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diff --git a/gdb/testsuite/gdb.python/py-cmd.exp b/gdb/testsuite/gdb.python/py-cmd.exp
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+# Copyright (C) 2009 Free Software Foundation, Inc.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+# This file is part of the GDB testsuite.  It tests the mechanism
+# for defining new GDB commands in Python.
+
+if $tracelevel then {
+    strace $tracelevel
+}
+
+# Usage: gdb_py_test_multiple NAME INPUT RESULT {INPUT RESULT}...
+# Run a test named NAME, consisting of multiple lines of input.
+# After each input line INPUT, search for result line RESULT.
+# Succeed if all results are seen; fail otherwise.
+proc gdb_py_test_multiple {name args} {
+    global gdb_prompt
+    foreach {input result} $args {
+	if {[gdb_test_multiple $input "$name - $input" {
+	    -re "\[\r\n\]*($result)\[\r\n\]+($gdb_prompt | *>)$" {
+		pass "$name - $input"
+	    }
+	}]} {
+	    return 1
+	}
+    }
+    return 0
+}
+
+# Start with a fresh gdb.
+
+gdb_exit
+gdb_start
+gdb_reinitialize_dir $srcdir/$subdir
+
+gdb_test_multiple "python print 'hello, world!'" "verify python support" {
+    -re "not supported.*$gdb_prompt $"	{
+      unsupported "python support is disabled"
+      return -1
+    }
+    -re "$gdb_prompt $"	{}
+}
+
+# Test a simple command.
+
+gdb_py_test_multiple "input simple command" \
+  "python" "" \
+  "class test_cmd (gdb.Command):" "" \
+  "  def __init__ (self):" "" \
+  "    super (test_cmd, self).__init__ (\"test_cmd\", gdb.COMMAND_OBSCURE)" "" \
+  "  def invoke (self, arg, from_tty):" "" \
+  "    print \"test_cmd output, arg = %s\" % arg" "" \
+  "test_cmd ()" "" \
+  "end" ""
+
+gdb_test "test_cmd ugh" "test_cmd output, arg = ugh" "call simple command"
+
+# Test a prefix command, and a subcommand within it.
+
+gdb_py_test_multiple "input prefix command" \
+  "python" "" \
+  "class prefix_cmd (gdb.Command):" "" \
+  "  def __init__ (self):" "" \
+  "    super (prefix_cmd, self).__init__ (\"prefix_cmd\", gdb.COMMAND_OBSCURE, gdb.COMPLETE_NONE, True)" "" \
+  "  def invoke (self, arg, from_tty):" "" \
+  "    print \"prefix_cmd output, arg = %s\" % arg" "" \
+  "prefix_cmd ()" "" \
+  "end" ""
+
+gdb_test "prefix_cmd ugh" "prefix_cmd output, arg = ugh" "call prefix command"
+
+gdb_py_test_multiple "input subcommand" \
+  "python" "" \
+  "class subcmd (gdb.Command):" "" \
+  "  def __init__ (self):" "" \
+  "    super (subcmd, self).__init__ (\"prefix_cmd subcmd\", gdb.COMMAND_OBSCURE)" "" \
+  "  def invoke (self, arg, from_tty):" "" \
+  "    print \"subcmd output, arg = %s\" % arg" "" \
+  "subcmd ()" "" \
+  "end" ""
+
+gdb_test "prefix_cmd subcmd ugh" "subcmd output, arg = ugh" "call subcmd"
+
+# Test prefix command using keyword arguments.
+
+gdb_py_test_multiple "input prefix command, keyword arguments" \
+  "python" "" \
+  "class prefix_cmd2 (gdb.Command):" "" \
+  "  def __init__ (self):" "" \
+  "    super (prefix_cmd2, self).__init__ (\"prefix_cmd2\", gdb.COMMAND_OBSCURE, prefix = True, completer_class = gdb.COMPLETE_FILENAME)" "" \
+  "  def invoke (self, arg, from_tty):" "" \
+  "    print \"prefix_cmd2 output, arg = %s\" % arg" "" \
+  "prefix_cmd2 ()" "" \
+  "end" ""
+
+gdb_test "prefix_cmd2 argh" "prefix_cmd2 output, arg = argh" "call prefix command, keyword arguments"
+
+gdb_py_test_multiple "input subcommand under prefix_cmd2" \
+  "python" "" \
+  "class subcmd (gdb.Command):" "" \
+  "  def __init__ (self):" "" \
+  "    super (subcmd, self).__init__ (\"prefix_cmd2 subcmd\", gdb.COMMAND_OBSCURE)" "" \
+  "  def invoke (self, arg, from_tty):" "" \
+  "    print \"subcmd output, arg = %s\" % arg" "" \
+  "subcmd ()" "" \
+  "end" ""
+
+gdb_test "prefix_cmd2 subcmd ugh" "subcmd output, arg = ugh" "call subcmd under prefix_cmd2"
+
+# Test a subcommand in an existing GDB prefix.
+
+gdb_py_test_multiple "input new subcommand" \
+  "python" "" \
+  "class newsubcmd (gdb.Command):" "" \
+  "  def __init__ (self):" "" \
+  "    super (newsubcmd, self).__init__ (\"info newsubcmd\", gdb.COMMAND_OBSCURE)" "" \
+  "  def invoke (self, arg, from_tty):" "" \
+  "    print \"newsubcmd output, arg = %s\" % arg" "" \
+  "newsubcmd ()" "" \
+  "end" ""
+
+gdb_test "info newsubcmd ugh" "newsubcmd output, arg = ugh" "call newsubcmd"