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-rw-r--r--Modules/main.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Modules/main.c b/Modules/main.c
index 556a67a..58df084 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -230,7 +230,7 @@ Py_Main(argc, argv)
else if (Py_InteractiveFlag) {
#ifdef MS_WINDOWS
/* Doesn't have to have line-buffered -- use unbuffered */
- setvbuf(stdin, (char *)NULL, _IONBF, BUFSIZ);
+ /* Any set[v]buf(stdin, ...) screws up Tkinter :-( */
setvbuf(stdout, (char *)NULL, _IONBF, BUFSIZ);
#else /* !MS_WINDOWS */
#ifdef HAVE_SETVBUF