[RFC PATCH 5/5] Remove git-filter-branch, it is now external to git.git

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Signed-off-by: Elijah Newren <newren@xxxxxxxxx>
---
 .gitignore                          |   1 -
 Documentation/git-filter-branch.txt | 461 -------------------
 Makefile                            |   1 -
 command-list.txt                    |   1 -
 git-filter-branch.sh                | 662 ----------------------------
 t/perf/p7000-filter-branch.sh       |  24 -
 t/t7003-filter-branch.sh            | 505 ---------------------
 t/t7009-filter-branch-null-sha1.sh  |  55 ---
 t/t9902-completion.sh               |  12 +-
 9 files changed, 6 insertions(+), 1716 deletions(-)
 delete mode 100644 Documentation/git-filter-branch.txt
 delete mode 100755 git-filter-branch.sh
 delete mode 100755 t/perf/p7000-filter-branch.sh
 delete mode 100755 t/t7003-filter-branch.sh
 delete mode 100755 t/t7009-filter-branch-null-sha1.sh

diff --git a/.gitignore b/.gitignore
index 521d8f4fb4..97f5d8afea 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,7 +63,6 @@
 /git-fast-import
 /git-fetch
 /git-fetch-pack
-/git-filter-branch
 /git-fmt-merge-msg
 /git-for-each-ref
 /git-format-patch
diff --git a/Documentation/git-filter-branch.txt b/Documentation/git-filter-branch.txt
deleted file mode 100644
index 8c586eed55..0000000000
--- a/Documentation/git-filter-branch.txt
+++ /dev/null
@@ -1,461 +0,0 @@
-git-filter-branch(1)
-====================
-
-NAME
-----
-git-filter-branch - Rewrite branches
-
-SYNOPSIS
---------
-[verse]
-'git filter-branch' [--setup <command>] [--subdirectory-filter <directory>]
-	[--env-filter <command>] [--tree-filter <command>]
-	[--index-filter <command>] [--parent-filter <command>]
-	[--msg-filter <command>] [--commit-filter <command>]
-	[--tag-name-filter <command>] [--prune-empty]
-	[--original <namespace>] [-d <directory>] [-f | --force]
-	[--state-branch <branch>] [--] [<rev-list options>...]
-
-WARNING
--------
-'git filter-branch' has a litany of gotchas that can and will cause
-history to be rewritten incorrectly (in addition to abysmal
-performance).  These issues cannot be backward compatibly fixed and as
-such, its use is not recommended.  Please use an alternative history
-filtering tool such as 'git filter-repo'.  If you still need to use
-'git filter-branch', please carefully read the "Safety" section of
-https://public-inbox.org/git/CABPp-BEDOH-row-hxY4u_cP30ptqOpcCvPibwyZ2wBu142qUbA@xxxxxxxxxxxxxx/
-and avoid as many of the pitfalls listed there as reasonably possible.
-
-DESCRIPTION
------------
-Lets you rewrite Git revision history by rewriting the branches mentioned
-in the <rev-list options>, applying custom filters on each revision.
-Those filters can modify each tree (e.g. removing a file or running
-a perl rewrite on all files) or information about each commit.
-Otherwise, all information (including original commit times or merge
-information) will be preserved.
-
-The command will only rewrite the _positive_ refs mentioned in the
-command line (e.g. if you pass 'a..b', only 'b' will be rewritten).
-If you specify no filters, the commits will be recommitted without any
-changes, which would normally have no effect.  Nevertheless, this may be
-useful in the future for compensating for some Git bugs or such,
-therefore such a usage is permitted.
-
-*NOTE*: This command honors `.git/info/grafts` file and refs in
-the `refs/replace/` namespace.
-If you have any grafts or replacement refs defined, running this command
-will make them permanent.
