问题
I used to use Active Perl on my Mac OS X (v 10.7.5) and then I switched to the one provided via mac ports (v 5.12.4).
Now when I run the CPAN client or the perl debugger, I cannot access the history using ArrowUp and ArrowDown, what is shown at the prompt is ^[[A and ^[[B respectively.
At least on the debugger the history works, I can access past commands via !num.
回答1:
By default the only Term::ReadLine handler you get is Term::ReadLine::Perl which is quite simple and doesn't understand things like arrow keys. You probably want to install Term::ReadLine::Gnu.
回答2:
Following on from the answers from LeoNerd and Hakon :- On CentOS 7 I had to run
sudo yum install perl-Term-ReadLine-Gnu
to install the module. Now the arrow keys work in perl -d
回答3:
If you want to avoid installing additional OS libraries (or need to because you don't have root/sudo) you can just use CPAN to grab one of these two Perl implementations of Readline:
- Term::ReadLine::Perl (Perl implementation of Readline libraries)
- Term::Readline::Zoid (Pure Perl implementation of Readline libraries)
It's especially handy if you already have your own local Perl install (eg, using Perlbrew).
回答4:
This is what helped me on Debian stretch
apt install libterm-readline-gnu-perl
回答5:
What I ended up doing was changing the term of my 'Terminal' window to vt100 under the Preferences > Advanced
回答6:
Here's what I had to do to get it working with Cygwin Perl
Install the following Cygwin packages:
libncurses-devel
libreadline-devel
Then install the Term::ReadLine::Gnu module from CPAN
回答7:
For "git for Windows" you can do the following:
From
Ilya Zakharevich's package Term-ReadLine-Perl-1.0303
download the file
Term-ReadLine-Perl-1.0303.tar.gz
extract it with
tar xvzf ../Term-ReadLine-Perl-1.0303.tar.gz
Two files
Term-ReadLine-Perl-1.0303/ReadLine/Perl.pm
Term-ReadLine-Perl-1.0303/ReadLine/readline.pm
have to be copied typically with admin rights into the directory
C:/Program Files/Git/usr/share/perl5/site_perl/Term/ReadLine/
resulting in the two files
C:/Program Files/Git/usr/share/perl5/site_perl/Term/ReadLine/Perl.pm and
C:/Program Files/Git/usr/share/perl5/site_perl/Term/ReadLine/readline.pm
Afterwards you can use the cursor keys inside the perl debugger, for instance inside a "perl -de 0" session.
In the 64 bit git for Windows SDK, you usually have to copy the two files into directory
C:/git-sdk-64/usr/share/perl5/site_perl/Term/ReadLine
来源：https://stackoverflow.com/questions/13783334/arrow-up-and-down-does-not-work-any-more-in-perl-debugger-and-cpan-client