doc: core.ignoreStat clarify the --assume-unchanged effect

The assume-unchanged bit can be misunderstood. Be assertive about
the expectation that file changes should update that flag.

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/config.txt b/Documentation/config.txt
index f615a5c35442ead9d8718f187c80f6a81289ebc9..2415d58c038c5ab0b694c36f7971ff7d484ec0df 100644 (file)
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -366,10 +366,11 @@ proxy use, while defaulting to a common proxy for external domains.
 core.ignoreStat::
        If true, commands which modify both the working tree and the index
        will mark the updated paths with the "assume unchanged" bit in the
-       index. These marked files are then assumed to stay unchanged in the
-       working tree, until you mark them otherwise manually - Git will not
-       detect the file changes by lstat() calls. This is useful on systems
-       where those are very slow, such as Microsoft Windows.
+       index. These marked files are then expected to stay unchanged in the
+       working tree. If you change them you should mark their update manually.
+       Git will normally not detect the file changes by lstat() calls.
+       This is useful on systems where those calls are very slow, such as
+       cifs/Microsoft Windows.
        See linkgit:git-update-index[1].
        False by default.