2 files changed, 7 insertions, 0 deletions
diff --git a/Misc/ACKS b/Misc/ACKS
index c66edb7..7f7296e 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -796,6 +796,7 @@ Ilya Sandler
 Mark Sapiro
 Ty Sarna
 Ben Sayer
+sbt
 Andrew Schaaf
 Michael Scharf
 Andreas Schawo
diff --git a/Misc/NEWS b/Misc/NEWS
index c3765dd..4e43b45 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -80,6 +80,12 @@ Core and Builtins
 Library
 -------
 
+- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is
+  raised when the wrapped raw file is non-blocking and the write would block.
+  Previous code assumed that the raw write() would raise BlockingIOError, but
+  RawIOBase.write() is defined to returned None when the call would block.
+  Patch by sbt.
+
 - Issue #13358: HTMLParser now calls handle_data only once for each CDATA.
 
 - Issue #4147: minidom's toprettyxml no longer adds whitespace around a text