[issue9011] ast_for_factor unary minus optimization changes AST
Mark Dickinson
report at bugs.python.org
Sun Jun 20 16:29:26 CEST 2010
Mark Dickinson <dickinsm at gmail.com> added the comment:
Summary of brief discussion on #python-dev:
- This is a hacky patch; it would be better to rewrite that portion of ast.c in a way that doesn't modify the original CST at all. With 2.7 so close, I daren't try anything more invasive than this patch, though. (I don't know whether there are any other portions of this file that deliberately change the CST.)
- Given that no-one noticed this problem in 5 years, the fix can probably wait until 2.7.1, when it can be done properly.
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