bpo-22069: Update TextIO documentation (GH-6609)

Clarify that flush is implied when the call to write contains a newline character.
(cherry picked from commit 7ffd4c58fae08b29259eebd6cbcd2287820b14e8)

Co-authored-by: Elena Oat <oat.elena@gmail.com>

diff --git a/Doc/library/io.rst b/Doc/library/io.rst
index b99324cdb38ad6582037875dde8ddb5659bfd7cb..300041dc3bb176b40d7dc084cb218ed7688cab20 100644 (file)
--- a/Doc/library/io.rst
+++ b/Doc/library/io.rst
@@ -809,7 +809,7 @@ Text I/O
      the given string.
 
    If *line_buffering* is ``True``, :meth:`flush` is implied when a call to
-   write contains a newline character.
+   write contains a newline character or a carriage return.
 
    :class:`TextIOWrapper` provides one attribute in addition to those of
    :class:`TextIOBase` and its parents: