Fix regex brackets matching bug (#2179)

Fixes #2178.

JerryScript-DCO-1.0-Signed-off-by: Dániel Bátyai dbatyai@inf.u-szeged.hu
JerryScript-DCO-1.0-Signed-off-by: Szilard Ledan szledan@inf.u-szeged.hu

tests/jerry/regression-test-issue-2178.js

@@ -0,0 +1,25 @@
+// Copyright JS Foundation and other contributors, http://js.foundation
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Testcase from bugreport (issue: #2178).
+bad = "'detailForm','detailForm:j_id166', []);\" ><img alt=\"Export to XLS format\" />\n</a>"
+good = "'detailForm','detailForm:j_id166');\" ><img alt=\"Export to XLS format\" />\n</a>"
+r = /'(detailForm:j_id\d+)'[^>]+>[^>]+Export to XLS format/;
+assert(!!good.match(r) && !!bad.match(r));
+
+// Similar testcases.
+var regexPatternCharacters = ['^', '$', '\\', '.', '*', '+', '?', '(', ')', '[', ']', '{', '}'];
+regexPatternCharacters.forEach(function (str) {
+  assert(str.match(/[^>]/) == str);
+})