setup_git_env: avoid blind fall-back to ".git"

diff --git a/Documentation/git.txt b/Documentation/git.txt
index b8bec711f47918ad3dc7e05d318525819f3a51ab..2cf7e225f56af05031aa6aebea50e921cde6c9d1 100644 (file)
--- a/Documentation/git.txt
+++ b/Documentation/git.txt
@@ -13,6 +13,7 @@ SYNOPSIS
     [--exec-path[=<path>]] [--html-path] [--man-path] [--info-path]
     [-p|--paginate|--no-pager] [--no-replace-objects] [--bare]
     [--git-dir=<path>] [--work-tree=<path>] [--namespace=<name>]
+    [--super-prefix=<path>]
     <command> [<args>]
 
 DESCRIPTION
@@ -602,6 +603,11 @@ foo.bar= ...`) sets `foo.bar` to the empty string.
        details.  Equivalent to setting the `GIT_NAMESPACE` environment
        variable.
 
+--super-prefix=<path>::
+       Currently for internal use only.  Set a prefix which gives a path from
+       above a repository down to its root.  One use is to give submodules
+       context about the superproject that invoked it.
+
 --bare::
        Treat the repository as a bare repository.  If GIT_DIR
        environment is not set, it is set to the current working