in reply to Curious behavior of Use

I think a full SSCCE would help here. Also, ensuring the environments of both runs are the same, and optionally making each script print its @INC would help. So would sharing the output of perl -V.

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Re^2: Curious behavior of Use
by geoffleach (Scribe) on Feb 21, 2025 at 23:52 UTC
[reply]
      use Switch;

      Well, that's a likely problem right there. Source filters tend to introduce this sort of trouble. From the FAQ:

      Starting from Perl 5.8, a source filter module, Switch, can also be used to get switch and case. Its use is now discouraged, because it's not fully compatible with the native switch of Perl 5.10, and because, as it's implemented as a source filter, it doesn't always work as intended when complex syntax is involved.

      🦛

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      If you look at that, you'll see it's unreadable. You need to put <c> tags around it. Also, why not just post it on this thread, instead of your scratchpad? It's OK to sanitise it.
[reply]
        Oops. I had no idea -- sorry 'bout that.
[reply]

      That's hardly a minimal demonstration.

      And I can't replicate it. I get the following even if I comment out the require: 

      Use of uninitialized value $me in string eq at t.pl line 19.
Use of uninitialized value $me in string eq at t.pl line 26.
Use of uninitialized value $me in string eq at t.pl line 33.

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