From 6cbe8c1393a830622ebdd6a922c80100fab36837 Mon Sep 17 00:00:00 2001
From: "Jorj X. McKie" <jorj.x.mckie@outlook.de>
Date: Sun, 27 Sep 2026 11:40:56 -0400
Subject: [PATCH] Fix 5140

---
 src/utils.py       |  5 ++---
 tests/test_5140.py | 19 +++++++++++++++++++
 2 files changed, 21 insertions(+), 3 deletions(-)
 create mode 100644 tests/test_5140.py

diff --git a/src/utils.py b/src/utils.py
index 6afdb45e0..a0cb35413 100644
--- a/src/utils.py
+++ b/src/utils.py
@@ -954,9 +954,8 @@ def get_label_pno(pgNo, labels):
     Returns:
         The label (str) of the page number. Errors return an empty string.
     """
-    # Jorj McKie, 2021-01-06
-
-    item = [x for x in labels if x[0] <= pgNo][-1]
+    l = [x for x in labels if x[0] <= pgNo]
+    item = (pgNo, "") if not l else l[-1]
     rule = rule_dict(item)
     prefix = rule.get("prefix", "")
     style = rule.get("style", "")
diff --git a/tests/test_5140.py b/tests/test_5140.py
new file mode 100644
index 000000000..fe4ee4d2f
--- /dev/null
+++ b/tests/test_5140.py
@@ -0,0 +1,19 @@
+import pymupdf
+
+
+def test_5140():
+    doc = pymupdf.open()
+    doc.new_page()
+    doc.new_page()
+    doc.set_page_labels(
+        [
+            {
+                "startpage": 1,
+                "prefix": "",
+                "firstpagenum": 1,
+                "style": "D",
+            }
+        ]
+    )
+    assert doc[0].get_label() == ""  # IndexError: list index out of range
+    assert doc[1].get_label() == "1"