O_TRUNC is needed in case file exists.

diff --git a/usr.bin/tmux/cmd-save-buffer.c b/usr.bin/tmux/cmd-save-buffer.c
index cb96812..96194a5 100644 (file)
--- a/usr.bin/tmux/cmd-save-buffer.c
+++ b/usr.bin/tmux/cmd-save-buffer.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: cmd-save-buffer.c,v 1.51 2020/07/21 05:24:33 nicm Exp $ */
+/* $OpenBSD: cmd-save-buffer.c,v 1.52 2021/02/11 09:03:38 nicm Exp $ */
 
 /*
  * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
@@ -109,7 +109,7 @@ cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item)
        if (args_has(args, 'a'))
                flags = O_APPEND;
        else
-               flags = 0;
+               flags = O_TRUNC;
        file_write(cmdq_get_client(item), path, flags, bufdata, bufsize,
            cmd_save_buffer_done, item);
        free(path);