From e4767b74895653fe197f3a8d298182a075822fc1 Mon Sep 17 00:00:00 2001
From: Dan Baston <dbaston@gmail.com>
Date: Thu, 22 Oct 2026 21:40:43 -0400
Subject: [PATCH] Postgres: avoid stripping backslashes from string list
 elements

---
 autotest/ogr/ogr_pg.py            | 21 +++++++++++++++++++++
 ogr/ogrsf_frmts/pg/ogrpglayer.cpp |  9 ++++++---
 2 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/autotest/ogr/ogr_pg.py b/autotest/ogr/ogr_pg.py
index 5f68b2275a62..621d082fb6c8 100755
--- a/autotest/ogr/ogr_pg.py
+++ b/autotest/ogr/ogr_pg.py
@@ -6429,3 +6429,24 @@ def test_ogr_pg_geometry_intersection_spatial_filter(
         assert f.GetGeometryRef().ExportToWkt() == "POINT (0.5 0.5)"
         f = sql_lyr.GetNextFeature()
         assert f is None
+
+
+###############################################################################
+# Test backslash characters are properly read when reading string lists
+
+
+@only_without_postgis
+def test_ogr_pg_string_list_escaping(pg_ds):
+
+    paths = [r"c:\data", r'c:\"Program Files"']
+
+    lyr = pg_ds.CreateLayer("paths")
+    lyr.CreateField(ogr.FieldDefn("txt", ogr.OFTStringList))
+    f = ogr.Feature(lyr.GetLayerDefn())
+    f["txt"] = paths
+    lyr.CreateFeature(f)
+
+    lyr.ResetReading()
+
+    f_out = lyr.GetNextFeature()
+    assert f_out["txt"] == paths
diff --git a/ogr/ogrsf_frmts/pg/ogrpglayer.cpp b/ogr/ogrsf_frmts/pg/ogrpglayer.cpp
index 27e759d1d49d..b62dc88dd63f 100644
--- a/ogr/ogrsf_frmts/pg/ogrpglayer.cpp
+++ b/ogr/ogrsf_frmts/pg/ogrpglayer.cpp
@@ -404,11 +404,14 @@ static void OGRPGTokenizeStringListUnescapeToken(char *pszToken)
     }
 
     int iSrc = 0, iDst = 0;
-    for (iSrc = 0; pszToken[iSrc] != '\0'; iSrc++)
+    while (pszToken[iSrc] != '\0')
     {
         pszToken[iDst] = pszToken[iSrc];
-        if (pszToken[iSrc] != '\\')
-            iDst++;
+        if (pszToken[iSrc] == '\\' && pszToken[iSrc + 1] != '\0')
+        {
+            iSrc++;
+        }
+        pszToken[iDst++] = pszToken[iSrc++];
     }
     pszToken[iDst] = '\0';
 }