From d2a0cbdec345ffe5cc803683b30971b5786a5188 Mon Sep 17 00:00:00 2001
From: Domenic Denicola <d@domenic.me>
Date: Wed, 23 Dec 2015 19:31:15 -0500
Subject: [PATCH] Encourage logging pattern="" compilation failures

Closes #439, where we settled on this as a solution to the potential back-compat problem of more patterns failing to compile now that the "u" flag is specified.
---
 source | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source b/source
index 10e7613461d..5157be4b265 100644
--- a/source
+++ b/source
@@ -48341,6 +48341,9 @@ ldh-str       = &lt; as defined in <a href="https://tools.ietf.org/html/rfc1034#
   value doesn't compile successfully, then the element has no <span>compiled pattern regular
   expression</span>. <ref spec=ECMA262></p>
 
+  <p class="note">If the value doesn't compile successfully, user agents are encouraged to log this
+  fact in a developer console, to aid debugging.</p>
+
   <p><strong>Constraint validation</strong>: If the element's <span
   data-x="concept-fe-value">value</span> is not the empty string, and either the element's <code
   data-x="attr-input-multiple">multiple</code> attribute is not specified or it <span data-x="do not
@@ -118271,6 +118274,7 @@ INSERT INTERFACES HERE
   Tom Pike,
   Tommy Thorsen,
   Tony Ross,
+  Tooru Fujisawa,
   Travis Leithead,
   Trevor Saunders,
   Tyler Close,