add tests/math.g

darcs-hash:20090111051653-5007d-38e77803038f5cb05adcc6fe982742b700abb454.gz

diff --git a/tests/math.g b/tests/math.g
new file mode 100644 (file)
index 0000000..4573929
--- /dev/null
+++ b/tests/math.g
@@ -0,0 +1,6 @@
+
+Expr = Plus::  Expr "+" Expr
+     | Minus:: Expr "-" Expr
+     | Num
+
+Num:: = [0-9]++