* remove trailing spaces.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@31573 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

26 files changed, 106 insertions, 106 deletions

diff --git a/ext/tk/extconf.rb b/ext/tk/extconf.rb
index 388d6fc1aa..c7bc45f150 100644
--- a/ext/tk/extconf.rb
+++ b/ext/tk/extconf.rb
@@ -5,7 +5,7 @@
 require 'mkmf'
 
 TkLib_Config = {}
-TkLib_Config['search_versions'] = 
+TkLib_Config['search_versions'] =
   # %w[8.9 8.8 8.7 8.6 8.5 8.4 8.3 8.2 8.1 8.0 7.6 4.2]
   # %w[8.7 8.6 8.5 8.4 8.3 8.2 8.1 8.0]
   %w[8.7 8.6 8.5 8.4 8.0] # to shorten search steps
@@ -26,7 +26,7 @@ end
 $cleanfiles << 'config_list'
 config_list_file = 'config_list'
 config_list_file_source = File.join(File.dirname(__FILE__),'config_list.in')
-if !File.exist?(config_list_file) || 
+if !File.exist?(config_list_file) ||
     File.ctime(config_list_file_source) > File.ctime(config_list_file)
   old_config_list_file = config_list_file_source
 else
@@ -92,7 +92,7 @@ if update_flag
 
 else
   makefile = 'Makefile'
-  if File.exist?(makefile) && 
+  if File.exist?(makefile) &&
       File.ctime(config_list_file) > File.ctime(makefile)
     # no need to update Makefile
     exit
@@ -197,7 +197,7 @@ def get_shlib_path_head
 
   else
     [
-      '/opt', '/pkg', '/share', 
+      '/opt', '/pkg', '/share',
       '/usr/local/opt', '/usr/local/pkg', '/usr/local/share', '/usr/local',
       '/usr/opt', '/usr/pkg', '/usr/share', '/usr/contrib', '/usr'
     ].each{|dir|
@@ -268,7 +268,7 @@ def find_macosx_framework
   end
 
   # framework is disabled?
-  if with_config("tcltk-framework") == false || 
+  if with_config("tcltk-framework") == false ||
       enable_config("tcltk-framework") == false
    return false
   end
@@ -276,7 +276,7 @@ def find_macosx_framework
   use_framework ||= (framework_dir = with_config("tcltk-framework"))
   if framework_dir.kind_of? String
     TkLib_Config["tcltk-framework"] = framework_dir.strip.chomp('/')
-    return [File.join(TkLib_Config["tcltk-framework"], 'Tcl.framework'), 
+    return [File.join(TkLib_Config["tcltk-framework"], 'Tcl.framework'),
             File.join(TkLib_Config["tcltk-framework"], 'Tk.framework')]
   end
 
@@ -287,7 +287,7 @@ def find_macosx_framework
   end
 
   paths = [
-    #"~/Library/Frameworks", 
+    #"~/Library/Frameworks",
     "/Library/Frameworks",
     "/Network/Library/Frameworks", "/System/Library/Frameworks"
   ]
@@ -305,7 +305,7 @@ end
 
 def collect_tcltk_defs(tcl_defs_str, tk_defs_str)
   conflicts = [
-    'PACKAGE_NAME', 'PACKAGE_TARNAME', 'PACKAGE_VERSION', 
+    'PACKAGE_NAME', 'PACKAGE_TARNAME', 'PACKAGE_VERSION',
     'PACKAGE_STRING', 'PACKAGE_BUGREPORT'
   ]
 
@@ -347,7 +347,7 @@ def collect_tcltk_defs(tcl_defs_str, tk_defs_str)
 
   defs.delete_if{|name,value|
     conflicts.include?(name) ||
-      ( (vtcl = tcl_defs.assoc(name)) && (vtk = tk_defs.assoc(name)) && 
+      ( (vtcl = tcl_defs.assoc(name)) && (vtk = tk_defs.assoc(name)) &&
           vtcl != vtk )
   }
 
@@ -433,7 +433,7 @@ def get_tclConfig_dirs
           File.join(base, 'Tk.framework', 'Versions', 'Current')
         ]
 
-        Dir.glob(File.join(base, 'Tcl.framework', 
+        Dir.glob(File.join(base, 'Tcl.framework',
                            'Versions', '*')).sort.reverse.each{|dir|
           next if dir =~ /Current/
           config_dir << [dir, dir.gsub(/Tcl/, 'Tk')]
@@ -446,14 +446,14 @@ def get_tclConfig_dirs
     config_dir.concat [
       RbConfig::CONFIG['libdir'],
       File.join(RbConfig::CONFIG['exec_prefix'], 'lib'),
-      File.join(RbConfig::CONFIG['prefix'], 'lib'), 
-      "/usr/local/opt/lib", "/usr/local/pkg/lib", "/usr/local/share/lib", 
-      "/usr/local/lib", "/usr/opt/lib", "/usr/pkg/lib", 
+      File.join(RbConfig::CONFIG['prefix'], 'lib'),
+      "/usr/local/opt/lib", "/usr/local/pkg/lib", "/usr/local/share/lib",
+      "/usr/local/lib", "/usr/opt/lib", "/usr/pkg/lib",
       "/usr/share/lib", "/usr/contrib/lib", "/usr/lib"
     ]
 
     config_dir.concat [
-      '/opt', '/pkg', '/share', 
+      '/opt', '/pkg', '/share',
       '/usr/local/opt', '/usr/local/pkg', '/usr/local/share', '/usr/local',
       '/usr/opt', '/usr/pkg', '/usr/share', '/usr/contrib', '/usr'
     ].map{|dir|
@@ -483,7 +483,7 @@ def get_tclConfig_dirs
     }
 
     paths = [
-      #"~/Library/Frameworks", 
+      #"~/Library/Frameworks",
       "/Library/Frameworks",
       "/Network/Library/Frameworks", "/System/Library/Frameworks"
     ]
@@ -500,7 +500,7 @@ def get_tclConfig_dirs
         File.join(base, 'Tk.framework', 'Versions', 'Current')
       ]
 
