@phl I wonder if that error message is an issue. I wouldn't expect it to work anyway, because pop really expects an array, as it has to modify it. I don't think it can do that with the list split generates.
That is, it seems more in the category of "Can't modify constant item" than "Experimental pop on scalar" ... and I don't think it's the context.
1> pop split /bla/, $str
Experimental pop on scalar is now forbidden
May 6, 2026, 10:49 AM@fuzzix Good point. I guess the can't modify constant item one would be more appropriate (although also somewhat confusing :D)
And yeah, here's me confusing lists with arrays 25+ years into the Perl world still :D It's I guess a bit of a footgun.
@phl Just tried out perl 5.12 (the version before experimental "Array and hash container functions accept references") and got a much more helpful message:
$ perl -E 'my $str="fooblabar"; pop split(/bla/, $str);'
Type of arg 1 to pop must be array (not split) ...
May 6, 2026, 11:53 AM@fuzzix Oh yes, that really is much better.