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| -rw-r--r-- | Lib/_pyio.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Lib/_pyio.py b/Lib/_pyio.py index 66cdc20a0e..b2d17e9809 100644 --- a/Lib/_pyio.py +++ b/Lib/_pyio.py @@ -1829,6 +1829,10 @@ class StringIO(TextIOWrapper): encoding="utf-8", errors="strict", newline=newline) + # Issue #5645: make universal newlines semantics the same as in the + # C version, even under Windows. + if newline is None: + self._writetranslate = False if initial_value: if not isinstance(initial_value, str): initial_value = str(initial_value) |