merges r24229 and r24233 from trunk into ruby_1_9_1.

--
 * lib/irb.rb, lib/irb/init.rb, lib/irb/ext/save-history.rb: add
   IRB::irb_at_exit. no use finalizer saving history. [ruby-dev-38563]
--
 * lib/irb.rb: forget svn commit.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@24294 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 3 deletions

diff --git a/lib/irb.rb b/lib/irb.rb
index f5e662ac5..93093dd25 100644
--- a/lib/irb.rb
+++ b/lib/irb.rb
@@ -64,13 +64,21 @@ module IRB
     trap("SIGINT") do
       irb.signal_handle
     end
-    
-    catch(:IRB_EXIT) do
-      irb.eval_input
+
+    begin
+      catch(:IRB_EXIT) do
+	irb.eval_input
+      end
+    ensure
+      irb_at_exit
     end
 #    print "\n"
   end
 
+  def IRB.irb_at_exit
+    @CONF[:AT_EXIT].each{|hook| hook.call}
+  end
+
   def IRB.irb_exit(irb, ret)
     throw :IRB_EXIT, ret
   end