FileUtils.read_file has two return paths with different newline semantics.
The primary path, open(file_path, encoding=encoding).read(), uses the default
newline=None and therefore applies universal newlines, so CR never reaches
callers. The charset_normalizer fallback decodes the raw bytes instead
(match.raw.decode(match.encoding)), which performs no newline translation, so
any file that fails to decode with the project's configured encoding re-enters
Serena carrying its CR characters.
Normalize to LF at the fallback's return, matching the primary path.
Scott McLeod