From 8ba1f03a71245cb4293ef36a2422581ab34bbbe9 Mon Sep 17 00:00:00 2001
From: Sami Samhuri <sami@samhuri.net>
Date: Mon, 16 Mar 2015 18:02:34 -0700
Subject: [PATCH] warn about possible misuse of %:: or %::: modifiers

---
 strftime.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/strftime.js b/strftime.js
index 67651c2..e20e4c1 100644
--- a/strftime.js
+++ b/strftime.js
@@ -211,6 +211,11 @@
                     }
                     // ':'
                     else if (currentCharCode === 58) {
+                      if (extendedTZ) {
+                        if (typeof console !== 'undefined' && typeof console.warn == 'function') {
+                          console.warn("[WARNING] detected use of unsupported %:: or %::: modifiers to strftime");
+                        }
+                      }
                       extendedTZ = true;
                       continue;
                     }