* {ext,lib,test}/**/*.rb: removed trailing spaces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@22784 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

19 files changed, 128 insertions, 128 deletions

diff --git a/ext/tk/lib/tkextlib/tcllib/autoscroll.rb b/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
index 7db3c2e2b7..2def59bf73 100644
--- a/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
+++ b/ext/tk/lib/tkextlib/tcllib/autoscroll.rb
@@ -7,20 +7,20 @@
 #
 # (The following is the original description of the library.)
 #
-# This package allows scrollbars to be mapped and unmapped as needed 
-# depending on the size and content of the scrollbars scrolled widget. 
-# The scrollbar must be managed by either pack or grid, other geometry 
+# This package allows scrollbars to be mapped and unmapped as needed
+# depending on the size and content of the scrollbars scrolled widget.
+# The scrollbar must be managed by either pack or grid, other geometry
 # managers are not supported.
 #
-# When managed by pack, any geometry changes made in the scrollbars parent 
-# between the time a scrollbar is unmapped, and when it is mapped will be 
-# lost. It is an error to destroy any of the scrollbars siblings while the 
-# scrollbar is unmapped. When managed by grid, if anything becomes gridded 
-# in the same row and column the scrollbar occupied it will be replaced by 
+# When managed by pack, any geometry changes made in the scrollbars parent
+# between the time a scrollbar is unmapped, and when it is mapped will be
+# lost. It is an error to destroy any of the scrollbars siblings while the
+# scrollbar is unmapped. When managed by grid, if anything becomes gridded
+# in the same row and column the scrollbar occupied it will be replaced by
 # the scrollbar when remapped.
 #
-# This package may be used on any scrollbar-like widget as long as it 
-# supports the set subcommand in the same style as scrollbar. If the set 
+# This package may be used on any scrollbar-like widget as long as it
+# supports the set subcommand in the same style as scrollbar. If the set
 # subcommand is not used then this package will have no effect.
 #
 
@@ -110,14 +110,14 @@ end
 
 class Tk::Scrollbar
   def autoscroll
-    # Arranges for the already existing scrollbar to be mapped 
+    # Arranges for the already existing scrollbar to be mapped
     # and unmapped as needed.
     #tk_call_without_enc('::autoscroll::autoscroll', @path)
     Tk::Tcllib::Autoscroll.autoscroll(self)
     self
   end
   def unautoscroll
-    #     Returns the scrollbar to its original static state. 
+    #     Returns the scrollbar to its original static state.
     #tk_call_without_enc('::autoscroll::unautoscroll', @path)
     Tk::Tcllib::Autoscroll.unautoscroll(self)
     self
diff --git a/ext/tk/lib/tkextlib/tcllib/ctext.rb b/ext/tk/lib/tkextlib/tcllib/ctext.rb
index 9014037f3d..21d6438b48 100644
--- a/ext/tk/lib/tkextlib/tcllib/ctext.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ctext.rb
@@ -39,7 +39,7 @@ class Tk::Tcllib::CText
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
@@ -48,7 +48,7 @@ class Tk::Tcllib::CText
   private :create_self
 
   def __strval_optkeys
-    super() << 'linemapfg' << 'linemapbg' << 
+    super() << 'linemapfg' << 'linemapbg' <<
       'linemap_select_fg' << 'linemap_select_bg'
   end
   private :__strval_optkeys
@@ -96,19 +96,19 @@ class Tk::Tcllib::CText
   end
 
   def add_highlight_class_for_special_chars(klass, col, *chrs)
-    tk_call('ctext::addHighlightClassForSpecialChars', 
+    tk_call('ctext::addHighlightClassForSpecialChars',
             @path, klass, col, chrs.join(''))
     self
   end
 
   def add_highlight_class_for_regexp(klass, col, tcl_regexp)
-    tk_call('ctext::addHighlightClassForRegexp', 
+    tk_call('ctext::addHighlightClassForRegexp',
             @path, klass, col, tcl_regexp)
     self
   end
 
   def add_highlight_class_with_only_char_start(klass, col, chr)
-    tk_call('ctext::addHighlightClassWithOnlyCharStart', 
+    tk_call('ctext::addHighlightClassWithOnlyCharStart',
             @path, klass, col, chr)
     self
   end
diff --git a/ext/tk/lib/tkextlib/tcllib/cursor.rb b/ext/tk/lib/tkextlib/tcllib/cursor.rb
index 9bb828e8dd..5c47f9709b 100644
--- a/ext/tk/lib/tkextlib/tcllib/cursor.rb
+++ b/ext/tk/lib/tkextlib/tcllib/cursor.rb
@@ -44,8 +44,8 @@ module Tk
   end
 
