From c25c0527a61de21963aa4bfa44135995be2dbbf9 Mon Sep 17 00:00:00 2001
From: Daniel Hahler <git@thequod.de>
Date: Wed, 11 May 2016 21:50:02 +0200
Subject: [PATCH] gears.surface: add a traceback for "Failed to load" errors

This is useful to see where the error is coming from.
---
 lib/gears/surface.lua | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/lib/gears/surface.lua b/lib/gears/surface.lua
index 3cb18565..1c4800e6 100644
--- a/lib/gears/surface.lua
+++ b/lib/gears/surface.lua
@@ -92,7 +92,8 @@ local function do_load_and_handle_errors(_surface, func)
     if result then
         return result
     end
-    gdebug.print_error("Failed to load '" .. tostring(_surface) .. "': " .. tostring(err))
+    gdebug.print_error(debug.traceback(
+        "Failed to load '" .. tostring(_surface) .. "': " .. tostring(err)))
     return get_default()
 end