From 22644c41da6ed1bc1a9692e30bc4b20d7e0e3200 Mon Sep 17 00:00:00 2001
From: Florian Bruhin <git@the-compiler.org>
Date: Thu, 7 Jun 2018 13:31:34 +0200
Subject: Add a workaround for chrome-error:// loops on Qt 5.11

See #3661

(cherry picked from commit 0c0d204fd41230291739e09f8e03f6781c4fa67f)
---
 qutebrowser/browser/webengine/webenginetab.py | 6 ++++++
 qutebrowser/html/error.html                   | 2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/qutebrowser/browser/webengine/webenginetab.py b/qutebrowser/browser/webengine/webenginetab.py
index 87fbb1fc7..5cc87091a 100644
--- a/qutebrowser/browser/webengine/webenginetab.py
+++ b/qutebrowser/browser/webengine/webenginetab.py
@@ -1021,6 +1021,12 @@ class WebEngineTab(browsertab.AbstractTab):
         if not ok and not js_enabled:
             self.dump_async(self._error_page_workaround)
 
+        if (not ok and
+                self.url() == QUrl('chrome-error://chromewebdata/') and
+                qtutils.version_check('5.11', compiled=False)):
+            # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-63378
+            self._show_error_page(QUrl(), "Unknown URL scheme")
+
         if ok and self._reload_url is not None:
             # WORKAROUND for https://bugreports.qt.io/browse/QTBUG-66656
             log.config.debug(
diff --git a/qutebrowser/html/error.html b/qutebrowser/html/error.html
index 615e4ba8b..b3e6f576e 100644
--- a/qutebrowser/html/error.html
+++ b/qutebrowser/html/error.html
@@ -74,7 +74,7 @@ function tryagain()
 			</td>
 			<td style="padding-left: 40px;">
 				<h1>Unable to load page</h1>
-				Error while opening {{ url }}<br>
+				Error while opening {{ url | default('page', true) }}<br>
 				<p id="error-message-text" style="color: #a31a1a;">{{ error }}</p><br><br>
 
 				<form name="bl">
-- 
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