setup.c: detect $GIT_COMMON_DIR in is_git_directory()

diff --git a/Documentation/git-commit.txt b/Documentation/git-commit.txt
index 0bbc8f55f9bb558033abb877bf0bc6cd10335edd..1e74b75d383838b3828f3fee20750c399d77cba0 100644 (file)
--- a/Documentation/git-commit.txt
+++ b/Documentation/git-commit.txt
@@ -250,9 +250,10 @@ FROM UPSTREAM REBASE" section in linkgit:git-rebase[1].)
 
 -o::
 --only::
-       Make a commit only from the paths specified on the
+       Make a commit by taking the updated working tree contents
+       of the paths specified on the
        command line, disregarding any contents that have been
-       staged so far. This is the default mode of operation of
+       staged for other paths. This is the default mode of operation of
        'git commit' if any paths are given on the command line,
        in which case this option can be omitted.
        If this option is specified together with '--amend', then