From 589169cb78ca8dfaaa3d9cacf71dc34bd81265f2 Mon Sep 17 00:00:00 2001
From: hsbt <hsbt@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 15 Apr 2016 11:27:38 +0000
Subject: [PATCH] * lib/irb/ext/save-history.rb: Fix NoMethodError when method
 is not defined.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54596 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog                   | 4 ++++
 lib/irb/ext/save-history.rb | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/ChangeLog b/ChangeLog
index c295e4b3d4..e6fc73fb26 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Apr 15 20:27:16 2016  SHIBATA Hiroshi  <hsbt@ruby-lang.org>
+
+	* lib/irb/ext/save-history.rb: Fix NoMethodError when method is not defined.
+
 Fri Apr 15 15:38:58 2016  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* common.mk (benchmark): order options for built-ruby and compare-ruby.
diff --git a/lib/irb/ext/save-history.rb b/lib/irb/ext/save-history.rb
index d6e9be7415..ab64cf543d 100644
--- a/lib/irb/ext/save-history.rb
+++ b/lib/irb/ext/save-history.rb
@@ -27,7 +27,7 @@ module IRB
       IRB.conf[:SAVE_HISTORY]
     end
 
-    remove_method :save_history=
+    remove_method :save_history= if respond_to?(:save_history=)
     # Sets <code>IRB.conf[:SAVE_HISTORY]</code> to the given +val+ and calls
     # #init_save_history with this context.
     #