The example you've added makes very little sense; all you've done is reimplemented Perl's built-in "remove logical line ending" operator (chomp) in a less flexible way (yours won't work on a LIST of lines, nor will it work nicely on lvalues) with a nastier calling convention (leaving aside the matter of what you think $$_ would do).
At this point I think I'm just going to have to mutter "It's the eponymy, stupid" to myself and just leave the thread.
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