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-rw-r--r--grammar/lexer.l1
1 files changed, 1 insertions, 0 deletions
diff --git a/grammar/lexer.l b/grammar/lexer.l
index 657c817f..172d4baf 100644
--- a/grammar/lexer.l
+++ b/grammar/lexer.l
@@ -106,6 +106,7 @@ int fileno(FILE *stream);
<EXPR>"/" |
<EXPR>"%" |
<EXPR>"+" |
+<EXPR>"&" |
<EXPR>"-" |
<EXPR>"(" |
<EXPR>")" { return yytext[0]; }