From 4a56c76901a62a4d6729ecea163a4007eb30a8c0 Mon Sep 17 00:00:00 2001
From: Laurent Cozic <laurent@cozic.net>
Date: Tue, 20 Feb 2018 18:07:31 +0000
Subject: [PATCH] Electron: Fixes #247: Unreadable error messages when checking
 for updates

---
 ElectronClient/app/checkForUpdates.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/ElectronClient/app/checkForUpdates.js b/ElectronClient/app/checkForUpdates.js
index af1687af1..ef5eb3692 100644
--- a/ElectronClient/app/checkForUpdates.js
+++ b/ElectronClient/app/checkForUpdates.js
@@ -46,7 +46,13 @@ function onCheckEnded() {
 autoUpdater.on('error', (error) => {
 	autoUpdateLogger_.error(error);
 	if (checkInBackground_) return onCheckEnded();
-	showErrorMessageBox(error == null ? "unknown" : (error.stack || error).toString())
+
+	let msg = error == null ? "unknown" : (error.stack || error).toString();
+	// Error messages can be very long even without stack trace so shorten 
+	// then so that the dialog box doesn't take the whole screen.
+	msg = msg.substr(0,512).replace(/\\n/g, '\n');
+	showErrorMessageBox(msg)
+	
 	onCheckEnded();
 })