Re: Is there a non-empty error quine in perl?

I believe this is an example of what you're after:

CORE:: is not a keyword at -e line 1.
[download]

I checked like this which I think follows all your rules (but do advise if that's not the case).

$ perl -e 'CORE:: is not a keyword at -e line 1.
' 1> /dev/null
CORE:: is not a keyword at -e line 1.
$
[download]

[Note: the newline after "line 1." was to match the newline output to stderr.]

Perl version: v5.18.1 built for darwin-thread-multi-2level

-- Ken

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Re^2: Is there a non-empty error quine in perl? by ambrus (Abbot) on Mar 10, 2014 at 06:55 UTC
Nice trick! Congratulations. And it still works if I modify it to run from the stdin from perl. `CORE:: is not a keyword at - line 1.` [download] This works with older versions of perl too, including perl 5.12.3.	[reply] [d/l]
Re^3: Is there a non-empty error quine in perl? by MidLifeXis (Monsignor) on Mar 10, 2014 at 13:56 UTC
And on: `$ /bin/perl -v This is perl, v5.8.8 built for msys` [download] --MidLifeXis	[reply] [d/l]
Re^3: Is there a non-empty error quine in perl? by mr_mischief (Monsignor) on Apr 03, 2014 at 20:20 UTC
and on `# perl -e 'print "$^V\n"' v5.10.1` [download]	[reply] [d/l]