1 files changed, 19 insertions, 19 deletions
diff --git a/ext/tk/sample/bindtag_sample.rb b/ext/tk/sample/bindtag_sample.rb
index 8c93b4a260..b13364bb68 100644
--- a/ext/tk/sample/bindtag_sample.rb
+++ b/ext/tk/sample/bindtag_sample.rb
@@ -2,18 +2,18 @@
 require 'tk'
 
 TkLabel.new(:text=><<EOT, :justify=>:left).pack
-This is a sample of bindtags and usage of 
-Tk.callback_break/Tk.callback_continue. 
-Please check the work of following buttons 
-(attend the difference between before/after 
- pressing the bottom button), and see the 
+This is a sample of bindtags and usage of
+Tk.callback_break/Tk.callback_continue.
+Please check the work of following buttons
+(attend the difference between before/after
+ pressing the bottom button), and see the
 source code.
 EOT
 
 def set_class_bind
-  TkButton.bind('ButtonPress-1', 
+  TkButton.bind('ButtonPress-1',
                 proc{puts 'bind "ButtonPress-1" of TkButton class'})
-  TkButton.bind('ButtonRelease-1', 
+  TkButton.bind('ButtonRelease-1',
                 proc{puts 'bind "ButtonRelease-1" of TkButton class'})
 end
 
@@ -23,21 +23,21 @@ r.bind('ButtonPress-1',   proc{puts 'bind "ButtonPress-1" of root widget'})
 r.bind('ButtonRelease-1', proc{puts 'bind "ButtonRelease-1" of root widget'})
 
 # set 'all' binding
-TkBindTag::ALL.bind('ButtonPress-1', 
+TkBindTag::ALL.bind('ButtonPress-1',
                     proc{puts 'bind "ButtonPress-1" of the tag "all"'})
-TkBindTag::ALL.bind('ButtonRelease-1', 
+TkBindTag::ALL.bind('ButtonRelease-1',
                     proc{puts 'bind "ButtonRelease-1" of the tag "all"'})
 
 # create buttons
-b1 = TkButton.new(:text=>'button-1', 
+b1 = TkButton.new(:text=>'button-1',
                   :command=>proc{puts "command of button-1"}).pack
-b2 = TkButton.new(:text=>'button-2', 
+b2 = TkButton.new(:text=>'button-2',
                   :command=>proc{puts "command of button-2"}).pack
-b3 = TkButton.new(:text=>'button-3', 
+b3 = TkButton.new(:text=>'button-3',
                   :command=>proc{puts "command of button-3"}).pack
-b4 = TkButton.new(:text=>'button-4', 
+b4 = TkButton.new(:text=>'button-4',
                   :command=>proc{puts "command of button-4"}).pack
-b5 = TkButton.new(:text=>'button-5', 
+b5 = TkButton.new(:text=>'button-5',
                   :command=>proc{puts "command of button-5"}).pack
 
 # set button binding
@@ -62,14 +62,14 @@ tag1.bind('ButtonPress-1',   proc{puts 'bind "ButtonPress-1" of tag1'})
 tag1.bind('ButtonRelease-1', proc{puts 'bind "ButtonRelease-1" of tag1'})
 
 tag2 = TkBindTag.new
-tag2.bind('ButtonPress-1',   
+tag2.bind('ButtonPress-1',
           proc{
             puts 'bind "ButtonPress-1" of tag2'
             puts 'call Tk.callback_continue'
             Tk.callback_continue
             puts 'never see this message'
           })
-tag2.bind('ButtonRelease-1', 
+tag2.bind('ButtonRelease-1',
           proc{
             puts 'bind "ButtonRelease-1" of tag2'
             puts 'call Tk.callback_continue'
@@ -78,14 +78,14 @@ tag2.bind('ButtonRelease-1',
           })
 
 tag3 = TkBindTag.new
-tag3.bind('ButtonPress-1',   
+tag3.bind('ButtonPress-1',
           proc{
             puts 'bind "ButtonPress-1" of tag3'
             puts 'call Tk.callback_break'
             Tk.callback_break
             puts 'never see this message'
           })
-tag3.bind('ButtonRelease-1', 
+tag3.bind('ButtonRelease-1',
           proc{
             puts 'bind "ButtonRelease-1" of tag3'
             puts 'call Tk.callback_break'
@@ -117,7 +117,7 @@ p b4.bindtags
 b5.bindtags([tag1, TkButton, tag2, b5])
 
 # create button to set button class binding
-TkButton.new(:text=>'set binding to TkButton class', 
+TkButton.new(:text=>'set binding to TkButton class',
              :command=>proc{
                puts 'call "set_class_bind"'
                set_class_bind