Sorry, but I'm not seeing a problem on Linux. The whole 
perl -ne 'print $_;' | less

[download]
may not work as expected, as this uses stdout, which is buffered. You could use 
perl -ne 'print STDERR $_;' | less

[download]
to get the same behavior, however. When I ^Z either of these from the shell on linux, it gives me the shell prompt, and 'fg' returns me to the process, as expected.

Do you see the same 'stopped' message for the simple case at the end as you do for the 'tin' command?

In reply to Re: weird ctrl-z behaviour when piping from tin through perl by Illuminatus
in thread weird ctrl-z behaviour when piping from tin through perl by Anonymous Monk

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