Merge with master

1 files changed, 35 insertions, 0 deletions

diff --git a/setuptools/launch.py b/setuptools/launch.py
new file mode 100644
index 00000000..06e15e1e
--- /dev/null
+++ b/setuptools/launch.py
@@ -0,0 +1,35 @@
+"""
+Launch the Python script on the command line after
+setuptools is bootstrapped via import.
+"""
+
+# Note that setuptools gets imported implicitly by the
+# invocation of this script using python -m setuptools.launch
+
+import tokenize
+import sys
+
+
+def run():
+	"""
+	Run the script in sys.argv[1] as if it had
+	been invoked naturally.
+	"""
+	__builtins__
+	script_name = sys.argv[1]
+	namespace = dict(
+		__file__ = script_name,
+		__name__ = '__main__',
+		__doc__ = None,
+	)
+	sys.argv[:] = sys.argv[1:]
+
+	open_ = getattr(tokenize, 'open', open)
+	script = open_(script_name).read()
+	norm_script = script.replace('\\r\\n', '\\n')
+	code = compile(norm_script, script_name, 'exec')
+	exec(code, namespace)
+
+
+if __name__ == '__main__':
+	run()