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-rw-r--r--lexer.l1
1 files changed, 1 insertions, 0 deletions
diff --git a/lexer.l b/lexer.l
index 606074d..471d94f 100644
--- a/lexer.l
+++ b/lexer.l
@@ -87,6 +87,7 @@ DEC [0-9]+
[Ss][Pp] return SP;
[Pp][Cc] return PC;
[Ee][Xx] return EX;
+[Oo] return EX;
[Aa] return A;
[Bb] return B;