Undefined subroutine in perl debugger only on letter [t]

[Kelvin]

Using perl v5.8.7-5 under Cygwin 1.5.24:

I'm trying to use the perl debugger and it terminates whenever I want to 
use the letter 't'.  It's the strangest thing.  When I press 't' 
(without <cr> and only lowercase) I get:

--------------
        Undefined subroutine readline::F_MenuComplete at 
/usr/lib/perl5/vendor_perl/5.8/Term/ReadLine/readline.pm line 1843 at 
/usr/lib/perl5/5.8/SelfLoader.pm line 34
        SelfLoader::AUTOLOAD(1, 116) called at 
/usr/lib/perl5/vendor_perl/5.8/Term/ReadLine/readline.pm line 1843
        readline::do_command('*readline::emacs_keymap', 1, 116) called 
at /usr/lib/perl5/vendor_perl/5.8/Term/ReadLine/readline.pm line 1481
        readline::readline('  DB<2> ') called at 
/usr/lib/perl5/vendor_perl/5.8/Term/ReadLine/Perl.pm line 11
        
Term::ReadLine::Perl::readline('Term::ReadLine::Perl=ARRAY(0x102a75ac)', 
'  DB<2>') called at /usr/lib/perl5/5.8/perl5db.pl line 6367
        DB::readline('  DB<2> ') called at /usr/lib/perl5/5.8/perl5db.pl 
line 2203
        DB::DB called at test1.pl line 3
Debugged program terminated.  Use q to quit or R to restart
--------------

All other letters work on the debugger command line, but as soon as I 
press 't' (anywhere on the line), the debugger instantly fails with the 
above output.  So, it won't let me toggle trace or output variables that 
have a 't' in the name. 

I tried reinstalling and installing previous perl version (v5.8.6-4); no 
luck.

I haven't seen any mention of this as a common problem in the forums and 
mailing lists.  So, I would suspect there is something screwy with my 
installation or I'm missing something embarrassingly obvious.

I'm debugging my code in Linux for the meantime (working around 
references to win32 api).  I would greatly appreciate any assist!

Kelvin


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