   def self.cursor_display(parent=None)
-    # Pops up a dialog with a listbox containing all the cursor names. 
-    # Selecting a cursor name will display it in that dialog. 
+    # Pops up a dialog with a listbox containing all the cursor names.
+    # Selecting a cursor name will display it in that dialog.
     # This is simply for viewing any available cursors on the platform .
     #tk_call_without_enc('::cursor::display', parent)
     Tk::Tcllib::Cursor.cursor_display(parent)
@@ -54,15 +54,15 @@ end
 
 class TkWindow
   def cursor_propagate(cursor)
-    # Sets the cursor for self and all its descendants to cursor. 
+    # Sets the cursor for self and all its descendants to cursor.
     #tk_call_without_enc('::cursor::propagate', @path, cursor)
     Tk::Tcllib::Cursor.cursor_propagate(self, cursor)
   end
   def cursor_restore(cursor = None)
-    # Restore the original or previously set cursor for self and all its 
-    # descendants. If cursor is specified, that will be used if on any 
-    # widget that did not have a preset cursor (set by a previous call 
-    # to TkWindow#cursor_propagate). 
+    # Restore the original or previously set cursor for self and all its
+    # descendants. If cursor is specified, that will be used if on any
+    # widget that did not have a preset cursor (set by a previous call
+    # to TkWindow#cursor_propagate).
     #tk_call_without_enc('::cursor::restore', @path, cursor)
     Tk::Tcllib::Cursor.cursor_restore(self, cursor)
   end
diff --git a/ext/tk/lib/tkextlib/tcllib/datefield.rb b/ext/tk/lib/tkextlib/tcllib/datefield.rb
index 2244dd7a9a..4c2eae741e 100644
--- a/ext/tk/lib/tkextlib/tcllib/datefield.rb
+++ b/ext/tk/lib/tkextlib/tcllib/datefield.rb
@@ -7,12 +7,12 @@
 #
 # (The following is the original description of the library.)
 #
-# The datefield package provides the datefield widget which is an enhanced 
-# text entry widget for the purpose of date entry. Only valid dates of the 
+# The datefield package provides the datefield widget which is an enhanced
+# text entry widget for the purpose of date entry. Only valid dates of the
 # form MM/DD/YYYY can be entered.
-# 
-# The datefield widget is, in fact, just an entry widget with specialized 
-# bindings. This means all the command and options for an entry widget apply 
+#
+# The datefield widget is, in fact, just an entry widget with specialized
+# bindings. This means all the command and options for an entry widget apply
 # equally here.
 
 require 'tk'
@@ -47,7 +47,7 @@ class Tk::Tcllib::Datefield
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/dialog.rb b/ext/tk/lib/tkextlib/tcllib/dialog.rb
index 825621b5a1..86a0ef2269 100644
--- a/ext/tk/lib/tkextlib/tcllib/dialog.rb
+++ b/ext/tk/lib/tkextlib/tcllib/dialog.rb
@@ -41,7 +41,7 @@ class Tk::Tcllib::Widget::Dialog
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/getstring.rb b/ext/tk/lib/tkextlib/tcllib/getstring.rb
index fc5d8b26d9..ab45c9b1ea 100644
--- a/ext/tk/lib/tkextlib/tcllib/getstring.rb
+++ b/ext/tk/lib/tkextlib/tcllib/getstring.rb
@@ -74,7 +74,7 @@ class Tk::Tcllib::GetString_Dialog
 
   def show
     @variable.value = ''
-    @status = bool(tk_call(self.class::TkCommandNames[0], 
+    @status = bool(tk_call(self.class::TkCommandNames[0],
                            @path, @variable, @text, *hash_kv(@keys)))
   end
   alias display show
diff --git a/ext/tk/lib/tkextlib/tcllib/ico.rb b/ext/tk/lib/tkextlib/tcllib/ico.rb
index 8c92926a4c..538f7b5408 100644
--- a/ext/tk/lib/tkextlib/tcllib/ico.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ico.rb
@@ -50,23 +50,23 @@ class Tk::Tcllib::ICO
 