-      Dir.glob(File.join(base, 'Tcl.framework', 
+      Dir.glob(File.join(base, 'Tcl.framework',
                          'Versions', '*')).sort.reverse.each{|dir|
         next if dir =~ /Current/
         config_dir << [dir, dir.gsub(/Tcl/, 'Tk')]
@@ -702,7 +702,7 @@ def search_tclConfig(*paths) # libdir list or [tcl-libdir|file, tk-libdir|file]
 end
 
 def get_tclConfig(tclConfig_file, tkConfig_file, tclConfig_dir, tkConfig_dir)
-  use_tclConfig = (tclConfig_file != false) && (tkConfig_file != false) && 
+  use_tclConfig = (tclConfig_file != false) && (tkConfig_file != false) &&
     (tclConfig_dir != false) && (tkConfig_dir != false)
 
   unless use_tclConfig
@@ -736,11 +736,11 @@ def get_tclConfig(tclConfig_file, tkConfig_file, tclConfig_dir, tkConfig_dir)
   TkLib_Config["tclConfig-dir"] = tclConfig_dir
   TkLib_Config["tkConfig-dir"] = tkConfig_dir
 
-  print("Search tclConfig.sh", (tclConfig_dir)? " (in #{tclConfig_dir})": "", 
+  print("Search tclConfig.sh", (tclConfig_dir)? " (in #{tclConfig_dir})": "",
         " and tkConfig.sh", (tkConfig_dir)? " (in #{tkConfig_dir})": "", ".")
   if tclConfig_dir
-    tclConfig, tkConfig = 
-      search_tclConfig([ ((tclConfig_file)? tclConfig_file: tclConfig_dir), 
+    tclConfig, tkConfig =
+      search_tclConfig([ ((tclConfig_file)? tclConfig_file: tclConfig_dir),
                          ((tkConfig_file)?  tkConfig_file:  tkConfig_dir) ])
   else
     tclConfig, tkConfig = search_tclConfig()
@@ -1057,7 +1057,7 @@ def find_tk(tklib, stubs, version, *opt_paths)
   ret
 end
 
-def find_tcltk_library(tcllib, tklib, stubs, tclversion, tkversion, 
+def find_tcltk_library(tcllib, tklib, stubs, tclversion, tkversion,
                        tcl_opt_paths, tk_opt_paths)
   ret = find_tcl(tcllib, stubs, tclversion, *tcl_opt_paths)
   unless ret && ret.find{|path, val| val}
@@ -1094,7 +1094,7 @@ def find_tcltk_header(tclver, tkver)
     base_dir.delete_if{|path| path =~ / /}
   end
 
-  if TclConfig_Info['TCL_INCLUDE_SPEC'] && 
+  if TclConfig_Info['TCL_INCLUDE_SPEC'] &&
       have_tcl_h = try_cpp('#include <tcl.h>', TclConfig_Info['TCL_INCLUDE_SPEC'])
     $INCFLAGS << " " << TclConfig_Info['TCL_INCLUDE_SPEC']
   elsif have_tcl_h = have_header('tcl.h')
@@ -1106,7 +1106,7 @@ def find_tcltk_header(tclver, tkver)
       versions = TkLib_Config['search_versions']
     end
     paths = base_dir.dup
-    versions.each{|ver| 
+    versions.each{|ver|
       paths.concat(base_dir.map{|dir|
                      [dir + '/tcl' + ver, dir + '/tcl' + ver.delete('.')]
                    }.flatten)
@@ -1114,7 +1114,7 @@ def find_tcltk_header(tclver, tkver)
     have_tcl_h = find_header('tcl.h', *paths)
   end
 
-  if TkConfig_Info['TK_INCLUDE_SPEC'] && 
+  if TkConfig_Info['TK_INCLUDE_SPEC'] &&
       have_tk_h = try_cpp('#include <tk.h>', TkConfig_Info['TK_INCLUDE_SPEC'])
     $INCFLAGS << " " << TkConfig_Info['TK_INCLUDE_SPEC']
   elsif have_tk_h = have_header('tk.h')
@@ -1126,7 +1126,7 @@ def find_tcltk_header(tclver, tkver)
       versions = TkLib_Config['search_versions']
     end
     paths = base_dir.dup
-    versions.each{|ver| 
+    versions.each{|ver|
       paths.concat(base_dir.map{|dir|
                      [dir + '/tk' + ver, dir + '/tk' + ver.delete('.')]
                    }.flatten)
@@ -1158,14 +1158,14 @@ def setup_for_macosx_framework(tclver, tkver)
     TclConfig_Info['TCL_INCLUDE_SPEC'] << File.join(tcl_base, 'Headers')
 
     unless tclver
-      dir = Dir.glob(File.join(tcl_base, 'Versions', '*', 'Headers'), 
+      dir = Dir.glob(File.join(tcl_base, 'Versions', '*', 'Headers'),
                      File::FNM_CASEFOLD).sort.reverse[0]
       TclConfig_Info['TCL_INCLUDE_SPEC'] << "-I#{dir.quote} " if dir
     end
   end
 
   if TkLib_Config["tk-framework-header"]
-    TkConfig_Info['TK_INCLUDE_SPEC'] = 
+    TkConfig_Info['TK_INCLUDE_SPEC'] =
       "-I#{TkLib_Config["tk-framework-header"].quote} "
   else
     TkConfig_Info['TK_INCLUDE_SPEC'] = ""
@@ -1179,7 +1179,7 @@ def setup_for_macosx_framework(tclver, tkver)
     TkConfig_Info['TK_INCLUDE_SPEC'] << File.join(tk_base, 'Headers')
 
