org/dist/Devel-Trace/