From 40d35f4cfb1ba3124af5f2ce270db9f4c7b59cd4 Mon Sep 17 00:00:00 2001
From: Anton Tarasenko <dkanus@gmail.com>
Date: Tue, 4 Oct 2022 03:45:21 +0700
Subject: [PATCH] Fix `ResolveCustomSource()` not always copying argument on
 failure

---
 sources/Aliases/AliasesAPI.uc | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sources/Aliases/AliasesAPI.uc b/sources/Aliases/AliasesAPI.uc
index bb62091..fc684d8 100644
--- a/sources/Aliases/AliasesAPI.uc
+++ b/sources/Aliases/AliasesAPI.uc
@@ -349,7 +349,11 @@ public final function Text ResolveCustom(
     local BaseAliasSource customSource;
 
     customSource = GetCustomSource(sourceName);
-    if (customSource == none) {
+    if (customSource == none)
+    {
+        if (copyOnFailure && alias != none) {
+            return alias.Copy();
+        }
         return none;
     }
     return ResolveWithSource(alias, customSource, copyOnFailure);