http://www.perlmonks.org?node_id=1193778


in reply to Re^2: Very Odd Issue When Using pp to Create an .exe File Including Date::Calc
in thread Very Odd Issue When Using pp to Create an .exe File Including Date::Calc

... listing all the use statements on one line vs. separate lines could make the .exe either fail or work respectively with no other difference... very odd to me, since it didn't seem like it should ever matter.

Perl is very hard to parse statically, maybe even impossible (although PPI does a decent job, considering). So quite a few tools resort to doing a simple line-by-line/regex parse of Perl source files to find out simple things, hoping that the authors of the code stuck to some common styles of writing Perl. For example:

Updated: Added a few minor specifics.