-
-*WARNING*! The rewritten history will have different object names for all
-the objects and will not converge with the original branch.  You will not
-be able to easily push and distribute the rewritten branch on top of the
-original branch.  Please do not use this command if you do not know the
-full implications, and avoid using it anyway, if a simple single commit
-would suffice to fix your problem.  (See the "RECOVERING FROM UPSTREAM
-REBASE" section in linkgit:git-rebase[1] for further information about
-rewriting published history.)
-
-Always verify that the rewritten version is correct: The original refs,
-if different from the rewritten ones, will be stored in the namespace
-'refs/original/'.
-
-Note that since this operation is very I/O expensive, it might
-be a good idea to redirect the temporary directory off-disk with the
-`-d` option, e.g. on tmpfs.  Reportedly the speedup is very noticeable.
-
-
-Filters
-~~~~~~~
-
-The filters are applied in the order as listed below.  The <command>
-argument is always evaluated in the shell context using the 'eval' command
-(with the notable exception of the commit filter, for technical reasons).
-Prior to that, the `$GIT_COMMIT` environment variable will be set to contain
-the id of the commit being rewritten.  Also, GIT_AUTHOR_NAME,
-GIT_AUTHOR_EMAIL, GIT_AUTHOR_DATE, GIT_COMMITTER_NAME, GIT_COMMITTER_EMAIL,
-and GIT_COMMITTER_DATE are taken from the current commit and exported to
-the environment, in order to affect the author and committer identities of
-the replacement commit created by linkgit:git-commit-tree[1] after the
-filters have run.
-
-If any evaluation of <command> returns a non-zero exit status, the whole
-operation will be aborted.
-
-A 'map' function is available that takes an "original sha1 id" argument
-and outputs a "rewritten sha1 id" if the commit has been already
-rewritten, and "original sha1 id" otherwise; the 'map' function can
-return several ids on separate lines if your commit filter emitted
-multiple commits.
-
-
-OPTIONS
--------
-
---setup <command>::
-	This is not a real filter executed for each commit but a one
-	time setup just before the loop. Therefore no commit-specific
-	variables are defined yet.  Functions or variables defined here
-	can be used or modified in the following filter steps except
-	the commit filter, for technical reasons.
-
---subdirectory-filter <directory>::
-	Only look at the history which touches the given subdirectory.
-	The result will contain that directory (and only that) as its
-	project root. Implies <<Remap_to_ancestor>>.
-
---env-filter <command>::
-	This filter may be used if you only need to modify the environment
-	in which the commit will be performed.  Specifically, you might
-	want to rewrite the author/committer name/email/time environment
-	variables (see linkgit:git-commit-tree[1] for details).
-
---tree-filter <command>::
-	This is the filter for rewriting the tree and its contents.
-	The argument is evaluated in shell with the working
-	directory set to the root of the checked out tree.  The new tree
-	is then used as-is (new files are auto-added, disappeared files
-	are auto-removed - neither .gitignore files nor any other ignore
-	rules *HAVE ANY EFFECT*!).
-
---index-filter <command>::
-	This is the filter for rewriting the index.  It is similar to the
-	tree filter but does not check out the tree, which makes it much
-	faster.  Frequently used with `git rm --cached
-	--ignore-unmatch ...`, see EXAMPLES below.  For hairy
-	cases, see linkgit:git-update-index[1].
-
---parent-filter <command>::
-	This is the filter for rewriting the commit's parent list.
-	It will receive the parent string on stdin and shall output
-	the new parent string on stdout.  The parent string is in
-	the format described in linkgit:git-commit-tree[1]: empty for
-	the initial commit, "-p parent" for a normal commit and
-	"-p parent1 -p parent2 -p parent3 ..." for a merge commit.
-
---msg-filter <command>::
-	This is the filter for rewriting the commit messages.
-	The argument is evaluated in the shell with the original
-	commit message on standard input; its standard output is
-	used as the new commit message.
-
---commit-filter <command>::
-	This is the filter for performing the commit.
