diff options
Diffstat (limited to 'Lib/lib2to3/pytree.py')
| -rw-r--r-- | Lib/lib2to3/pytree.py | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Lib/lib2to3/pytree.py b/Lib/lib2to3/pytree.py index c6655a0..ec87a9d 100644 --- a/Lib/lib2to3/pytree.py +++ b/Lib/lib2to3/pytree.py @@ -11,6 +11,9 @@ There's also a pattern matching implementation here. __author__ = "Guido van Rossum <guido@python.org>" +import sys +from io import StringIO + HUGE = 0x7FFFFFFF # maximum repeat count, default max @@ -655,6 +658,11 @@ class WildcardPattern(BasePattern): elif self.name == "bare_name": yield self._bare_name_matches(nodes) else: + # The reason for this is that hitting the recursion limit usually + # results in some ugly messages about how RuntimeErrors are being + # ignored. + save_stderr = sys.stderr + sys.stderr = StringIO() try: for count, r in self._recursive_matches(nodes, 0): if self.name: @@ -667,6 +675,8 @@ class WildcardPattern(BasePattern): if self.name: r[self.name] = nodes[:count] yield count, r + finally: + sys.stderr = save_stderr def _iterative_matches(self, nodes): """Helper to iteratively yield the matches.""" |