From 82198030eef6f99ad47470d82c34d9a6e1a4e6df Mon Sep 17 00:00:00 2001
From: =?utf8?q?=C5=81ukasz=20Langa?= <lukasz@langa.pl>
Date: Mon, 23 Apr 2018 14:24:14 -0700
Subject: [PATCH] Remove nonsensical grammar from blib2to3

---
 black.py           | 1 -
 blib2to3/pygram.py | 6 +++---
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/black.py b/black.py
index eafc9e7..da645a1 100644
--- a/black.py
+++ b/black.py
@@ -428,7 +428,6 @@ def format_str(src_contents: str, line_length: int) -> FileContent:
 GRAMMARS = [
     pygram.python_grammar_no_print_statement_no_exec_statement,
     pygram.python_grammar_no_print_statement,
-    pygram.python_grammar_no_exec_statement,
     pygram.python_grammar,
 ]
 
diff --git a/blib2to3/pygram.py b/blib2to3/pygram.py
index bf55ab4..b847c1e 100644
--- a/blib2to3/pygram.py
+++ b/blib2to3/pygram.py
@@ -29,16 +29,16 @@ class Symbols(object):
             setattr(self, name, symbol)
 
 
+# Python 2
 python_grammar = driver.load_packaged_grammar("blib2to3", _GRAMMAR_FILE)
 
 python_symbols = Symbols(python_grammar)
 
+# Python 2 + from __future__ import print_function
 python_grammar_no_print_statement = python_grammar.copy()
 del python_grammar_no_print_statement.keywords["print"]
 
-python_grammar_no_exec_statement = python_grammar.copy()
-del python_grammar_no_exec_statement.keywords["exec"]
-
+# Python 3
 python_grammar_no_print_statement_no_exec_statement = python_grammar.copy()
 del python_grammar_no_print_statement_no_exec_statement.keywords["print"]
 del python_grammar_no_print_statement_no_exec_statement.keywords["exec"]
-- 
2.39.2