From 527370f6004c11538d4b3dc0e7f92dc5a2c3dd10 Mon Sep 17 00:00:00 2001
From: AC <ac@fabtek.cn>
Date: Wed, 7 Oct 2026 18:27:08 +0800
Subject: [PATCH] fix: treat subtitle correction values as literal text

---
 tests/tools/test_subtitle_corrections.py | 29 ++++++++++++++++++++++++
 tools/subtitle/subtitle_gen.py           |  2 +-
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 tests/tools/test_subtitle_corrections.py

diff --git a/tests/tools/test_subtitle_corrections.py b/tests/tools/test_subtitle_corrections.py
new file mode 100644
index 0000000000..d4cf8c01be
--- /dev/null
+++ b/tests/tools/test_subtitle_corrections.py
@@ -0,0 +1,29 @@
+"""Correction values are literal text, not regular-expression replacements."""
+
+import pytest
+
+from tools.subtitle.subtitle_gen import SubtitleGen
+
+
+@pytest.mark.parametrize("replacement", [r"C:\Users\speaker", r"\1", r"line\ntext"])
+def test_segment_corrections_preserve_backslashes(tmp_path, replacement):
+    segments = [{"text": "Use folder.", "start": 0, "end": 1}]
+    output = tmp_path / "captions.srt"
+    result = SubtitleGen().execute({
+        "segments": segments,
+        "corrections": {"folder": replacement},
+        "output_path": str(output),
+    })
+    assert result.success, result.error
+    assert f"Use {replacement}." in output.read_text()
+    assert segments[0]["text"] == "Use folder."
+
+
+def test_segment_and_word_corrections_agree():
+    replacement = r"C:\Users\speaker"
+    segments = [
+        {"text": "FOLDER", "start": 0, "end": 1},
+        {"words": [{"word": "FOLDER", "start": 1, "end": 2}]},
+    ]
+    corrected = SubtitleGen._apply_corrections(segments, {"folder": replacement})
+    assert corrected[0]["text"] == corrected[1]["words"][0]["word"] == replacement
diff --git a/tools/subtitle/subtitle_gen.py b/tools/subtitle/subtitle_gen.py
index a22f67d828..4ecd527a7a 100644
--- a/tools/subtitle/subtitle_gen.py
+++ b/tools/subtitle/subtitle_gen.py
@@ -158,7 +158,7 @@ def _apply_corrections(
                     import re as _re
                     seg["text"] = _re.sub(
                         r"\b" + _re.escape(wrong) + r"\b",
-                        right,
+                        lambda match, replacement=right: replacement,
                         seg["text"],
                         flags=_re.IGNORECASE,
                     )