From: Trans <transfire@...>
Date: 2008-10-21T01:31:36+09:00
Subject: Re: Best Command Prompt



On Oct 20, 9:33 am, Jens Wille <jens.wi...@uni-koeln.de> wrote:
> hi trans!
>
> Trans [2008-10-20 15:23]:> I've been using wirble which improves irb a bit (although I hate that
> > it doesn't allow duplicate entries in the history --anyone know how to
> > fix?).
>
> i always hated that it would store history entries in oldest-first
> order. so i just copied the code for save_history from wirble.rb
> into my .irbrc and adjusted it accordingly:
>
>   require 'wirble'
>
>   # save history newest-first, instead of default oldest-first
>   class Wirble::History
>     def save_history
>       return unless Object.const_defined? :IRB
>
>       path, max_size, perms = %w{path size perms}.map { |v| cfg(v) }
>
>       # read lines from history, and truncate the list (if necessary)
>       #lines = Readline::HISTORY.to_a.uniq
>       lines = Readline::HISTORY.to_a.reverse.uniq.reverse
>       lines = lines[-max_size..-1] if lines.size > max_size
>
>       # write the history file
>       real_path = File.expand_path(path)
>       File.open(real_path, perms) { |fh| fh.puts lines }
>       say 'Saved %d lines to history file %s.' % [lines.size, path]
>     end
>   end
>
> you could simply change the line that fills the 'lines' array to
> something like this:
>
>       lines = Readline::HISTORY.to_a
>

awesome. thanks jens.

maybe i'll do a little work on wirble to make it more flexible for
variant preferences like ours and post a patch.

t.