2 files changed, 6 insertions, 0 deletions
diff --git a/Misc/ACKS b/Misc/ACKS
index 3421585..ab268c6 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -118,6 +118,7 @@ Terry Carroll
 Donn Cave
 Per Cederqvist
 Octavian Cerna
+Pascal Chambon
 Hye-Shik Chang
 Jeffrey Chang
 Mitch Chapman
diff --git a/Misc/NEWS b/Misc/NEWS
index 58beede..18770a7 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -76,6 +76,11 @@ Core and Builtins
 Library
 -------
 
+- Issue #6939: Fix file I/O objects in the `io` module to keep the original
+  file position when calling `truncate()`.  It would previously change the
+  file position to the given argument, which goes against the tradition of
+  ftruncate() and other truncation APIs.  Patch by Pascal Chambon.
+
 - Issue #7792: Registering non-classes to ABCs raised an obscure error.
 
 - Issue #7785: Don't accept bytes in FileIO.write().