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Unified Diff: tools/lexer_generator/transition_keys.py

Issue 59953002: Experimental lexer generator: parse {} in regexps. (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/parser
Patch Set: rebased Created 7 years, 1 month ago
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Index: tools/lexer_generator/transition_keys.py
diff --git a/tools/lexer_generator/transition_keys.py b/tools/lexer_generator/transition_keys.py
index 8ddbfb3b073f770ab3740b0d0b331b0345782053..d759a4f5b14f01aa4a3f10a40eef84c0e400a7bd 100644
--- a/tools/lexer_generator/transition_keys.py
+++ b/tools/lexer_generator/transition_keys.py
@@ -195,6 +195,7 @@ class TransitionKey:
@staticmethod
def disjoint_keys(key_set):
+ key_set.discard(TransitionKey.epsilon())
if not key_set:
return []
range_map = {}
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