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diff --git a/ext/tcltklib/sample/sample0.rb b/ext/tcltklib/sample/sample0.rb
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+#! /usr/local/bin/ruby -vd
+
+# tcltklib ライブラリのテスト
+
+require "tcltklib"
+
+def test
+ # インタプリタを生成する
+ ip1 = TclTkIp.new()
+
+ # 評価してみる
+ print ip1._return_value().inspect, "\n"
+ print ip1._eval("puts {abc}").inspect, "\n"
+
+ # ボタンを作ってみる
+ print ip1._return_value().inspect, "\n"
+ print ip1._eval("button .lab -text exit -command \"destroy .\"").inspect,
+ "\n"
+ print ip1._return_value().inspect, "\n"
+ print ip1._eval("pack .lab").inspect, "\n"
+ print ip1._return_value().inspect, "\n"
+
+ # インタプリタから ruby コマンドを評価してみる
+# print ip1._eval(%q/ruby {print "print by ruby\n"}/).inspect, "\n"
+ print ip1._eval(%q+puts [ruby {print "print by ruby\n"; "puts by tcl/tk"}]+).inspect, "\n"
+ print ip1._return_value().inspect, "\n"
+
+ # もう一つインタプリタを生成してみる
+ ip2 = TclTkIp.new()
+ ip2._eval("button .lab -text test -command \"puts test ; destroy .\"")
+ ip2._eval("pack .lab")
+
+ TclTkLib.mainloop
+end
+
+test
+GC.start
+
+print "exit\n"