   def self.get_data(file, index, keys={})
     keys['format'] = 'data'
-    tk_split_list(tk_call_without_enc('::ico::getIcon', file, index, 
+    tk_split_list(tk_call_without_enc('::ico::getIcon', file, index,
                                       *hash_kv(keys, true)))
   end
 
   def self.write(file, index, depth, data, keys=nil)
-    tk_call_without_enc('::ico::writeIcon', file, index, depth, data, 
+    tk_call_without_enc('::ico::writeIcon', file, index, depth, data,
                         *hash_kv(keys, true))
   end
 
   def self.copy(from_file, from_index, to_file, to_index, keys=nil)
-    tk_call_without_enc('::ico::copyIcon', 
-                        from_file, from_index, to_file, to_index, 
+    tk_call_without_enc('::ico::copyIcon',
+                        from_file, from_index, to_file, to_index,
                         *hash_kv(keys, true))
   end
 
   def self.exe_to_ico(exe_file, ico_file, keys=nil)
-    tk_call_without_enc('::ico::copyIcon', exe_file, ico_file, 
+    tk_call_without_enc('::ico::copyIcon', exe_file, ico_file,
                         *hash_kv(keys, true))
   end
 
@@ -76,7 +76,7 @@ class Tk::Tcllib::ICO
 
   def self.transparent_color(image, color)
     if image.kind_of?(Array)
-      tk_split_list(tk_call_without_enc('::ico::transparentColor', 
+      tk_split_list(tk_call_without_enc('::ico::transparentColor',
                                         image, color))
     else
       tk_call_without_enc('::ico::transparentColor', image, color)
@@ -99,7 +99,7 @@ class Tk::Tcllib::ICO
         Tk_Image_ID[1].succ!
       }
     end
-    tk_call_without_enc('::ico::getIcon', file, index, '-name', @path, 
+    tk_call_without_enc('::ico::getIcon', file, index, '-name', @path,
                         '-format', 'image', *hash_kv(keys, true))
     Tk_IMGTBL[@path] = self
   end
diff --git a/ext/tk/lib/tkextlib/tcllib/ip_entry.rb b/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
index c4b8240c04..a8a33f1cad 100644
--- a/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
@@ -7,7 +7,7 @@
 #
 # (The following is the original description of the library.)
 #
-# This package provides a widget for the entering of a IP address. 
+# This package provides a widget for the entering of a IP address.
 # It guarantees a valid address at all times.
 
