From 4eece88e18fe8caff65878495861ca90ec850731 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Sun, 27 Apr 2014 22:08:40 -0700
Subject: [PATCH] Remove duplicate set insert

---
 src/compiler/build_tables/item_set_closure.cc | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/compiler/build_tables/item_set_closure.cc b/src/compiler/build_tables/item_set_closure.cc
index d9a71ab9..9f215521 100644
--- a/src/compiler/build_tables/item_set_closure.cc
+++ b/src/compiler/build_tables/item_set_closure.cc
@@ -21,7 +21,6 @@ namespace tree_sitter {
                 items_to_add.pop_back();
                 auto insertion_result = result.insert(item);
                 if (insertion_result.second) {
-                    result.insert(item);
                     for (const auto &pair : follow_sets(item, grammar)) {
                         const ISymbol &non_terminal = pair.first;
                         const set<ISymbol> &terminals = pair.second;