     unless tkver
-      dir = Dir.glob(File.join(tk_base, 'Versions', '*', 'Headers'), 
+      dir = Dir.glob(File.join(tk_base, 'Versions', '*', 'Headers'),
                      File::FNM_CASEFOLD).sort.reverse[0]
       TkConfig_Info['TK_INCLUDE_SPEC'] << "-I#{dir.quote} " if dir
     end
@@ -1288,9 +1288,9 @@ def pthread_check()
 **
 ** NATIVETHREAD SUPPORT CHECK WARNING:
 **
-**   We cannot check the consistency of nativethread support between 
+**   We cannot check the consistency of nativethread support between
 **   Ruby and the Tcl/Tk library in your environment (are you perhaps
-**   cross-compiling?). If nativethread support for these 2 packages 
+**   cross-compiling?). If nativethread support for these 2 packages
 **   is inconsistent you may find you get errors when running Ruby/Tk
 **   (e.g. hangs or segmentation faults).  We strongly recommend
 **   you to check the consistency manually.
@@ -1333,17 +1333,17 @@ EOF
 **
 ** NATIVETHREAD SUPPORT MODE WARNING:
 **
-**   Ruby is compiled with --enable-pthread, but your Tcl/Tk library 
-**   seems to be compiled without nativethread support. Although you can 
-**   create the tcltklib library, this combination may cause errors (e.g. 
-**   hangs or segmentation faults). If you have no reason to keep the 
-**   current nativethread support status, we recommend you reconfigure and 
+**   Ruby is compiled with --enable-pthread, but your Tcl/Tk library
+**   seems to be compiled without nativethread support. Although you can
+**   create the tcltklib library, this combination may cause errors (e.g.
+**   hangs or segmentation faults). If you have no reason to keep the
+**   current nativethread support status, we recommend you reconfigure and
 **   recompile the libraries so that both or neither support nativethreads.
 **
 **   If you want change the status of nativethread support, please recompile
 **   Ruby without "--enable-pthread" configure option (If you use Ruby 1.9.x
 **   or later, you cannot remove this option, because it requires native-
-**   thread support.) or recompile Tcl/Tk with "--enable-threads" configure 
+**   thread support.) or recompile Tcl/Tk with "--enable-threads" configure
 **   option (if your Tcl/Tk is later than or equal to Tcl/Tk 8.1).
 **
 *****************************************************************************
@@ -1434,14 +1434,14 @@ end
 $CPPFLAGS += ' -D_WIN32' if /cygwin/ =~ RUBY_PLATFORM
 
 # Does ruby have nativethread ?
-TkLib_Config["ruby_with_thread"] = 
+TkLib_Config["ruby_with_thread"] =
   macro_defined?('HAVE_NATIVETHREAD', '#include "ruby.h"')
 
 
 #---------------------------------------------------
 # check requirement of Tcl/tk version
 tcltk_version = with_config("tcltkversion")
-tclver, tkver = 
+tclver, tkver =
   TkLib_Config["tcltkversion"] = check_tcltk_version(tcltk_version)
 puts("Specified Tcl/Tk version is #{[tclver, tkver].inspect}") if tclver&&tkver
 
@@ -1464,12 +1464,12 @@ end
 TkLib_Config["ActiveTcl"] = activeTcl
 
 # allow space chars on a libpath
-TkLib_Config["space-on-tk-libpath"] = 
+TkLib_Config["space-on-tk-libpath"] =
   enable_config("space-on-tk-libpath", ! is_win32?)
 
 # enable Tcl/Tk stubs?
 =begin
-if TclConfig_Info['TCL_STUB_LIB_SPEC'] && TkConfig_Info['TK_STUB_LIB_SPEC'] && 
+if TclConfig_Info['TCL_STUB_LIB_SPEC'] && TkConfig_Info['TK_STUB_LIB_SPEC'] &&
     !TclConfig_Info['TCL_STUB_LIB_SPEC'].strip.empty? &&
     !TkConfig_Info['TK_STUB_LIB_SPEC'].strip.empty?
   stubs = true
@@ -1562,7 +1562,7 @@ use_X = search_X_libraries
 
 if (TkLib_Config["tcltk-framework"] ||
       ( find_tcltk_header(tclver, tkver) &&
-          find_tcltk_library(tcllib, tklib, stubs, tclver, tkver, 
+          find_tcltk_library(tcllib, tklib, stubs, tclver, tkver,
                              tcl_ldir_list, tk_ldir_list) ) ) &&
     (stubs || pthread_check())
   # create Makefile
diff --git a/ext/tk/lib/multi-tk.rb b/ext/tk/lib/multi-tk.rb
index efeaf9830a..b125c6e18e 100644
--- a/ext/tk/lib/multi-tk.rb
+++ b/ext/tk/lib/multi-tk.rb
@@ -774,7 +774,7 @@ class MultiTkIp
 
         ensure
           # interp must be deleted before the thread for interp is dead.
-          # If not, raise Tcl_Panic on Tcl_AsyncDelete because async handler 
+          # If not, raise Tcl_Panic on Tcl_AsyncDelete because async handler
           # deleted by the wrong thread.
           interp.delete
         end
@@ -1933,7 +1933,7 @@ class MultiTkIp
   end
 =end
   def cb_eval(cmd, *args)
-    self.eval_callback(*args, 
+    self.eval_callback(*args,
                        &_proc_on_safelevel{|*params|
                          TkComm._get_eval_string(TkUtil.eval_cmd(cmd, *params))
                        })
@@ -2121,7 +2121,7 @@ class MultiTkIp
           end
           err
         }
-        $SAFE=safe if $SAFE < safe; 
+        $SAFE=safe if $SAFE < safe;
         begin
           yield(*args)
         rescue Exception => e
@@ -2300,7 +2300,7 @@ end
         current[:callback_ip] = backup_ip
       end
     else
-      eval_proc_core(true, 
+      eval_proc_core(true,
                      proc{|safe, *params|
                        Thread.new{cmd.call(safe, *params)}.value
                      },
diff --git a/ext/tk/lib/tk.rb b/ext/tk/lib/tk.rb
index f00afe9ea0..0fd8cfdb20 100644
--- a/ext/tk/lib/tk.rb
+++ b/ext/tk/lib/tk.rb
@@ -1306,7 +1306,7 @@ EOS
 
