Thanks for the change to quotes. That has made it get further.
But the result is then the same as before (when I saved it in a file and ran it from there)
I can run up to **29, but not **30 or **31
**29 takes about 4 seconds.
$ perl -e '$x="x" x 2**31'
panic: string extend at -e line 1.
$ perl -e '$x="x" x 2**30'
panic: string extend at -e line 1.
$ perl -e '$x="x" x **29'
$
So why can't I run **30 or **31?
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