1 files changed, 36 insertions, 36 deletions
diff --git a/ext/tk/lib/tkextlib/tcllib/autoscroll.rb b/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
index d0cb2812cb..34e34046c6 100644
--- a/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
+++ b/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
@@ -32,23 +32,23 @@ module Tk
   module Tcllib
     module Autoscroll
       def self.package_version
-	begin
-	  TkPackage.require('autoscroll')
-	rescue
-	  ''
-	end
+        begin
+          TkPackage.require('autoscroll')
+        rescue
+          ''
+        end
       end
 
       def self.not_available
-	fail RuntimeError, "'tkextlib/tcllib/autoscroll' extension is not available on your current environment."
+        fail RuntimeError, "'tkextlib/tcllib/autoscroll' extension is not available on your current environment."
       end
 
       def self.autoscroll(win)
-	Tk::Tcllib::Autoscroll.not_available
+        Tk::Tcllib::Autoscroll.not_available
       end
 
       def self.unautoscroll(win)
-	Tk::Tcllib::Autoscroll.not_available
+        Tk::Tcllib::Autoscroll.not_available
       end
     end
   end
@@ -59,44 +59,44 @@ module Tk
     def autoscroll(mode = nil)
       case mode
       when :x, 'x'
-	if @xscrollbar
-	  Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar)
-	end
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar)
+        end
       when :y, 'y'
-	if @yscrollbar
-	  Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar)
-	end
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar)
+        end
       when nil, :both, 'both'
-	if @xscrollbar
-	  Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar)
-	end
-	if @yscrollbar
-	  Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar)
-	end
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@xscrollbar)
+        end
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.autoscroll(@yscrollbar)
+        end
       else
-	fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected"
+        fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected"
       end
       self
     end
     def unautoscroll(mode = nil)
       case mode
       when :x, 'x'
-	if @xscrollbar
-	  Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar)
-	end
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar)
+        end
       when :y, 'y'
-	if @yscrollbar
-	  Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar)
-	end
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar)
+        end
       when nil, :both, 'both'
-	if @xscrollbar
-	  Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar)
-	end
-	if @yscrollbar
-	  Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar)
-	end
+        if @xscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@xscrollbar)
+        end
+        if @yscrollbar
+          Tk::Tcllib::Autoscroll.unautoscroll(@yscrollbar)
+        end
       else
-	fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected"
+        fail ArgumentError, "'x', 'y' or 'both' (String or Symbol) is expected"
       end
       self
     end
@@ -130,11 +130,11 @@ module Tk
 
     module Autoscroll
       def self.autoscroll(win)
-	tk_call_without_enc('::autoscroll::autoscroll', win.path)
+        tk_call_without_enc('::autoscroll::autoscroll', win.path)
       end
 
       def self.unautoscroll(win)
-	tk_call_without_enc('::autoscroll::unautoscroll', win.path)
+        tk_call_without_enc('::autoscroll::unautoscroll', win.path)
       end
     end
   end