I'm running Mac OS X 10.7.4 and can't reproduce your problem. I tried with both Perl v5.12.3 and Perl v5.14.2 - both produced: 

$ pm_readline_mac.pl
Enter your arithmetic expression: 1+2
3
Enter your arithmetic expression: 8/2
4
Enter your arithmetic expression: exit
$

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The only difference is the text I enter: under 5.12.3 it is emboldened; under 5.14.2 it is not.

To run your code, I simply added the following lines before your code: 

use strict;
use warnings;
use Term::ReadLine;

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I recall that I initially had problems with CPAN prompts. Installing Term::ReadLine::Perl fixed the problem. Unfortunately, that was some time ago and I don't remember the exact nature of the problem; although, I don't recall getting warning messages. In the absence of other solutions, you could try installing Term::ReadLine::Perl if you don't already have it.

When I was first looking at changing to a Mac, I asked: "Are there any major Perl issues with Mac OS X Lion?". I followed advice regarding installing a separate version of Perl: I took the Perlbrew path - others (MacPorts, ActiveState) are also suggested. You may want to consider these options before adding or updating modules used by your system Perl.

-- Ken

In reply to Re: Term ReadLine in OS X by kcott
in thread Term ReadLine in OS X by mightymouse3062

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