transport-helper: improve push messages

diff --git a/Documentation/git-fast-export.txt b/Documentation/git-fast-export.txt
index d6487e1ce03a9c060ae41b7b7455c442c6ea58f3..feab7a3e4ecb56aa17c32bd555e907a51001ef1f 100644 (file)
--- a/Documentation/git-fast-export.txt
+++ b/Documentation/git-fast-export.txt
@@ -66,6 +66,8 @@ produced incorrect results if you gave these options.
        incremental runs.  As <file> is only opened and truncated
        at completion, the same path can also be safely given to
        \--import-marks.
+       The file will not be written if no new object has been
+       marked/exported.
 
 --import-marks=<file>::
        Before processing any input, load the marks specified in