irb dyamic prompt configuration

[Rob Coeur]

Hi new to ruby here. Currently I am spending alot of time playing around
on irb.
I am able to set up the prompt to my liking with a .irbc file however, I
would like the prompt to update based upon my working directory. A *sh
style prompt like : [hostname:/home/don/scripts].

How can I do this?

thanks

rob

 

[Marcello Barnaba]

Hi,

Hi new to ruby here. Currently I am spending alot of time playing around
on irb.
I am able to set up the prompt to my liking with a .irbc file however, I
would like the prompt to update based upon my working directory. A *sh
style prompt like : [hostname:/home/don/scripts].

How can I do this?

something on the lines of

cwd = Proc.new { Dir.getwd + "| %N(%m):%03n:%i> " }
cwd.instance_eval do alias :dup :call end

IRB::conf[ROMPT][:CWD] = {
ROMPT_C=>nil,
:AUTO_INDENT=>true,
:RETURN=>"%s\n",
ROMPT_I=>cwd,
ROMPT_N=>nil,
ROMPT_S=>nil
}
IRB::conf[ROMPT_MODE] = :CWD

in ~/.irbrc

the key here is that irb calls .dup when building the prompt string (look
in /usr/lib/ruby/1.8/irb.rb at line 265).

HTH