pack-objects: equal objects in size should delta against newer objects

diff --git a/Documentation/git-archimport.txt b/Documentation/git-archimport.txt
index fcda0125af92ff9c3d72d711a78d23118787608c..82cb41d2791abbd32bd8209660e9879b9f2b8f32 100644 (file)
--- a/Documentation/git-archimport.txt
+++ b/Documentation/git-archimport.txt
@@ -8,14 +8,15 @@ git-archimport - Import an Arch repository into git
 
 SYNOPSIS
 --------
-`git-archimport` [ -h ] [ -v ] [ -T ] [ -t tempdir ] 
-                 <archive/branch> [ <archive/branch> ]
+[verse]
+'git-archimport' [-h] [-v] [-o] [-a] [-f] [-T] [-D depth] [-t tempdir]
+               <archive/branch>[:<git-branch>] ...
 
 DESCRIPTION
 -----------
 Imports a project from one or more Arch repositories. It will follow branches
 and repositories within the namespaces defined by the <archive/branch>
-parameters suppplied. If it cannot find the remote branch a merge comes from
+parameters supplied. If it cannot find the remote branch a merge comes from
 it will just import it as a regular commit. If it can find it, it will mark it 
 as a merge whenever possible (see discussion below). 
 
@@ -38,6 +39,19 @@ directory. To follow the development of a project that uses Arch, rerun
 `git-archimport` with the same parameters as the initial import to perform 
 incremental imports.
 
+While git-archimport will try to create sensible branch names for the
+archives that it imports, it is also possible to specify git branch names
+manually.  To do so, write a git branch name after each <archive/branch>
+parameter, separated by a colon.  This way, you can shorten the Arch
+branch names and convert Arch jargon to git jargon, for example mapping a
+"PROJECT--devo--VERSION" branch to "master".
+
+Associating multiple Arch branches to one git branch is possible; the
+result will make the most sense only if no commits are made to the first
+branch, after the second branch is created.  Still, this is useful to
+convert Arch repositories that had been rotated periodically.
+
+
 MERGES
 ------
 Patch merge data from Arch is used to mark merges in git as well. git 
@@ -63,6 +77,28 @@ OPTIONS
        Many tags. Will create a tag for every commit, reflecting the commit 
        name in the Arch repository.
 
+-f::
+       Use the fast patchset import strategy.  This can be significantly
+       faster for large trees, but cannot handle directory renames or
+       permissions changes.  The default strategy is slow and safe.
+
+-o::
+       Use this for compatibility with old-style branch names used by
+       earlier versions of git-archimport.  Old-style branch names
+       were category--branch, whereas new-style branch names are
+       archive,category--branch--version.  In both cases, names given
+       on the command-line will override the automatically-generated
+       ones.
+
+-D <depth>::
+       Follow merge ancestry and attempt to import trees that have been
+       merged from.  Specify a depth greater than 1 if patch logs have been
+       pruned.
+
+-a::
+       Attempt to auto-register archives at http://mirrors.sourcecontrol.net
+       This is particularly useful with the -D option.
+
 -t <tmpdir>::
        Override the default tempdir.