read-cache: add post-index-change hook

diff --git a/Documentation/git-push.txt b/Documentation/git-push.txt
index a5fc54aeabccbeac32c73a610dbee45bfb5b0746..6a8a0d958bc63db19bfa4786e85e9e14061f1661 100644 (file)
--- a/Documentation/git-push.txt
+++ b/Documentation/git-push.txt
@@ -73,6 +73,26 @@ be omitted--such a push will update a ref that `<src>` normally updates
 without any `<refspec>` on the command line.  Otherwise, missing
 `:<dst>` means to update the same ref as the `<src>`.
 +
+If <dst> doesn't start with `refs/` (e.g. `refs/heads/master`) we will
+try to infer where in `refs/*` on the destination <repository> it
+belongs based on the the type of <src> being pushed and whether <dst>
+is ambiguous.
++
+--
+* If <dst> unambiguously refers to a ref on the <repository> remote,
+  then push to that ref.
+
+* If <src> resolves to a ref starting with refs/heads/ or refs/tags/,
+  then prepend that to <dst>.
+
+* Other ambiguity resolutions might be added in the future, but for
+  now any other cases will error out with an error indicating what we
+  tried, and depending on the `advice.pushUnqualifiedRefname`
+  configuration (see linkgit:git-config[1]) suggest what refs/
+  namespace you may have wanted to push to.
+
+--
++
 The object referenced by <src> is used to update the <dst> reference
 on the remote side. Whether this is allowed depends on where in
 `refs/*` the <dst> reference lives as described in detail below, in
@@ -591,6 +611,9 @@ the ones in the examples below) can be configured as the default for
        `refs/remotes/satellite/master`) in the `mothership` repository;
        do the same for `dev` and `satellite/dev`.
 +
+See the section describing `<refspec>...` above for a discussion of
+the matching semantics.
++
 This is to emulate `git fetch` run on the `mothership` using `git
 push` that is run in the opposite direction in order to integrate
 the work done on `satellite`, and is often necessary when you can