The standard terminal commands has disappeared in irb

ruby-talk
1

Hi.

When I use the irb console the standard terminal key-commands such as
Ctrl+l to clear the screen, ↑ or ↓ to select the previous commands
doesn't work.

What is the reason of this issue? How can I fix it?

Debian GNU/Linux 5.0.3, Ruby 1.9.1, IRB 0.9.5.

Thanks.

···

--
Posted via http://www.ruby-forum.com/.

2

Hi,

···

Am Montag, 14. Sep 2009, 21:12:54 +0900 schrieb P. A.:

When I use the irb console the standard terminal key-commands such as
Ctrl+l to clear the screen, ↑ or ↓ to select the previous commands
doesn't work.

What is the reason of this issue? How can I fix it?

Debian GNU/Linux 5.0.3, Ruby 1.9.1, IRB 0.9.5.

`readline' installed and working?

  $ dpkg -l | grep readline

or

  irb(main):001:0> require "readline"

Bertram

--
Bertram Scharpf
Stuttgart, Deutschland/Germany
http://www.bertram-scharpf.de

3

I have the development package for Readline called libreadline-dev on my
system. I haven't got the Readline Ruby library (no such file to load --
readline (LoadError)). Should I recompile the Ruby with the Readline
extension included? Will irb work then?

···

--
Posted via http://www.ruby-forum.com/.

4

P. A. wrote:

I have the development package for Readline called libreadline-dev on my system. I haven't got the Readline Ruby library (no such file to load -- readline (LoadError)). Should I recompile the Ruby with the Readline extension included? Will irb work then?

Yes, but you don't need to rebuild all of ruby. Just go into ext/readline and run

ruby extconf.rb
make
make install #(as root if needed)

(and you may want to check out the recent thread about .irbrc files for some neat tricks)

···

--
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

5

I've just finished installation the Readline extension using your
instructions. The realine.so library was installed in
<install_dir>/ruby-1.9.1/lib/ruby/site_ruby/1.9.1/i686-linux. I can
require it in simple ruby programs or from `ruby -e "require 'readline'
#=> true"`. Also I can use all the standard command line shortcuts in
the irb console as I wanted. But when I require 'readline' in irb itself
for some reason it returns the false value. Why?

I didn't hear anything about the .irbc files thread. Could you give me
the link, please.

···

--
Posted via http://www.ruby-forum.com/.

6

false doesn't mean it failed it just means it wasn't loaded (in this case it
wasn't loaded because it was already loaded when you started irb).

···

On Mon, Sep 14, 2009 at 11:24 AM, P. A. <shamaoke@hotmail.com> wrote:

I've just finished installation the Readline extension using your
instructions. The realine.so library was installed in
<install_dir>/ruby-1.9.1/lib/ruby/site_ruby/1.9.1/i686-linux. I can
require it in simple ruby programs or from `ruby -e "require 'readline'
#=> true"`. Also I can use all the standard command line shortcuts in
the irb console as I wanted. But when I require 'readline' in irb itself
for some reason it returns the false value. Why?

I didn't hear anything about the .irbc files thread. Could you give me
the link, please.
--
Posted via http://www.ruby-forum.com/\.

--
"Hey brother Christian with your high and mighty errand, Your actions speak
so loud, I can’t hear a word you’re saying."

-Greg Graffin (Bad Religion)

7

P. A. wrote:

I didn't hear anything about the .irbc files thread. Could you give me the link, please.

Sure, here it is. Enjoy!

http://groups.google.com/group/comp.lang.ruby/browse_thread/thread/291843eaacd3f50d

···

--
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407

8

Understood.

Thanks a lot for your help.

···

--
Posted via http://www.ruby-forum.com/.