         ensure
           # interp must be deleted before the thread for interp is dead.
-          # If not, raise Tcl_Panic on Tcl_AsyncDelete because async handler 
+          # If not, raise Tcl_Panic on Tcl_AsyncDelete because async handler
           # deleted by the wrong thread.
           interp.delete
         end
@@ -1339,7 +1339,7 @@ EOS
 
     INTERP.instance_eval{
       # @tk_cmd_tbl = TkUtil.untrust({})
-      @tk_cmd_tbl = 
+      @tk_cmd_tbl =
         TkUtil.untrust(Hash.new{|hash, key|
                          fail IndexError, "unknown command ID '#{key}'"
                        })
diff --git a/ext/tk/lib/tk/autoload.rb b/ext/tk/lib/tk/autoload.rb
index 2ebee9ea24..f6ca261da9 100644
--- a/ext/tk/lib/tk/autoload.rb
+++ b/ext/tk/lib/tk/autoload.rb
@@ -538,8 +538,8 @@ class << Tk
           @TOPLEVEL_ALIAS_TABLE[target][sym] = obj
 
         else # NOT topalias_defined?(sym)
-          # Nobody controls ALIAS[sym]. 
-          # At leaset, current widget set doesn't control ALIAS[sym]. 
+          # Nobody controls ALIAS[sym].
+          # At leaset, current widget set doesn't control ALIAS[sym].
           # Keep Object::sym (even if it is not defined)
           # Keep OWNER[sym].
           @TOPLEVEL_ALIAS_TABLE[target][sym] = obj
@@ -552,7 +552,7 @@ class << Tk
         @TOPLEVEL_ALIAS_TABLE[target][sym] = obj
         replace_topalias(sym, obj)
         replace_topobj(sym, obj)
-        
+
       when nil
         # New definition for sym
         @TOPLEVEL_ALIAS_OWNER[sym] = target
@@ -566,7 +566,7 @@ class << Tk
         # Keep ALIAS[sym].
         # Keep OWNER[sym].
         @TOPLEVEL_ALIAS_TABLE[target][sym] = obj
-        
+
       end
     end
 
@@ -583,7 +583,7 @@ class << Tk
 
   def __set_loaded_toplevel_aliases__(autopath, target, obj, *symbols)
     # autopath is an autoload file
-    # Currently, this method doesn't support that autoload loads 
+    # Currently, this method doesn't support that autoload loads
     # different toplevels between <basename>.rb and <basename>.so extension.
     shortpath = (autopath =~ /^(.*)(.rb|.so)$/)? $1: autopath
     target = target.to_sym
diff --git a/ext/tk/lib/tk/fontchooser.rb b/ext/tk/lib/tk/fontchooser.rb
index 092ffc04bf..694c58a607 100644
--- a/ext/tk/lib/tk/fontchooser.rb
+++ b/ext/tk/lib/tk/fontchooser.rb
@@ -86,7 +86,7 @@ class << TkFont::Chooser
 
   def configure(option, value=None)
     if option.kind_of? Hash
-      tk_call('tk', 'fontchooser', 'configure', 
+      tk_call('tk', 'fontchooser', 'configure',
               *hash_kv(_symbolkey2str(option)))
     else
       opt = option.to_s
@@ -141,8 +141,8 @@ class << TkFont::Chooser
   def set_for(target, title="Font")
     if target.kind_of? TkFont
       configs = {
-        :font=>target.actual_hash, 
-        :command=>proc{|fnt, *args| 
+        :font=>target.actual_hash,
+        :command=>proc{|fnt, *args|
           target.configure(TkFont.actual_hash(fnt))
         }
       }
@@ -152,14 +152,14 @@ class << TkFont::Chooser
       fnt = fnt.actual_hash if fnt.kind_of?(TkFont)
       configs = {
         :font => fnt,
-        :command=>proc{|fnt, *args| 
+        :command=>proc{|fnt, *args|
           target[:font] = TkFont.actual_hash(fnt)
         }
       }
     else
       configs = {
-        :font=>target.cget_tkstring(:font), 
-        :command=>proc{|fnt, *args| 
+        :font=>target.cget_tkstring(:font),
+        :command=>proc{|fnt, *args|
           target.font = TkFont.actual_hash_displayof(fnt, target)
         }
       }
diff --git a/ext/tk/lib/tk/menuspec.rb b/ext/tk/lib/tk/menuspec.rb
index 9521a157d9..cb3597eec9 100644
--- a/ext/tk/lib/tk/menuspec.rb
+++ b/ext/tk/lib/tk/menuspec.rb
@@ -27,7 +27,7 @@
 #
 # A menu_info is an array of menu entries:
 #   [ entry_info, entry_info, ... ]
-# 
+#
 #
 # underline, accelerator, and configs are optional pearameters.
 # Hashes are OK instead of Arrays. Then the entry type ('command',
diff --git a/ext/tk/lib/tk/ttk_selector.rb b/ext/tk/lib/tk/ttk_selector.rb
index 522249e6a9..cc9e9928cb 100644
--- a/ext/tk/lib/tk/ttk_selector.rb
+++ b/ext/tk/lib/tk/ttk_selector.rb
@@ -62,7 +62,7 @@ module Tk
   major, minor, type, patchlevel = TclTkLib.get_version
 
