+
−import sys
+
−
+
−formatted_args = []
+
−
+
−UNSAFE_CHARACTERS = [" ", "!", "\"", "#", "$", "&", "'", "(", ")", "*", ",", ";", "<", ">", "?", "[", "\\", "]", "^", "`", "{", "|", "}", ":", "~", "/"]
+
−
+
−
+
−def find_unsafe(arg):
+
−    for unsafe in UNSAFE_CHARACTERS:
+
−        if unsafe in arg:
+
−            return True
+
−
+
−    return False
+
−
+
−
+
−for arg in sys.argv[1:]:
+
−    if find_unsafe(arg):
+
−        formatted_args.append('"%s"' % arg)
+
−    else:
+
−        formatted_args.append(arg)
+
−
+
−print("$ " + " ".join(formatted_args))