Commit 647d8794 authored by Duy Nguyen's avatar Duy Nguyen Committed by Junio C Hamano

update-index: list supported idx versions and their features

Signed-off-by: Duy Nguyen's avatarNguyễn Thái Ngọc Duy <[email protected]>
Reviewed-by: default avatarJonathan Nieder <[email protected]>
Signed-off-by: default avatarJunio C Hamano <[email protected]>
parent b82a7b5b
......@@ -145,7 +145,15 @@ you will need to handle the situation manually.
--index-version <n>::
Write the resulting index out in the named on-disk format version.
The current default version is 2.
Supported versions are 2, 3 and 4. The current default version is 2
or 3, depending on whether extra features are used, such as
`git add -N`.
+
Version 4 performs a simple pathname compression that reduces index
size by 30%-50% on large repositories, which results in faster load
time. Version 4 is relatively young (first released in in 1.8.0 in
October 2012). Other Git implementations such as JGit and libgit2
may not support it yet.
-z::
Only meaningful with `--stdin` or `--index-info`; paths are
......
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