Aha! Here is the explanation.

Two days ago I was working on this bug report: RT 130445. In the course of that work, I created this hidden file in the original directory: 

$ ack 'db\.out' .
.perldb
1:&parse_options("NonStop=0 TTY=db.out");

[download]
So when I ran the perl debugger over any program from that directory, it was silently processing '.perldb' and setting the 'NonStop' option and redirecting legitimate output to a file in that directory called 'db.out'.

Once I deleted '.perldb', the output of perl -d abc.pl returned to normal.

Thank you very much.

Jim Keenan

In reply to Re^3: perl -d: puzzling behavior when run in program in current directory by jkeenan1
in thread perl -d: puzzling behavior when run in program in current directory by jkeenan1

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