 require 'tk'
@@ -43,7 +43,7 @@ class Tk::Tcllib::IP_Entry
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/panelframe.rb b/ext/tk/lib/tkextlib/tcllib/panelframe.rb
index 2a4562e779..9086ad78d2 100644
--- a/ext/tk/lib/tkextlib/tcllib/panelframe.rb
+++ b/ext/tk/lib/tkextlib/tcllib/panelframe.rb
@@ -37,7 +37,7 @@ class Tk::Tcllib::Widget::PanelFrame
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/plotchart.rb b/ext/tk/lib/tkextlib/tcllib/plotchart.rb
index 06ab20f3e6..25a574efbc 100644
--- a/ext/tk/lib/tkextlib/tcllib/plotchart.rb
+++ b/ext/tk/lib/tkextlib/tcllib/plotchart.rb
@@ -7,10 +7,10 @@
 #
 # (The following is the original description of the library.)
 #
-# Plotchart is a Tcl-only package that focuses on the easy creation of 
-# xy-plots, barcharts and other common types of graphical presentations. 
-# The emphasis is on ease of use, rather than flexibility. The procedures 
-# that create a plot use the entire canvas window, making the layout of the 
+# Plotchart is a Tcl-only package that focuses on the easy creation of
+# xy-plots, barcharts and other common types of graphical presentations.
+# The emphasis is on ease of use, rather than flexibility. The procedures
+# that create a plot use the entire canvas window, making the layout of the
 # plot completely automatic.
 #
 # This results in the creation of an xy-plot in, say, ten lines of code:
@@ -32,27 +32,27 @@
 #    $s title "Data series"
 # --------------------------------------------------------------------
 #
-# A drawback of the package might be that it does not do any data management. 
-# So if the canvas that holds the plot is to be resized, the whole plot must 
-# be redrawn. The advantage, though, is that it offers a number of plot and 
+# A drawback of the package might be that it does not do any data management.
+# So if the canvas that holds the plot is to be resized, the whole plot must
+# be redrawn. The advantage, though, is that it offers a number of plot and
 # chart types:
 #
 #    * XY-plots like the one shown above with any number of data series.
-#    * Stripcharts, a kind of XY-plots where the horizontal axis is adjusted 
-#      automatically. The result is a kind of sliding window on the data 
+#    * Stripcharts, a kind of XY-plots where the horizontal axis is adjusted
+#      automatically. The result is a kind of sliding window on the data
 #      series.
 #    * Polar plots, where the coordinates are polar instead of cartesian.
-#    * Isometric plots, where the scale of the coordinates in the two 
-#      directions is always the same, i.e. a circle in world coordinates 
+#    * Isometric plots, where the scale of the coordinates in the two
+#      directions is always the same, i.e. a circle in world coordinates
 #      appears as a circle on the screen.
-#      You can zoom in and out, as well as pan with these plots (Note: this 
-#      works best if no axes are drawn, the zooming and panning routines do 
-#      not distinguish the axes), using the mouse buttons with the control 
+#      You can zoom in and out, as well as pan with these plots (Note: this
+#      works best if no axes are drawn, the zooming and panning routines do
+#      not distinguish the axes), using the mouse buttons with the control
 #      key and the arrow keys with the control key.
 #    * Piecharts, with automatic scaling to indicate the proportions.
-#    * Barcharts, with either vertical or horizontal bars, stacked bars or 
+#    * Barcharts, with either vertical or horizontal bars, stacked bars or
 #      bars side by side.
-#    * Timecharts, where bars indicate a time period and milestones or other 
+#    * Timecharts, where bars indicate a time period and milestones or other
 #      important moments in time are represented by triangles.
 #    * 3D plots (both for displaying surfaces and 3D bars)
 #
@@ -91,13 +91,13 @@ module Tk::Tcllib::Plotchart
   end
 
   def self.world_coordinates(w, *args) # args := xmin, ymin, xmax, ymax
-    tk_call_without_enc('::Plotchart::worldCoordinates', 
+    tk_call_without_enc('::Plotchart::worldCoordinates',
                         w.path, *(args.flatten))
   end
 
-  def self.world_3D_coordinates(w, *args) 
+  def self.world_3D_coordinates(w, *args)
     # args := xmin, ymin, zmin, xmax, ymax, zmax
-    tk_call_without_enc('::Plotchart::world3DCoordinates', 
+    tk_call_without_enc('::Plotchart::world3DCoordinates',
                         w.path, *(args.flatten))
   end
 
@@ -157,7 +157,7 @@ module Tk::Tcllib::Plotchart
       if key.kind_of?(Hash)
         tk_call_without_enc(@chart, 'xconfig', *hash_kv(key, true))
       else
-        tk_call_without_enc(@chart, 'xconfig', 
+        tk_call_without_enc(@chart, 'xconfig',
                             "-#{key}", _get_eval_enc_str(value))
       end
       self
@@ -167,7 +167,7 @@ module Tk::Tcllib::Plotchart
       if key.kind_of?(Hash)
         tk_call_without_enc(@chart, 'yconfig', *hash_kv(key, true))
       else
-        tk_call_without_enc(@chart, 'yconfig', 
+        tk_call_without_enc(@chart, 'yconfig',
                             "-#{key}", _get_eval_enc_str(value))
       end
       self
@@ -180,14 +180,14 @@ module Tk::Tcllib::Plotchart
     end
 
     def world_coordinates(*args) # args := xmin, ymin, xmax, ymax
-      tk_call_without_enc('::Plotchart::worldCoordinates', 
+      tk_call_without_enc('::Plotchart::worldCoordinates',
                           @path, *(args.flatten))
       self
     end
 
-    def world_3D_coordinates(*args) 
+    def world_3D_coordinates(*args)
       # args := xmin, ymin, zmin, xmax, ymax, zmax
-      tk_call_without_enc('::Plotchart::world3DCoordinates', 
+      tk_call_without_enc('::Plotchart::world3DCoordinates',
                           @path, *(args.flatten))
       self
     end
@@ -229,7 +229,7 @@ module Tk::Tcllib::Plotchart
     include ChartMethod
 
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createXYPlot'.freeze
     ].freeze
 