-	If this filter is specified, it will be called instead of the
-	'git commit-tree' command, with arguments of the form
-	"<TREE_ID> [(-p <PARENT_COMMIT_ID>)...]" and the log message on
-	stdin.  The commit id is expected on stdout.
-+
-As a special extension, the commit filter may emit multiple
-commit ids; in that case, the rewritten children of the original commit will
-have all of them as parents.
-+
-You can use the 'map' convenience function in this filter, and other
-convenience functions, too.  For example, calling 'skip_commit "$@"'
-will leave out the current commit (but not its changes! If you want
-that, use 'git rebase' instead).
-+
-You can also use the `git_commit_non_empty_tree "$@"` instead of
-`git commit-tree "$@"` if you don't wish to keep commits with a single parent
-and that makes no change to the tree.
-
---tag-name-filter <command>::
-	This is the filter for rewriting tag names. When passed,
-	it will be called for every tag ref that points to a rewritten
-	object (or to a tag object which points to a rewritten object).
-	The original tag name is passed via standard input, and the new
-	tag name is expected on standard output.
-+
-The original tags are not deleted, but can be overwritten;
-use "--tag-name-filter cat" to simply update the tags.  In this
-case, be very careful and make sure you have the old tags
-backed up in case the conversion has run afoul.
-+
-Nearly proper rewriting of tag objects is supported. If the tag has
-a message attached, a new tag object will be created with the same message,
-author, and timestamp. If the tag has a signature attached, the
-signature will be stripped. It is by definition impossible to preserve
-signatures. The reason this is "nearly" proper, is because ideally if
-the tag did not change (points to the same object, has the same name, etc.)
-it should retain any signature. That is not the case, signatures will always
-be removed, buyer beware. There is also no support for changing the
-author or timestamp (or the tag message for that matter). Tags which point
-to other tags will be rewritten to point to the underlying commit.
-
---prune-empty::
-	Some filters will generate empty commits that leave the tree untouched.
-	This option instructs git-filter-branch to remove such commits if they
-	have exactly one or zero non-pruned parents; merge commits will
-	therefore remain intact.  This option cannot be used together with
-	`--commit-filter`, though the same effect can be achieved by using the
-	provided `git_commit_non_empty_tree` function in a commit filter.
-
---original <namespace>::
-	Use this option to set the namespace where the original commits
-	will be stored. The default value is 'refs/original'.
-
--d <directory>::
-	Use this option to set the path to the temporary directory used for
-	rewriting.  When applying a tree filter, the command needs to
-	temporarily check out the tree to some directory, which may consume
-	considerable space in case of large projects.  By default it
-	does this in the `.git-rewrite/` directory but you can override
-	that choice by this parameter.
-
--f::
---force::
-	'git filter-branch' refuses to start with an existing temporary
-	directory or when there are already refs starting with
-	'refs/original/', unless forced.
-
---state-branch <branch>::
-	This option will cause the mapping from old to new objects to
-	be loaded from named branch upon startup and saved as a new
-	commit to that branch upon exit, enabling incremental of large
-	trees. If '<branch>' does not exist it will be created.
-
-<rev-list options>...::
-	Arguments for 'git rev-list'.  All positive refs included by
-	these options are rewritten.  You may also specify options
-	such as `--all`, but you must use `--` to separate them from
-	the 'git filter-branch' options. Implies <<Remap_to_ancestor>>.
-
-
-[[Remap_to_ancestor]]
-Remap to ancestor
-~~~~~~~~~~~~~~~~~
-
-By using linkgit:git-rev-list[1] arguments, e.g., path limiters, you can limit the
-set of revisions which get rewritten. However, positive refs on the command
-line are distinguished: we don't let them be excluded by such limiters. For
-this purpose, they are instead rewritten to point at the nearest ancestor that
-was not excluded.
