From a7b6adae62fbed739a46eb21cb1a454c237cab00 Mon Sep 17 00:00:00 2001
From: Howard Hinnant <howard.hinnant@gmail.com>
Date: Fri, 9 Sep 2016 20:58:39 -0400
Subject: [PATCH] Add %F to parse

---
 date.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/date.h b/date.h
index 186420d..45253f4 100644
--- a/date.h
+++ b/date.h
@@ -4157,6 +4157,20 @@ parse(std::basic_istream<CharT, Traits>& is,
                 command = true;
                 modified = false;
                 break;
+            case 'F':
+                if (command && !modified)
+                {
+                    f.get(is, 0, is, err, &tm, b, i-1);
+                    b = i+1;
+                    if ((err & ios_base::failbit) == 0)
+                    {
+                        const CharT ymd[] = {'%', 'Y', '-', '%', 'm', '-', '%', 'd'};
+                        f.get(is, 0, is, err, &tm, ymd, ymd+8);
+                    }
+                }
+                command = false;
+                modified = false;
+                break;
             case 'O':
             case 'E':
                 modified = true;