@@ -259,7 +259,7 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
                           array2tk_list(@xaxis), array2tk_list(@yaxis))
     end
     private :_create_chart
@@ -324,7 +324,7 @@ module Tk::Tcllib::Plotchart
       if key.kind_of?(Hash)
         tk_call_without_enc(@chart, 'dataconfig', series, *hash_kv(key, true))
       else
-        tk_call_without_enc(@chart, 'dataconfig', series, 
+        tk_call_without_enc(@chart, 'dataconfig', series,
                             "-#{key}", _get_eval_enc_str(value))
       end
     end
@@ -333,7 +333,7 @@ module Tk::Tcllib::Plotchart
   ############################
   class Stripchart < XYPlot
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createStripchart'.freeze
     ].freeze
   end
@@ -343,7 +343,7 @@ module Tk::Tcllib::Plotchart
     include ChartMethod
 
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createPolarplot'.freeze
     ].freeze
 
@@ -370,7 +370,7 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
                           array2tk_list(@radius_data))
     end
     private :_create_chart
@@ -382,7 +382,7 @@ module Tk::Tcllib::Plotchart
     end
 
     def plot(series, radius, angle)
-      tk_call_without_enc(@chart, 'plot', _get_eval_enc_str(series), 
+      tk_call_without_enc(@chart, 'plot', _get_eval_enc_str(series),
                           radius, angle)
       self
     end
@@ -391,7 +391,7 @@ module Tk::Tcllib::Plotchart
       if key.kind_of?(Hash)
         tk_call_without_enc(@chart, 'dataconfig', series, *hash_kv(key, true))
       else
-        tk_call_without_enc(@chart, 'dataconfig', series, 
+        tk_call_without_enc(@chart, 'dataconfig', series,
                             "-#{key}", _get_eval_enc_str(value))
       end
     end
@@ -403,7 +403,7 @@ module Tk::Tcllib::Plotchart
     include ChartMethod
 
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createIsometricPlot'.freeze
     ].freeze
 
@@ -446,8 +446,8 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
-                          array2tk_list(@xaxis), array2tk_list(@yaxis), 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
+                          array2tk_list(@xaxis), array2tk_list(@yaxis),
                           @stepsize)
     end
     private :_create_chart
@@ -483,7 +483,7 @@ module Tk::Tcllib::Plotchart
     include ChartMethod
 
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::create3DPlot'.freeze
     ].freeze
 
@@ -516,9 +516,9 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
-                          array2tk_list(@xaxis), 
-                          array2tk_list(@yaxis), 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
+                          array2tk_list(@xaxis),
+                          array2tk_list(@yaxis),
                           array2tk_list(@zaxis))
     end
     private :_create_chart
@@ -542,10 +542,10 @@ module Tk::Tcllib::Plotchart
     end
 
     def plot_data(dat)
-      # dat has to be provided as a 2 level array. 
-      # 1st level contains rows, drawn in y-direction, 
-      # and each row is an array whose elements are drawn in x-direction, 
-      # for the columns. 
+      # dat has to be provided as a 2 level array.
+      # 1st level contains rows, drawn in y-direction,
+      # and each row is an array whose elements are drawn in x-direction,
+      # for the columns.
       tk_call_without_enc(@chart, 'plotdata', dat)
       self
     end
@@ -565,7 +565,7 @@ module Tk::Tcllib::Plotchart
     include ChartMethod
 
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createPiechart'.freeze
     ].freeze
 
@@ -596,11 +596,11 @@ module Tk::Tcllib::Plotchart
     include ChartMethod
 
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createBarchart'.freeze
     ].freeze
 
-    def initialize(*args) 
+    def initialize(*args)
       # args := ([parent,] xlabels, ylabels [, series] [, keys])
       # xlabels, ylabels := labels | axis ( depend on normal or horizontal )
       # labels := Array of [label, label, ...]
@@ -642,8 +642,8 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
-                          array2tk_list(@xlabels), array2tk_list(@ylabels), 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
+                          array2tk_list(@xlabels), array2tk_list(@ylabels),
                           @series_size)
     end
     private :_create_chart
@@ -672,7 +672,7 @@ module Tk::Tcllib::Plotchart
   ############################
   class HorizontalBarchart < Barchart
     TkCommandNames = [
-      'canvas'.freeze, 
+      'canvas'.freeze,
       '::Plotchart::createHorizontalBarchart'.freeze
     ].freeze
   end
@@ -717,7 +717,7 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
                           @time_begin, @time_end, @items)
     end
     private :_create_chart
@@ -790,13 +790,13 @@ module Tk::Tcllib::Plotchart
 
