From: Dr Balwinder S Dheeman <bsd.SANSPAM@...>
Date: 2005-05-10T21:04:31+09:00
Subject: [PATCH] for persistent 'irb' history

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Hi, friends!

Here are two small patches for irb scripts context.rd and 
input-method.rb, apply these if anyone wants to make irb history 
available persistently.

Hope that helps,
-- 
Dr Balwinder Singh Dheeman            Registered Linux User: #229709
CLLO (Chief Linux Learning Officer)   Machines: #168573, 170593, 259192
Anu's Linux@HOME                      Distros: Ubuntu, Fedora, Knoppix
More: http://anu.homelinux.net/~bsd/  Visit: http://counter.li.org/

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--- context.rb.orig	2005-04-11 17:57:27.000000000 +0000
+++ context.rb	2005-05-06 08:16:14.925942484 +0000
@@ -61,6 +61,7 @@
 	if (defined?(ReadlineInputMethod) &&
             (use_readline? || IRB.conf[:PROMPT_MODE] != :INF_RUBY && STDIN.tty?))
 	  @io = ReadlineInputMethod.new
+	  at_exit { @io.finalize }
 	else
 	  @io = StdioInputMethod.new
 	end

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--- input-method.rb.orig	2003-03-23 17:58:43.000000000 +0000
+++ input-method.rb	2005-05-06 08:53:56.185883203 +0000
@@ -90,9 +90,23 @@
 
 	@line_no = 0
 	@line = []
+	@history = File.join(ENV['HOME'],'.irb_history')
+	if File.exists?(@history)
+	  open(@history).readlines.each do |line|
+            HISTORY.push(line.chop)
+	  end
+	end
 	@eof = false
       end
 
+      def finalize
+	history = open(@history,'w')
+	HISTORY.each do |line|
+	  history.printf("%s\n", line)
+	end
+	history.close
+      end
+
       def gets
 	if l = readline(@prompt, true)
 	  HISTORY.pop if l.empty?

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