   #  ttk::spinbox is supported on Tcl/Tk8.6b1 or later
-  if ([major,minor,type,patchlevel] <=> 
+  if ([major,minor,type,patchlevel] <=>
         [8,6,TclTkLib::RELEASE_TYPE::BETA,1]) >= 0
     @TOPLEVEL_ALIAS_TABLE[:Ttk].update(
       :TkSpinbox => 'tkextlib/tile/tspinbox'
diff --git a/ext/tk/lib/tkextlib/tcllib/canvas_sqmap.rb b/ext/tk/lib/tkextlib/tcllib/canvas_sqmap.rb
index 0bd59511c1..ba87cd3aae 100644
--- a/ext/tk/lib/tkextlib/tcllib/canvas_sqmap.rb
+++ b/ext/tk/lib/tkextlib/tcllib/canvas_sqmap.rb
@@ -3,7 +3,7 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 #   * Part of tcllib extension
-#   * 
+#   *
 #
 
 require 'tk'
diff --git a/ext/tk/lib/tkextlib/tcllib/canvas_zoom.rb b/ext/tk/lib/tkextlib/tcllib/canvas_zoom.rb
index e2a5061112..f4ffb48ece 100644
--- a/ext/tk/lib/tkextlib/tcllib/canvas_zoom.rb
+++ b/ext/tk/lib/tkextlib/tcllib/canvas_zoom.rb
@@ -3,7 +3,7 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 #   * Part of tcllib extension
-#   * 
+#   *
 #
 
 require 'tk'
diff --git a/ext/tk/lib/tkextlib/tcllib/chatwidget.rb b/ext/tk/lib/tkextlib/tcllib/chatwidget.rb
index 860b9e899b..ddb0340c31 100644
--- a/ext/tk/lib/tkextlib/tcllib/chatwidget.rb
+++ b/ext/tk/lib/tkextlib/tcllib/chatwidget.rb
@@ -3,7 +3,7 @@
 #                               by Hidetoshi NAGAI (nagai@ai.kyutech.ac.jp)
 #
 #   * Part of tcllib extension
-#   * chatwidget - Provides a multi-paned view suitable for display of 
+#   * chatwidget - Provides a multi-paned view suitable for display of
 #                  chat room or irc channel information
 #
 
@@ -92,7 +92,7 @@ class Tk::Tcllib::ChatWidget
 
   def hook_add(type, *args, &blk) # args -> [prior, cmd], [prior], [cmd]
     #type -> 'message', 'post', 'names_group', 'names_nick', 'chatstate', 'url'
-    
+
     if prior = args.shift
       if !prior.kind_of?(Numeric)
         cmd = prior
diff --git a/ext/tk/lib/tkextlib/tcllib/ip_entry.rb b/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
index e5e0f8d42d..4878cc3c23 100644
--- a/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
+++ b/ext/tk/lib/tkextlib/tcllib/ip_entry.rb
@@ -70,6 +70,6 @@ class Tk::Tcllib::IP_Entry
   end
 end
 
-class Tk::Tcllib::IP_Entry6 < Tk::Tcllib::IP_Entry 
+class Tk::Tcllib::IP_Entry6 < Tk::Tcllib::IP_Entry
   TkCommandNames = ['::ipentry::ipentry6'.freeze].freeze
 end
diff --git a/ext/tk/lib/tkextlib/tcllib/khim.rb b/ext/tk/lib/tkextlib/tcllib/khim.rb
index 00acff91d9..5dc2130b35 100644
--- a/ext/tk/lib/tkextlib/tcllib/khim.rb
+++ b/ext/tk/lib/tkextlib/tcllib/khim.rb
@@ -43,11 +43,11 @@ class Tk::Tcllib::KHIM
 
   def self.set_config(*args)
     if args.length == 1
-      # cmd_string generated by 
+      # cmd_string generated by
       #Tk.ip_eval_without_enc(cmd_string)
       Tk.ip_eval(cmd_string)
     else
-      # args for setConfig command 
+      # args for setConfig command
       #Tk.tk_call_without_enc('::khim::setConfig', *args)
       Tk.tk_call('::khim::setConfig', *args)
     end
diff --git a/ext/tk/lib/tkextlib/tcllib/plotchart.rb b/ext/tk/lib/tkextlib/tcllib/plotchart.rb
index 3c944bb266..2f3d79d427 100644
--- a/ext/tk/lib/tkextlib/tcllib/plotchart.rb
+++ b/ext/tk/lib/tkextlib/tcllib/plotchart.rb
@@ -221,7 +221,7 @@ module Tk::Tcllib::Plotchart
     end
 
     def legend(series, text)
-      tk_call_without_enc(@chart, 'legend', 
+      tk_call_without_enc(@chart, 'legend',
                           _get_eval_enc_str(series), _get_eval_enc_str(text))
       self
     end
@@ -238,7 +238,7 @@ module Tk::Tcllib::Plotchart
 
       text, dir = args
 
-      tk_call_without_enc(@chart, 'balloon', x, y, 
+      tk_call_without_enc(@chart, 'balloon', x, y,
                           _get_eval_enc_str(text), dir)
       self
     end
@@ -263,7 +263,7 @@ module Tk::Tcllib::Plotchart
 
       text, dir = args
 
-      tk_call_without_enc(@chart, 'plaintext', x, y, 
+      tk_call_without_enc(@chart, 'plaintext', x, y,
                           _get_eval_enc_str(text), dir)
       self
     end
@@ -485,7 +485,7 @@ module Tk::Tcllib::Plotchart
     end
 