     def _create_chart
       p self.class::TkCommandNames[1] if $DEBUG
-      tk_call_without_enc(self.class::TkCommandNames[1], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[1], @path,
                           @time_begin, @time_end, @items, @text_width)
     end
     private :_create_chart
 
     def task(txt, time_begin, time_end, completed=0.0)
-      list(tk_call_without_enc(@chart, 'task', txt, time_begin, time_end, 
+      list(tk_call_without_enc(@chart, 'task', txt, time_begin, time_end,
                                completed)).collect!{|id|
         TkcItem.id2obj(self, id)
       }
diff --git a/ext/tk/lib/tkextlib/tcllib/ruler.rb b/ext/tk/lib/tkextlib/tcllib/ruler.rb
index 88ffb2c912..d22dafa053 100644
--- a/ext/tk/lib/tkextlib/tcllib/ruler.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ruler.rb
@@ -46,7 +46,7 @@ class Tk::Tcllib::Widget::Ruler
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/screenruler.rb b/ext/tk/lib/tkextlib/tcllib/screenruler.rb
index 1b4067e2f0..75fa36b66d 100644
--- a/ext/tk/lib/tkextlib/tcllib/screenruler.rb
+++ b/ext/tk/lib/tkextlib/tcllib/screenruler.rb
@@ -47,7 +47,7 @@ class Tk::Tcllib::Widget::ScreenRuler
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/scrollwin.rb b/ext/tk/lib/tkextlib/tcllib/scrollwin.rb
index 717728e34a..c9f6062fef 100644
--- a/ext/tk/lib/tkextlib/tcllib/scrollwin.rb
+++ b/ext/tk/lib/tkextlib/tcllib/scrollwin.rb
@@ -42,7 +42,7 @@ class Tk::Tcllib::Widget::ScrolledWindow
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/setup.rb b/ext/tk/lib/tkextlib/tcllib/setup.rb
index ce0f0bd4d4..ee406c6ca0 100644
--- a/ext/tk/lib/tkextlib/tcllib/setup.rb
+++ b/ext/tk/lib/tkextlib/tcllib/setup.rb
@@ -2,7 +2,7 @@
 #  setup.rb   --   setup script before calling TkPackage.require()
 #
 #    If you need some setup operations (for example, add a library path
-#    to the library search path) before using Tcl/Tk library packages 
-#    wrapped by Ruby scripts in this directory, please write the setup 
+#    to the library search path) before using Tcl/Tk library packages
+#    wrapped by Ruby scripts in this directory, please write the setup
 #    operations in this file.
 #
diff --git a/ext/tk/lib/tkextlib/tcllib/superframe.rb b/ext/tk/lib/tkextlib/tcllib/superframe.rb
index 35da37efbf..adc9c4adbd 100644
--- a/ext/tk/lib/tkextlib/tcllib/superframe.rb
+++ b/ext/tk/lib/tkextlib/tcllib/superframe.rb
@@ -37,7 +37,7 @@ class Tk::Tcllib::Widget::SuperFrame
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
diff --git a/ext/tk/lib/tkextlib/tcllib/swaplist.rb b/ext/tk/lib/tkextlib/tcllib/swaplist.rb
index 1c813e36da..bb4c71cd5f 100644
--- a/ext/tk/lib/tkextlib/tcllib/swaplist.rb
+++ b/ext/tk/lib/tkextlib/tcllib/swaplist.rb
@@ -44,7 +44,7 @@ class Tk::Tcllib::Swaplist_Dialog
     self.show(*args)
   end
 
-  def initialize(*args) 
+  def initialize(*args)
     # args = (parent=nil, complete_list=[], selected_list=[], keys=nil)
     keys = args.pop
     if keys.kind_of?(Hash)
@@ -74,9 +74,9 @@ class Tk::Tcllib::Swaplist_Dialog
 
   def show
     @variable.value = ''
-    @status = bool(tk_call(self.class::TkCommandNames[0], 
-                           @path, @variable, 
-                           @complete_list, @selected_list, 
+    @status = bool(tk_call(self.class::TkCommandNames[0],
+                           @path, @variable,
+                           @complete_list, @selected_list,
                            *hash_kv(@keys)))
   end
   alias display show
diff --git a/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb b/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb
index d7a6c97210..c99f62f2dc 100644
--- a/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb
+++ b/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb
@@ -4,7 +4,7 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 #   * Part of tcllib extension
-#   * This file is required by 'tkextlib/tcllib/tablelist.rb' or 
+#   * This file is required by 'tkextlib/tcllib/tablelist.rb' or
 #     'tkextlib/tcllib/tablelist_tile.rb'.
 #
 
