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[Omaha.pm] 'perl -d' |x hangs when quitting until 'export PERL_RL=1'

I don't know why, but I just ran into another box where |x hangs when
you try to leave it when pager is |less. 

------------------
$ perl -d -e 1

Loading DB routines from perl5db.pl version 1.23
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(-e:1):   1
auto(-1)  DB<1>

  DB<1> o pager?
               pager = '|less'
  DB<2> |x $j
------------------

The less screen pops up, you hit 'q' to exit it, and then you're hung.
Nothing but Control-\ does anything.

export PERL_RL=1

and then everything works fine. I have no idea why.

j