     def dot(series, xcrd, ycrd, value)
-      tk_call_without_enc(@chart, 'dot', _get_eval_enc_str(series), 
+      tk_call_without_enc(@chart, 'dot', _get_eval_enc_str(series),
                           xcrd, ycrd, value)
       self
     end
@@ -804,7 +804,7 @@ module Tk::Tcllib::Plotchart
     private :_create_chart
 
     def plot(label, yvalue, color)
-      tk_call_without_enc(@chart, 'plot', _get_eval_enc_str(label), 
+      tk_call_without_enc(@chart, 'plot', _get_eval_enc_str(label),
                           _get_eval_enc_str(yvalue), color)
       self
     end
@@ -1262,8 +1262,8 @@ module Tk::Tcllib::Plotchart
       # time_begin := String of time format (e.g. "1 january 2004")
       # time_end   := String of time format (e.g. "1 january 2004")
       # args := Expected/maximum number of items
-      #          ( This determines the vertical spacing. ), 
-      #         Expected/maximum width of items, 
+      #          ( This determines the vertical spacing. ),
+      #         Expected/maximum width of items,
       #         Option Hash ( { key=>value, ... } )
       if args[0].kind_of?(String)
         @time_begin = args.shift
diff --git a/ext/tk/lib/tkextlib/tcllib/tablelist.rb b/ext/tk/lib/tkextlib/tcllib/tablelist.rb
index b40f7a5b8b..bf5ab6620a 100644
--- a/ext/tk/lib/tkextlib/tcllib/tablelist.rb
+++ b/ext/tk/lib/tkextlib/tcllib/tablelist.rb
@@ -10,7 +10,7 @@ require 'tkextlib/tcllib.rb'
 
 # check Tile extension :: If already loaded, use tablelist_tile.
 unless defined? Tk::Tcllib::Tablelist_usingTile
-  Tk::Tcllib::Tablelist_usingTile = 
+  Tk::Tcllib::Tablelist_usingTile =
     TkPackage.provide('tile') || TkPackage.provide('Ttk')
 end
 
diff --git a/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb b/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb
index 850e75d845..2a5c415cc7 100644
--- a/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb
+++ b/ext/tk/lib/tkextlib/tcllib/tablelist_core.rb
@@ -419,7 +419,7 @@ class Tk::Tcllib::Tablelist
     columnwidth(idx, 'total')
   end
 
-  def configcelllist(lst) # lst ==> [idx, opt, val, idx, opt, val, ...] 
+  def configcelllist(lst) # lst ==> [idx, opt, val, idx, opt, val, ...]
     ary = []
     lst.slice(3){|idx, opt, val|
       ary << _to_idx(idx) << "-#{opt}" << val
@@ -439,7 +439,7 @@ class Tk::Tcllib::Tablelist
   end
   alias config_cells configcells
 
-  def configcolumnlist(lst) # lst ==> [idx, opt, val, idx, opt, val, ...] 
+  def configcolumnlist(lst) # lst ==> [idx, opt, val, idx, opt, val, ...]
     ary = []
     lst.slice(3){|idx, opt, val|
       ary << _to_idx(idx) << "-#{opt}" << val
@@ -459,7 +459,7 @@ class Tk::Tcllib::Tablelist
   end
   alias config_columns configcolumns
 
-  def configrowlist(lst) # lst ==> [idx, opt, val, idx, opt, val, ...] 
+  def configrowlist(lst) # lst ==> [idx, opt, val, idx, opt, val, ...]
     ary = []
     lst.slice(3){|idx, opt, val|
       ary << _to_idx(idx) << "-#{opt}" << val
@@ -841,11 +841,11 @@ class Tk::Tcllib::Tablelist
 
 
   # default of 'labelcommand' option
-  DEFAULT_labelcommand_value = 
+  DEFAULT_labelcommand_value =
     DEFAULT_sortByColumn_cmd = '::tablelist::sortByColumn'
 
   # default of 'labelcommand2' option
-  DEFAULT_labelcommand2_value = 
+  DEFAULT_labelcommand2_value =
     DEFAULT_addToSortColumns_cmd = '::tablelist::addToSortColumns'
 
   def sortByColumn_with_event_generate(idx)
@@ -1053,7 +1053,7 @@ class << Tk::Tcllib::Tablelist
     else
       gmt = None
     end
-    Tk.tk_call('::tablelist::addDateTimeMentry', 
+    Tk.tk_call('::tablelist::addDateTimeMentry',
                format, date_sep, time_sep, gmt, name)
   end
 
diff --git a/ext/tk/lib/tkextlib/tile/sizegrip.rb b/ext/tk/lib/tkextlib/tile/sizegrip.rb
index d7da0a4075..9947e0d870 100644
--- a/ext/tk/lib/tkextlib/tile/sizegrip.rb
+++ b/ext/tk/lib/tkextlib/tile/sizegrip.rb
@@ -28,5 +28,5 @@ end
 #Tk.__set_toplevel_aliases__(:Ttk, Tk::Tile::Sizegrip,
 #                            :TkSizegrip, :TkSizeGrip)
 Tk.__set_loaded_toplevel_aliases__('tkextlib/tile/sizegrip.rb',
-                                   :Ttk, Tk::Tile::Sizegrip, 
+                                   :Ttk, Tk::Tile::Sizegrip,
                                    :TkSizegrip, :TkSizeGrip)
diff --git a/ext/tk/lib/tkextlib/tile/style.rb b/ext/tk/lib/tkextlib/tile/style.rb
index f38deda503..108d81f88b 100644
--- a/ext/tk/lib/tkextlib/tile/style.rb
+++ b/ext/tk/lib/tkextlib/tile/style.rb
@@ -295,7 +295,7 @@ class << Tk::Tile::Style
     fail ArgumentError, "too many arguments" unless args.empty?
 
