From 345e344377ee49d23ba843e9c1cf74d6a8ed49c4 Mon Sep 17 00:00:00 2001
From: Axel Hecht <axel@pike.org>
Date: Thu, 5 Apr 2018 14:39:25 +0200
Subject: [PATCH] Tests for issue 158

---
 .../prepare_grammar/parse_regex_test.cc       | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/test/compiler/prepare_grammar/parse_regex_test.cc b/test/compiler/prepare_grammar/parse_regex_test.cc
index a252654b..ef4f4857 100644
--- a/test/compiler/prepare_grammar/parse_regex_test.cc
+++ b/test/compiler/prepare_grammar/parse_regex_test.cc
@@ -150,6 +150,27 @@ describe("parse_regex", []() {
       })
     },
 
+    {
+      "escaped brackets",
+      "\\[\\]",
+      Rule::seq({
+        CharacterSet{{'['}},
+        CharacterSet{{']'}},
+      })
+    },
+
+    {
+      "escaped brackets in choice",
+      "[\\[\\]]",
+      CharacterSet{{'[', ']'}}
+    },
+
+    {
+      "escaped brackets in range",
+      "[\\[-\\]]",
+      CharacterSet{{'[', '\\', ']'}}
+    },
+
     {
       "escaped periods",
       "a\\.",