From 3f68a0d4e5fb34c4028b83709c5f27f3c33da22f Mon Sep 17 00:00:00 2001
From: UmranPros <152087084+umran666@users.noreply.github.com>
Date: Thu, 18 Jun 2026 18:16:43 +0530
Subject: [PATCH] fix: resolve UnicodeEncodeError on Windows during model
 evaluation (#389)

* fix: ensure utf-8 encoding for standard output and error to prevent UnicodeEncodeError on Windows

* fix: address bot review feedback

* refactor: deduplicate stream reconfiguration loop
---
 src/heretic/main.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/heretic/main.py b/src/heretic/main.py
index fbc18c3..d460b53 100644
--- a/src/heretic/main.py
+++ b/src/heretic/main.py
@@ -5,6 +5,14 @@
 
 import sys
 
+# Ensure standard output/error use UTF-8 instead of system default charmap (e.g. cp1252 on Windows).
+for stream in (sys.stdout, sys.stderr):
+    if (
+        hasattr(stream, "reconfigure")
+        and (getattr(stream, "encoding", "") or "").lower() != "utf-8"
+    ):
+        stream.reconfigure(encoding="utf-8")  # type: ignore
+
 from .config import Settings