From 6ddcdfb403a2048180dee9503a41d173d692233e Mon Sep 17 00:00:00 2001
From: Kenneth Hsu <kennethhsu@gmail.com>
Date: Sun, 27 Dec 2020 17:21:58 -0800
Subject: [PATCH] Exclude XDG_CACHE_HOME cache directory on Linux if defined.

This fixes #3633.
---
 Duplicati/Library/Utility/FilterGroups.cs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/Duplicati/Library/Utility/FilterGroups.cs b/Duplicati/Library/Utility/FilterGroups.cs
index 9ed80e069..e59255453 100644
--- a/Duplicati/Library/Utility/FilterGroups.cs
+++ b/Duplicati/Library/Utility/FilterGroups.cs
@@ -547,7 +547,7 @@ namespace Duplicati.Library.Utility
                 yield return FilterGroups.CreateWildcardFilter(@"/sbin/");
                 yield return FilterGroups.CreateWildcardFilter(@"/var/");
             }
-                
+
             if (group.HasFlag(FilterGroup.TemporaryFiles))
             {
                 yield return FilterGroups.CreateWildcardFilter(@"*/lost+found/");
@@ -556,6 +556,11 @@ namespace Duplicati.Library.Utility
             }
             if (group.HasFlag(FilterGroup.CacheFiles))
             {
+                string cacheHome = Environment.GetEnvironmentVariable("XDG_CACHE_HOME");
+                if (cacheHome != null)
+                {
+                    yield return FilterGroups.CreateWildcardFilter(cacheHome);
+                }
                 yield return FilterGroups.CreateWildcardFilter(@"*/.cache/");
                 yield return FilterGroups.CreateWildcardFilter(@"*/.config/google-chrome/Default/Cookies");
                 yield return FilterGroups.CreateWildcardFilter(@"*/.config/google-chrome/Default/Cookies-journal");