From 72a2f418c8156eefa40532742768a21cdaa9542b Mon Sep 17 00:00:00 2001
From: Kevin Jin <goldstar.kevin@gmail.com>
Date: Sun, 27 Sep 2015 10:41:58 -0400
Subject: [PATCH 1/3] Pass through unrecognized directives

For compatibility with strftime() on Unix, preserve the percent sign for unrecognized directives when appending to resultString.
---
 strftime.js | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/strftime.js b/strftime.js
index d34ad58..8deb8b1 100644
--- a/strftime.js
+++ b/strftime.js
@@ -494,6 +494,8 @@
                             break;
 
                         default:
+                            if (isInScope)
+                                resultString += '%';
                             resultString += format[i];
                             break;
                     }

From 58f5c3fee82a5f48eb6b02349f35ecf3f9133327 Mon Sep 17 00:00:00 2001
From: Kevin Jin <goldstar.kevin@gmail.com>
Date: Sun, 27 Sep 2015 11:03:32 -0400
Subject: [PATCH 2/3] Support literal percent sign

By the spec for strftime(3), '%%' in the format string should be replaced with '%' in the resultString.
---
 strftime.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/strftime.js b/strftime.js
index 8deb8b1..a3420f2 100644
--- a/strftime.js
+++ b/strftime.js
@@ -227,6 +227,12 @@
 
                         // Examples for new Date(0) in GMT
 
+                        // '%'
+                        // case '%':
+                        case 37:
+                            resultString += '%';
+                            break;
+
                         // 'Thursday'
                         // case 'A':
                         case 65:

From f5bb0982211ded427f27ebf8511d7507fea8bd9b Mon Sep 17 00:00:00 2001
From: Kevin Jin <goldstar.kevin@gmail.com>
Date: Fri, 2 Oct 2015 21:39:02 -0400
Subject: [PATCH 3/3] Consistency with existing code Add test for unrecognized
 directives to test.js. Add braces around if statement.

---
 strftime.js | 3 ++-
 test.js     | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/strftime.js b/strftime.js
index a3420f2..8cc8f35 100644
--- a/strftime.js
+++ b/strftime.js
@@ -500,8 +500,9 @@
                             break;
 
                         default:
-                            if (isInScope)
+                            if (isInScope) {
                                 resultString += '%';
+                            }
                             resultString += format[i];
                             break;
                     }
diff --git a/test.js b/test.js
index 66db148..17efa56 100755
--- a/test.js
+++ b/test.js
@@ -121,7 +121,8 @@ assert.format('%y', '11');
 assert.format('%Z', null, 'GMT');
 assert.format('%z', null, '+0000');
 assert.format('%:z', null, '+00:00');
-assert.format('%%', '%'); // any other char
+assert.format('%%', '%'); // literal percent sign
+assert.format('%g', '%g'); // unrecognized directive
 assert.format('%F %T', null, '1970-01-01 00:00:00', new Date(0));
 assert.format('%U', null, '12', new Date('2017-03-25 00:00:00 +0000'));
 assert.format('%U', null, '13', new Date('2017-03-26 00:00:00 +0000'));