@@ -54,7 +54,7 @@ module Tk::Tcllib::TablelistItemConfig
     elsif idx =~ /([^,]+),([^,]+)/
       row = $1, column = $2
       [num_or_str(row), num_or_str(column)]
-    else 
+    else
       num_or_str(idx)
     end
   end
@@ -144,7 +144,7 @@ class Tk::Tcllib::Tablelist
 
   def create_self(keys)
     if keys and keys != None
-      tk_call_without_enc(self.class::TkCommandNames[0], @path, 
+      tk_call_without_enc(self.class::TkCommandNames[0], @path,
                           *hash_kv(keys, true))
     else
       tk_call_without_enc(self.class::TkCommandNames[0], @path)
@@ -166,8 +166,8 @@ class Tk::Tcllib::Tablelist
 
   def __boolval_optkeys
     super() + [
-      'forceeditendcommand', 'movablecolumns', 'movablerows', 
-      'protecttitlecolumns', 'resizablecolumns', 
+      'forceeditendcommand', 'movablecolumns', 'movablerows',
+      'protecttitlecolumns', 'resizablecolumns',
       'showarrow', 'showlabels', 'showseparators'
     ]
   end
@@ -194,7 +194,7 @@ class Tk::Tcllib::Tablelist
     # The method is used to convert a ruby's object to a opt-value.
     # When set the value of the option "key", "proc.call(value)" is called.
     # That is, "-#{key} #{proc.call(value)}".
-    super().update('stretch'=>proc{|v| 
+    super().update('stretch'=>proc{|v|
                      (v.kind_of?(Array))? v.collect{|e| _to_idx(e)}: v
                    })
   end
@@ -218,7 +218,7 @@ class Tk::Tcllib::Tablelist
 
   def __item_boolval_optkeys(id)
     super(id) + [
-      'editable', 'hide', 'resizable', 'showarrow', 'stretchable', 
+      'editable', 'hide', 'resizable', 'showarrow', 'stretchable',
     ]
   end
   private :__item_boolval_optkeys
@@ -249,7 +249,7 @@ class Tk::Tcllib::Tablelist
     tk_send('activatecell', _to_idx(index))
     self
   end
-  alias activatecell activate_cell 
+  alias activatecell activate_cell
 
   def get_attrib(name=nil)
     if name && name != None
@@ -280,7 +280,7 @@ class Tk::Tcllib::Tablelist
     TkBindTag.new_by_name(tk_send('bodytag'))
   end
 
-  def cancel_editing 
+  def cancel_editing
     tk_send('cancelediting')
     self
   end
@@ -338,7 +338,7 @@ class Tk::Tcllib::Tablelist
     idx = _from_idx(tk_send('containingcell', x, y))
     if idx.kind_of?(Array)
       [
-        ((idx[0].kind_of?(Fixnum) && idx[0] < 0)?  nil: idx[0]), 
+        ((idx[0].kind_of?(Fixnum) && idx[0] < 0)?  nil: idx[0]),
         ((idx[1].kind_of?(Fixnum) && idx[1] < 0)?  nil: idx[1])
       ]
     else
@@ -698,7 +698,7 @@ class << Tk::Tcllib::Tablelist
 
 
   ############################################################
-  # with the BWidget package 
+  # with the BWidget package
   def addBWidgetEntry(name=None)
     Tk.tk_call('::tablelist::addBWidgetEntry', name)
   end
@@ -713,7 +713,7 @@ class << Tk::Tcllib::Tablelist
 
