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fix: safe formatting for surrogates in pluggy tracing #716

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fix: safe formatting for surrogates in pluggy tracing #716

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8 changes: 6 additions & 2 deletions src/pluggy/_tracing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -29,13 +29,17 @@ def _format_message(self, tags: Sequence[str], args: Sequence[object]) -> str:
else:
extra = {}

content = " ".join(map(str, args))
def _safe(obj: object) -> str:
text = str(obj)
return text.encode("utf-8", "backslashreplace").decode("utf-8")

content = " ".join(map(_safe, args))
indent = " " * self.indent

lines = [f"{indent}{content} [{':'.join(tags)}]\n"]

for name, value in extra.items():
lines.append(f"{indent} {name}: {value}\n")
lines.append(f"{indent} {name}: {_safe(value)}\n")

return "".join(lines)

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