t4200: skip gc-rerere test on systems with non GNU date.

diff --git a/Documentation/git-commit-tree.txt b/Documentation/git-commit-tree.txt
index d9b0ab07170160dda74512843bd15e9ef350a5a5..cf25507f8f37194461e939bfa389ca00af05a5b1 100644 (file)
--- a/Documentation/git-commit-tree.txt
+++ b/Documentation/git-commit-tree.txt
@@ -3,15 +3,18 @@ git-commit-tree(1)
 
 NAME
 ----
-git-commit-tree - Creates a new commit object
+git-commit-tree - Create a new commit object
 
 
 SYNOPSIS
 --------
-'git-commit-tree' <tree> [-p <parent commit>]\   < changelog
+'git-commit-tree' <tree> [-p <parent commit>]\* < changelog
 
 DESCRIPTION
 -----------
+This is usually not what an end user wants to run directly.  See
+gitlink:git-commit[1] instead.
+
 Creates a new commit object based on the provided tree object and
 emits the new commit object id on stdout. If no parent is given then
 it is considered to be an initial tree.
@@ -26,8 +29,9 @@ to get there.
 
 Normally a commit would identify a new "HEAD" state, and while git
 doesn't care where you save the note about that state, in practice we
-tend to just write the result to the file `.git/HEAD`, so that we can
-always see what the last committed state was.
+tend to just write the result to the file that is pointed at by
+`.git/HEAD`, so that we can always see what the last committed
+state was.
 
 OPTIONS
 -------
@@ -48,8 +52,8 @@ A commit encapsulates:
 - committer name and email and the commit time.
 
 If not provided, "git-commit-tree" uses your name, hostname and domain to
-provide author and committer info. This can be overridden using the
-following environment variables.
+provide author and committer info. This can be overridden by
+either `.git/config` file, or using the following environment variables.
 
        GIT_AUTHOR_NAME
        GIT_AUTHOR_EMAIL
@@ -59,10 +63,18 @@ following environment variables.
 
 (nb "<", ">" and "\n"s are stripped)
 
+In `.git/config` file, the following items are used for GIT_AUTHOR_NAME and
+GIT_AUTHOR_EMAIL:
+
+       [user]
+               name = "Your Name"
+               email = "your@email.address.xz"
+
 A commit comment is read from stdin (max 999 chars). If a changelog
 entry is not provided via "<" redirection, "git-commit-tree" will just wait
 for one to be entered and terminated with ^D.
 
+
 Diagnostics
 -----------
 You don't exist. Go away!::
@@ -72,6 +84,11 @@ Your parents must have hated you!::
 Your sysadmin must hate you!::
     The password(5) name field is longer than a giant static buffer.
 
+Discussion
+----------
+
+include::i18n.txt[]
+
 See Also
 --------
 gitlink:git-write-tree[1]