From 392817432bdc16cffc3bc725b208253aed68dfc3 Mon Sep 17 00:00:00 2001
From: Andrey <frimanservice@gmail.com>
Date: Fri, 4 Sep 2026 12:23:07 +0300
Subject: [PATCH] =?UTF-8?q?=D0=9F=D0=BE=D0=B4=D0=B4=D0=B5=D1=80=D0=B6?=
 =?UTF-8?q?=D0=B0=D1=82=D1=8C=20=D0=BD=D0=B0=D1=81=D1=82=D1=80=D0=BE=D0=B9?=
 =?UTF-8?q?=D0=BA=D0=B8=20=D1=82=D1=80=D0=B5=D0=BD=D0=B4=D0=BE=D0=B2=20?=
 =?UTF-8?q?=D0=B2=20Python=203.8?=
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---
 python/protocan/trends.py | 3 ++-
 python/tests/test_plot.py | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/python/protocan/trends.py b/python/protocan/trends.py
index 22e2daa..e047e1b 100644
--- a/python/protocan/trends.py
+++ b/python/protocan/trends.py
@@ -129,7 +129,8 @@ def encode_settings(settings: Mapping[str, list[TrendSignal]]) -> str:
 def decode_settings(text: str) -> dict[str, list[TrendSignal]]:
     if len(text.encode("utf-8")) > MAX_FILE_BYTES:
         raise ValueError("Trend configuration exceeds 1 MiB")
-    root = json.loads(text.removeprefix("\ufeff"))
+    # Python 3.8 is used by the Windows 7 port; remove at most one BOM.
+    root = json.loads(text[1:] if text.startswith("\ufeff") else text)
     if not isinstance(root, dict) or root.get("format") != "setflash-trends" or type(root.get("version")) is not int or root["version"] != 1:
         raise ValueError("Unknown trend configuration format/version")
     profiles = root.get("profiles")
diff --git a/python/tests/test_plot.py b/python/tests/test_plot.py
index b229824..4470200 100644
--- a/python/tests/test_plot.py
+++ b/python/tests/test_plot.py
@@ -9,6 +9,7 @@ import unittest
 from protocan.plot import Bounds, Marker, Markers, PlotMath, Viewport
 
 
+@unittest.skipUnless(os.environ.get("SETPROTOCOL_LIBRARY"), "Set SETPROTOCOL_LIBRARY to the built C library")
 class PlotTests(unittest.TestCase):
     @classmethod
     def setUpClass(cls):