     # define a Microsoft Visual Styles element
-    tk_call(TkCommandNames[0], 'element', 'create', name, 'vsapi', 
+    tk_call(TkCommandNames[0], 'element', 'create', name, 'vsapi',
             class_name, part_id, state_map, opts)
   end
 
diff --git a/ext/tk/sample/editable_listbox.rb b/ext/tk/sample/editable_listbox.rb
index 7a9ad4450b..890aec032e 100644
--- a/ext/tk/sample/editable_listbox.rb
+++ b/ext/tk/sample/editable_listbox.rb
@@ -27,7 +27,7 @@ class Tk::RbWidget::Editable_Listbox < TkListbox
       if idx = @ebox.pos
         see(idx) if bbox(idx).empty?
         @ebox.focus(true)
-      end 
+      end
     }
   }
 
diff --git a/ext/tk/sample/menubar3.rb b/ext/tk/sample/menubar3.rb
index 129cfd779b..4f42f81c88 100644
--- a/ext/tk/sample/menubar3.rb
+++ b/ext/tk/sample/menubar3.rb
@@ -58,7 +58,7 @@ layout_proc = proc{|parent, mbtn|
 =end
 
 menubar = TkMenubar.new(nil, menu_spec,
-                        'layout_proc'=>layout_proc, 
+                        'layout_proc'=>layout_proc,
                         'tearoff'=>false,
                         'foreground'=>'grey40',
                         'activeforeground'=>'red',
diff --git a/ext/tk/sample/safe-tk.rb b/ext/tk/sample/safe-tk.rb
index 2aeae235df..38131c0155 100644
--- a/ext/tk/sample/safe-tk.rb
+++ b/ext/tk/sample/safe-tk.rb
@@ -87,7 +87,7 @@ if false && Object.const_defined?(:RubyVM) && ::RubyVM.class == Class
                                 Thread.new(l, &y).value
                               }).pack(:fill=>:x, :padx=>5)
 else
-  # KNOWN BUG:: 
+  # KNOWN BUG::
   #   Current multi-tk.rb cannot support long term threads on callbacks.
   #   Such a thread freezes the Ruby/Tk process.
 end
diff --git a/ext/tk/sample/scrollframe.rb b/ext/tk/sample/scrollframe.rb
index 6a9381d465..e340e1da3c 100644
--- a/ext/tk/sample/scrollframe.rb
+++ b/ext/tk/sample/scrollframe.rb
@@ -209,7 +209,7 @@ end
 
 # test
 if __FILE__ == $0
-  f = Tk::RbWidget::ScrollFrame.new(:scrollbarwidth=>10, 
+  f = Tk::RbWidget::ScrollFrame.new(:scrollbarwidth=>10,
                                     :width=>300, :height=>200)
   f.pack(:expand=>true, :fill=>:both)
 
@@ -234,13 +234,13 @@ if __FILE__ == $0
   # remove a vertical scrollbar, and then the scrollframe is not scrollable.
   Tk.after(6000){ f.vscroll(false) }
 
-  # add a vertical scrollbar, and make the scrollframe scrollable. 
+  # add a vertical scrollbar, and make the scrollframe scrollable.
   Tk.after(9000){ f.vscroll(true) }
 
   # remove a horizontal scrollbar, and then the scrollframe is not scrollable.
   Tk.after(12000){ f.hscroll(false) }
 
-  # add a horizontal scrollbar, and make the scrollframe scrollable. 
+  # add a horizontal scrollbar, and make the scrollframe scrollable.
   Tk.after(15000){ f.hscroll(true) }
 
   Tk.mainloop
diff --git a/ext/tk/sample/tkalignbox.rb b/ext/tk/sample/tkalignbox.rb
index fb1b58f458..f3d083c33d 100644
--- a/ext/tk/sample/tkalignbox.rb
+++ b/ext/tk/sample/tkalignbox.rb
@@ -201,20 +201,20 @@ if __FILE__ == $0
         TkButton.new(f, :text=>'aaa'),
         TkButton.new(f, :text=>'aaaa'))
 
-  f = Tk::RbWidget::VBox.new(:borderwidth=>5, 
+  f = Tk::RbWidget::VBox.new(:borderwidth=>5,
                              :relief=>'groove').pack(:fill=>:y, :expand=>true)
   f.add(TkButton.new(f, :text=>'a'),
         TkButton.new(f, :text=>'aa', :font=>'Helvetica 30'),
         TkButton.new(f, :text=>'aaa'),
         TkButton.new(f, :text=>'aaaa'))
 
-  f = Tk::RbWidget::HRBox.new(:borderwidth=>3, 
+  f = Tk::RbWidget::HRBox.new(:borderwidth=>3,
                               :relief=>'raised').pack(:fill=>:x)
   f.add(TkButton.new(f, :text=>'a'),
         TkButton.new(f, :text=>'aa'),
         TkButton.new(f, :text=>'aaa'))
 
-  f = Tk::RbWidget::VBBox.new(:borderwidth=>3, 
+  f = Tk::RbWidget::VBBox.new(:borderwidth=>3,
                               :relief=>'ridge').pack(:fill=>:x)
   f.propagate = false
   f.height 100
diff --git a/ext/tk/sample/tkballoonhelp.rb b/ext/tk/sample/tkballoonhelp.rb
index a9c00d230d..2daa522601 100644
--- a/ext/tk/sample/tkballoonhelp.rb
+++ b/ext/tk/sample/tkballoonhelp.rb
@@ -64,8 +64,8 @@ class Tk::RbWidget::BalloonHelp<TkLabel
     _balloon_binding(@interval)
 