-
-
-EXIT STATUS
------------
-
-On success, the exit status is `0`.  If the filter can't find any commits to
-rewrite, the exit status is `2`.  On any other error, the exit status may be
-any other non-zero value.
-
-
-EXAMPLES
---------
-
-Suppose you want to remove a file (containing confidential information
-or copyright violation) from all commits:
-
--------------------------------------------------------
-git filter-branch --tree-filter 'rm filename' HEAD
--------------------------------------------------------
-
-However, if the file is absent from the tree of some commit,
-a simple `rm filename` will fail for that tree and commit.
-Thus you may instead want to use `rm -f filename` as the script.
-
-Using `--index-filter` with 'git rm' yields a significantly faster
-version.  Like with using `rm filename`, `git rm --cached filename`
-will fail if the file is absent from the tree of a commit.  If you
-want to "completely forget" a file, it does not matter when it entered
-history, so we also add `--ignore-unmatch`:
-
---------------------------------------------------------------------------
-git filter-branch --index-filter 'git rm --cached --ignore-unmatch filename' HEAD
---------------------------------------------------------------------------
-
-Now, you will get the rewritten history saved in HEAD.
-
-To rewrite the repository to look as if `foodir/` had been its project
-root, and discard all other history:
-
--------------------------------------------------------
-git filter-branch --subdirectory-filter foodir -- --all
--------------------------------------------------------
-
-Thus you can, e.g., turn a library subdirectory into a repository of
-its own.  Note the `--` that separates 'filter-branch' options from
-revision options, and the `--all` to rewrite all branches and tags.
-
-To set a commit (which typically is at the tip of another
-history) to be the parent of the current initial commit, in
-order to paste the other history behind the current history:
-
--------------------------------------------------------------------
-git filter-branch --parent-filter 'sed "s/^\$/-p <graft-id>/"' HEAD
--------------------------------------------------------------------
-
-(if the parent string is empty - which happens when we are dealing with
-the initial commit - add graftcommit as a parent).  Note that this assumes
-history with a single root (that is, no merge without common ancestors
-happened).  If this is not the case, use:
-
---------------------------------------------------------------------------
-git filter-branch --parent-filter \
-	'test $GIT_COMMIT = <commit-id> && echo "-p <graft-id>" || cat' HEAD
---------------------------------------------------------------------------
-
-or even simpler:
-
------------------------------------------------
-git replace --graft $commit-id $graft-id
-git filter-branch $graft-id..HEAD
------------------------------------------------
-
-To remove commits authored by "Darl McBribe" from the history:
-
-------------------------------------------------------------------------------
-git filter-branch --commit-filter '
-	if [ "$GIT_AUTHOR_NAME" = "Darl McBribe" ];
-	then
-		skip_commit "$@";
-	else
-		git commit-tree "$@";
-	fi' HEAD
-------------------------------------------------------------------------------
-
-The function 'skip_commit' is defined as follows:
-
---------------------------
-skip_commit()
-{
-	shift;
-	while [ -n "$1" ];
-	do
-		shift;
-		map "$1";
-		shift;
-	done;
-}
---------------------------
-
-The shift magic first throws away the tree id and then the -p
-parameters.  Note that this handles merges properly! In case Darl
-committed a merge between P1 and P2, it will be propagated properly
-and all children of the merge will become merge commits with P1,P2
-as their parents instead of the merge commit.
-
-*NOTE* the changes introduced by the commits, and which are not reverted
-by subsequent commits, will still be in the rewritten branch. If you want
-to throw out _changes_ together with the commits, you should use the
-interactive mode of 'git rebase'.
