From bdb10e7afc7d7fbe9934316a3ed24c0707140241 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sun, 5 Sep 2021 09:50:04 -0400
Subject: [PATCH] test duplicate rules

---
 spec/imbecile_spec.rb | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/spec/imbecile_spec.rb b/spec/imbecile_spec.rb
index 863590b..6ac7160 100644
--- a/spec/imbecile_spec.rb
+++ b/spec/imbecile_spec.rb
@@ -61,6 +61,22 @@ B: [zero] <<
 >>
 B: [one] <<
 >>
+EOF
+    build_parser
+  end
+
+  it "generates a parser with duplicate rules" do
+    write_grammar <<EOF
+token a
+token b
+Start: [R1] <<
+>>
+Start: [R2] <<
+>>
+R1: [a b] <<
+>>
+R2: [a b] <<
+>>
 EOF
     build_parser
   end