For to/about, i'm not convinced, but it's a good point nonetheless. For with/to, a quick search found it to be a preference. The same seems to be true for "inside" and "inside of" (which sounds akin to "between" and "in between".) In the case of PERL/Perl, that seems specific to writing.

In reply to Re^5: poll ideas quest 2015 by chacham
in thread poll ideas quest 2015 by pollsters

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