     # @label = TkLabel.new(@frame, 'background'=>'bisque').pack
-    @label = TkLabel.new(@frame, 
-                         'foreground'=>DEFAULT_FOREGROUND, 
+    @label = TkLabel.new(@frame,
+                         'foreground'=>DEFAULT_FOREGROUND,
                          'background'=>DEFAULT_BACKGROUND).pack
     @label.configure(_symbolkey2str(keys)) unless keys.empty?
     @path = @label
@@ -147,7 +147,7 @@ if __FILE__ == $0
   }
   TkButton.new('text'=>'This button has another balloon help') {|b|
     pack('fill'=>'x')
-    Tk::RbWidget::BalloonHelp.new(b, 
+    Tk::RbWidget::BalloonHelp.new(b,
                         'text'=>"CONFIGURED MESSAGE\nchange colors, and so on",
                         'interval'=>200, 'font'=>'courier',
                         'background'=>'gray', 'foreground'=>'red')
diff --git a/ext/tk/sample/tkcombobox.rb b/ext/tk/sample/tkcombobox.rb
index 59db565f06..c38bde10d4 100644
--- a/ext/tk/sample/tkcombobox.rb
+++ b/ext/tk/sample/tkcombobox.rb
@@ -370,7 +370,7 @@ EOD
 
     startwait = keys.delete('startwait'){300}
     interval = keys.delete('interval'){150}
-    @lst = Tk::RbWidget::AutoScrollListbox.new(@top, :scrollbar=>true, 
+    @lst = Tk::RbWidget::AutoScrollListbox.new(@top, :scrollbar=>true,
                                                :startwait=>startwait,
                                                :interval=>interval)
     @lst.pack(:fill=>:both, :expand=>true)
@@ -464,7 +464,7 @@ if __FILE__ == $0
 # e0.values(%w(aa bb cc dd ee ff gg hh ii jj kk ll mm nn oo pp qq rr ss tt uu))
 
   v = TkVariable.new
-  e = Tk::RbWidget::Combobox.new(:height=>7, :scrollbar=>true, 
+  e = Tk::RbWidget::Combobox.new(:height=>7, :scrollbar=>true,
                                  :textvariable=>v,
                                  :arrowrelief=>:flat, :arrowborderwidth=>0,
                                  :startwait=>400, :interval=>200).pack
@@ -480,9 +480,9 @@ if __FILE__ == $0
   TkFrame.new(:relief=>:raised, :borderwidth=>2,
               :height=>3).pack(:fill=>:x, :expand=>true, :padx=>5, :pady=>3)
 
-  l = Tk::RbWidget::AutoScrollListbox.new(nil, :relief=>:groove, 
-                                          :borderwidth=>4,:height=>7, 
-                                          :width=>20).pack(:fill=>:both, 
+  l = Tk::RbWidget::AutoScrollListbox.new(nil, :relief=>:groove,
+                                          :borderwidth=>4,:height=>7,
+                                          :width=>20).pack(:fill=>:both,
                                                            :expand=>true)
   (0..20).each{|i| l.insert('end', "line #{i}")}
 
diff --git a/ext/tk/stubs.c b/ext/tk/stubs.c
index 4b02fdd728..dd475c3455 100644
--- a/ext/tk/stubs.c
+++ b/ext/tk/stubs.c
@@ -334,7 +334,7 @@ ruby_tk_stubs_init(tcl_ip)
 	  FIX ME : dirty hack for Mac OS X frameworks.
 	  With stubs, fails to find Resource/Script directory of Tk.framework.
 	  So, teach it to a Tcl interpreter by an environment variable.
-	  e.g. when $tcl_library == 
+	  e.g. when $tcl_library ==
 	               /Library/Frameworks/Tcl.framwwork/8.5/Resources/Scripts
 		   ==> /Library/Frameworks/Tk.framwwork/8.5/Resources/Scripts
 	*/
diff --git a/ext/tk/tcltklib.c b/ext/tk/tcltklib.c
index 5135dfa8db..aecd90302c 100644
--- a/ext/tk/tcltklib.c
+++ b/ext/tk/tcltklib.c
@@ -950,7 +950,7 @@ Tcl_AppInitProc Dde_Init, Dde_SafeInit, Registry_Init;
 
 static char *rubytk_kitpath = NULL;
 
-static char rubytkkit_preInitCmd[] = 
+static char rubytkkit_preInitCmd[] =
 "proc tclKitPreInit {} {\n"
     "rename tclKitPreInit {}\n"
     "load {} rubytk_kitpath\n"
@@ -1009,7 +1009,7 @@ static char rubytkkit_preInitCmd[] =
 ;
 
 #if 0
-/* Not use this script. 
+/* Not use this script.
    It's a memo to support an initScript for Tcl interpreters in the future. */
 static const char initScript[] =
 "if {[file isfile [file join $::tcl::kitpath main.tcl]]} {\n"
@@ -1179,8 +1179,8 @@ static int
 call_tclkit_init_script(Tcl_Interp  *interp)
 {
 #if 0
-  /* Currently, do nothing in this function. 
-     It's a memo (quoted from kitInit.c of Tclkit) 
+  /* Currently, do nothing in this function.
+     It's a memo (quoted from kitInit.c of Tclkit)
      to support an initScript for Tcl interpreters in the future. */
   if (Tcl_EvalEx(interp, initScript, -1, TCL_EVAL_GLOBAL) == TCL_OK) {
     const char *encoding = NULL;
@@ -1247,7 +1247,7 @@ setup_rubytkkit()
     /* rbtk_win32_SetHINSTANCE("tcltklib.so"); */
     {
       volatile VALUE basename;
-      basename = rb_funcall(rb_cFile, rb_intern("basename"), 1, 
+      basename = rb_funcall(rb_cFile, rb_intern("basename"), 1,
 			    rb_str_new2(rb_sourcefile()));
       rbtk_win32_SetHINSTANCE(RSTRING_PTR(basename));
     }