 
   ############################################################
-  # with the Iwidgets ([incr Widgets]) package 
+  # with the Iwidgets ([incr Widgets]) package
   def addIncrEntryfield(name=None)
     Tk.tk_call('::tablelist::addIncrEntry', name)
   end
diff --git a/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb b/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb
index b366e0198b..2f6e4b44fc 100644
--- a/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb
+++ b/ext/tk/lib/tkextlib/tcllib/tkpiechart.rb
@@ -52,7 +52,7 @@ module Tk::Tcllib::Tkpiechart
     private :__config_cmd
 
     def __configinfo_struct
-      {:key=>0, :alias=>nil, :db_name=>nil, :db_class=>nil, 
+      {:key=>0, :alias=>nil, :db_name=>nil, :db_class=>nil,
         :default_value=>1, :current_value=>2}
     end
     private :__configinfo_struct
@@ -63,7 +63,7 @@ module Tk::Tcllib::Tkpiechart
     private :__boolval_optkeys
 
     def __strval_optkeys
-      super() << 'bordercolor' << 'textbackground' << 
+      super() << 'bordercolor' << 'textbackground' <<
         'widestvaluetext' << 'title'
     end
     private :__strval_optkeys
@@ -90,7 +90,7 @@ module Tk::Tcllib::Tkpiechart
 
     def create_self(x, y, width, height, keys=None)
       if keys and keys != None
-        @tag_key = tk_call_without_enc('::stooop::new', 'pie', 
+        @tag_key = tk_call_without_enc('::stooop::new', 'pie',
                                        @c, x, y, *hash_kv(keys, true))
       else
         @tag_key = tk_call_without_enc('::stooop::new', 'pie', @c, x, y)
@@ -148,7 +148,7 @@ module Tk::Tcllib::Tkpiechart
     end
 
     def selected_slices
-      tk_split_simplelist(tk_call_without_enc('pie::selectedSlices', 
+      tk_split_simplelist(tk_call_without_enc('pie::selectedSlices',
                                               @tag_key)).collect{|slice|
         @slice_tbl[slice] || Slice.new(:no_create, self, slice)
       }
@@ -212,7 +212,7 @@ module Tk::Tcllib::Tkpiechart
     end
 
     def size(share, disp=None)
-      tk_call_without_enc('pie::sizeSlice', 
+      tk_call_without_enc('pie::sizeSlice',
                           @pie.tag_key, @tag_key, share, disp)
       self
     end
@@ -236,7 +236,7 @@ module Tk::Tcllib::Tkpiechart
 
     def create_self(keys=None)
       if keys and keys != None
-        @tag_key = tk_call_without_enc('::stooop::new', 'pieBoxLabeler', 
+        @tag_key = tk_call_without_enc('::stooop::new', 'pieBoxLabeler',
                                        *hash_kv(keys, true))
       else
         @tag_key = tk_call_without_enc('::stooop::new', 'pieBoxLabeler')
@@ -268,8 +268,8 @@ module Tk::Tcllib::Tkpiechart
 
     def create_self(keys=None)
       if keys and keys != None
-        @tag_key = tk_call_without_enc('::stooop::new', 
-                                       'piePeripheralLabeler', 
+        @tag_key = tk_call_without_enc('::stooop::new',
+                                       'piePeripheralLabeler',
                                        *hash_kv(keys, true))
       else
         @tag_key = tk_call_without_enc('::stooop::new', 'piePeripheralLabeler')
@@ -296,11 +296,11 @@ module Tk::Tcllib::Tkpiechart
 
     def create_self(x, y, keys=None)
       if keys and keys != None
-        @tag_key = tk_call_without_enc('::stooop::new', 'canvasLabel', 
-                                       @c, x, y, width, height, 
+        @tag_key = tk_call_without_enc('::stooop::new', 'canvasLabel',
+                                       @c, x, y, width, height,
                                        *hash_kv(keys, true))
       else
-        @tag_key = tk_call_without_enc('::stooop::new', 'canvasLabel', 
+        @tag_key = tk_call_without_enc('::stooop::new', 'canvasLabel',
                                        @c, x, y, width, height)
       end
 
diff --git a/ext/tk/lib/tkextlib/tcllib/tooltip.rb b/ext/tk/lib/tkextlib/tcllib/tooltip.rb
index 4301b39fd3..73b7df0c22 100644
--- a/ext/tk/lib/tkextlib/tcllib/tooltip.rb
+++ b/ext/tk/lib/tkextlib/tcllib/tooltip.rb
@@ -3,7 +3,7 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 #   * Part of tcllib extension
-#   * Provides tooltips, a small text message that is displayed when the 
+#   * Provides tooltips, a small text message that is displayed when the
 #     mouse hovers over a widget.
 #