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-rw-r--r--pygments/lexers/eiffel.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/pygments/lexers/eiffel.py b/pygments/lexers/eiffel.py
index 7d6757df..e3bf81f5 100644
--- a/pygments/lexers/eiffel.py
+++ b/pygments/lexers/eiffel.py
@@ -57,7 +57,7 @@ class EiffelLexer(RegexLexer):
],
'numbers': [
(r'0[xX][a-fA-F0-9]+', Number.Hex),
- (r'0[bB][0-1]+', Number.Bin),
+ (r'0[bB][01]+', Number.Bin),
(r'0[cC][0-7]+', Number.Oct),
(r'([0-9]+\.[0-9]*)|([0-9]*\.[0-9]+)', Number.Float),
(r'[0-9]+', Number.Integer),