From f1017988ec4c6175b101dbde47fb06b75d205c70 Mon Sep 17 00:00:00 2001
From: Jeff Williams <jeffrey.l.williams@gmail.com>
Date: Thu, 6 Jul 2017 20:56:57 -0700
Subject: [PATCH] fix crash when the author tag is empty (#1289)

---
 lib/jsdoc/util/templateHelper.js        | 18 +++++++++++-------
 test/specs/jsdoc/util/templateHelper.js |  8 ++++++++
 2 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/lib/jsdoc/util/templateHelper.js b/lib/jsdoc/util/templateHelper.js
index cdef6e16..b40e0ea7 100644
--- a/lib/jsdoc/util/templateHelper.js
+++ b/lib/jsdoc/util/templateHelper.js
@@ -567,14 +567,18 @@ exports.resolveLinks = function(str) {
 
 /** Convert tag text like "Jane Doe <jdoe@example.org>" into a mailto link */
 exports.resolveAuthorLinks = function(str) {
-    var author;
-    var matches = str.match(/^\s?([\s\S]+)\b\s+<(\S+@\S+)>\s?$/);
+    var author = '';
+    var matches;
 
-    if (matches && matches.length === 3) {
-        author = '<a href="mailto:' + matches[2] + '">' + htmlsafe(matches[1]) + '</a>';
-    }
-    else {
-        author = htmlsafe(str);
+    if (str) {
+        matches = str.match(/^\s?([\s\S]+)\b\s+<(\S+@\S+)>\s?$/);
+
+        if (matches && matches.length === 3) {
+            author = '<a href="mailto:' + matches[2] + '">' + htmlsafe(matches[1]) + '</a>';
+        }
+        else {
+            author = htmlsafe(str);
+        }
     }
 
     return author;
diff --git a/test/specs/jsdoc/util/templateHelper.js b/test/specs/jsdoc/util/templateHelper.js
index 137fe1a5..60be0437 100644
--- a/test/specs/jsdoc/util/templateHelper.js
+++ b/test/specs/jsdoc/util/templateHelper.js
@@ -1840,6 +1840,14 @@ describe("jsdoc/util/templateHelper", function() {
     });
 
     describe("resolveAuthorLinks", function() {
+        it('should not crash JSDoc if no text is specified', function() {
+            function resolve() {
+                helper.resolveAuthorLinks();
+            }
+
+            expect(resolve).not.toThrow();
+        });
+
         // convert Jane Doe <jdoe@example.org> to a mailto link.
         it('should convert email addresses in angle brackets *after* a name to mailto links', function() {
             var str = ' John Doe  <asdf.fdsa-2@gmail.com> ';