From 3ce1562d9a7709913595574a4cf791ea3de61113 Mon Sep 17 00:00:00 2001
From: labkey-nicka <nickk@labkey.com>
Date: Mon, 13 Oct 2025 22:18:05 -0700
Subject: [PATCH] Issue 54094: escape form field names ending with "\"

---
 api/src/org/labkey/api/query/QueryUpdateForm.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/api/src/org/labkey/api/query/QueryUpdateForm.java b/api/src/org/labkey/api/query/QueryUpdateForm.java
index 5a3db0daf78..f3ad03b2360 100644
--- a/api/src/org/labkey/api/query/QueryUpdateForm.java
+++ b/api/src/org/labkey/api/query/QueryUpdateForm.java
@@ -97,8 +97,9 @@ else if (c == BACKSLASH)
                 sb.append(c);
         }
 
+        // Issue 54094: Ensure it works when backslash is the last character
         if (escaping)
-            throw new IllegalArgumentException("Invalid escape at end of encoded name: " + columnName);
+            sb.append(BACKSLASH);
 
         return getTable().getColumn(sb.toString());
     }