From a9432652573f63077ceb1abbe8d901f765bac6ac Mon Sep 17 00:00:00 2001
From: yangdx <gzdaniel@me.com>
Date: Sat, 26 Jul 2025 10:21:32 +0800
Subject: [PATCH] fix: preserve file path order in build_file_path function

---
 lightrag/operate.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/lightrag/operate.py b/lightrag/operate.py
index 94d6b07c..78e11c22 100644
--- a/lightrag/operate.py
+++ b/lightrag/operate.py
@@ -3136,10 +3136,8 @@ def build_file_path(already_file_paths, data_list, target):
     # set: deduplication
     file_paths_set = {fp for fp in already_file_paths if fp}
 
-    # string: deduplication sorted
-    file_paths = GRAPH_FIELD_SEP.join(
-        list(dict.fromkeys(fp for fp in already_file_paths if fp))
-    )
+    # string: filter empty value and keep file order in already_file_paths
+    file_paths = GRAPH_FIELD_SEP.join(fp for fp in already_file_paths if fp)
     # ignored file_paths
     file_paths_ignore = ""
     # add file_paths