Fixed a regression introduced into eff06db where typed commands were …

…not properly tokenized when using tabs instead of spaces.

addons/source-python/packages/source-python/core/__init__.py

@@ -184,7 +184,7 @@ def __init__(self, infile, *args, **kwargs):
 class Tokenize(list):
     """Parses the arguments from the given string."""
 
-    _pattern = re_compile('"[^"]*"|[^ ]+')
+    _pattern = re_compile(r'"[^"]*"|[^ \t]+')
 
     def __init__(self, string, comment_prefix=None):
         """Splits the arguments from the given string."""