-
-You can rewrite the commit log messages using `--msg-filter`.  For
-example, 'git svn-id' strings in a repository created by 'git svn' can
-be removed this way:
-
--------------------------------------------------------
-git filter-branch --msg-filter '
-	sed -e "/^git-svn-id:/d"
-'
--------------------------------------------------------
-
-If you need to add 'Acked-by' lines to, say, the last 10 commits (none
-of which is a merge), use this command:
-
---------------------------------------------------------
-git filter-branch --msg-filter '
-	cat &&
-	echo "Acked-by: Bugs Bunny <bunny@xxxxxxxxxxxx>"
-' HEAD~10..HEAD
---------------------------------------------------------
-
-The `--env-filter` option can be used to modify committer and/or author
-identity.  For example, if you found out that your commits have the wrong
-identity due to a misconfigured user.email, you can make a correction,
-before publishing the project, like this:
-
---------------------------------------------------------
-git filter-branch --env-filter '
-	if test "$GIT_AUTHOR_EMAIL" = "root@localhost"
-	then
-		GIT_AUTHOR_EMAIL=john@xxxxxxxxxxx
-	fi
-	if test "$GIT_COMMITTER_EMAIL" = "root@localhost"
-	then
-		GIT_COMMITTER_EMAIL=john@xxxxxxxxxxx
-	fi
-' -- --all
---------------------------------------------------------
-
-To restrict rewriting to only part of the history, specify a revision
-range in addition to the new branch name.  The new branch name will
-point to the top-most revision that a 'git rev-list' of this range
-will print.
-
-Consider this history:
-
-------------------
-     D--E--F--G--H
-    /     /
-A--B-----C
-------------------
-
-To rewrite only commits D,E,F,G,H, but leave A, B and C alone, use:
-
---------------------------------
-git filter-branch ... C..H
---------------------------------
-
-To rewrite commits E,F,G,H, use one of these:
-
-----------------------------------------
-git filter-branch ... C..H --not D
-git filter-branch ... D..H --not C
-----------------------------------------
-
-To move the whole tree into a subdirectory, or remove it from there:
-
----------------------------------------------------------------
-git filter-branch --index-filter \
-	'git ls-files -s | sed "s-\t\"*-&newsubdir/-" |
-		GIT_INDEX_FILE=$GIT_INDEX_FILE.new \
-			git update-index --index-info &&
-	 mv "$GIT_INDEX_FILE.new" "$GIT_INDEX_FILE"' HEAD
----------------------------------------------------------------
-
-
-
-CHECKLIST FOR SHRINKING A REPOSITORY
-------------------------------------
-
-git-filter-branch can be used to get rid of a subset of files,
-usually with some combination of `--index-filter` and
-`--subdirectory-filter`.  People expect the resulting repository to
-be smaller than the original, but you need a few more steps to
-actually make it smaller, because Git tries hard not to lose your
-objects until you tell it to.  First make sure that:
-
-* You really removed all variants of a filename, if a blob was moved
-  over its lifetime.  `git log --name-only --follow --all -- filename`
-  can help you find renames.
-
-* You really filtered all refs: use `--tag-name-filter cat -- --all`
-  when calling git-filter-branch.
-
-Then there are two ways to get a smaller repository.  A safer way is
-to clone, that keeps your original intact.
-
-* Clone it with `git clone file:///path/to/repo`.  The clone
-  will not have the removed objects.  See linkgit:git-clone[1].  (Note
-  that cloning with a plain path just hardlinks everything!)
-
-If you really don't want to clone it, for whatever reasons, check the
-following points instead (in this order).  This is a very destructive
-approach, so *make a backup* or go back to cloning it.  You have been
-warned.
-
-* Remove the original refs backed up by git-filter-branch: say `git
-  for-each-ref --format="%(refname)" refs/original/ | xargs -n 1 git
-  update-ref -d`.
-
-* Expire all reflogs with `git reflog expire --expire=now --all`.
-
-* Garbage collect all unreferenced objects with `git gc --prune=now`
-  (or if your git-gc is not new enough to support arguments to
-  `--prune`, use `git repack -ad; git prune` instead).
-
-GIT
----
-Part of the linkgit:git[1] suite
diff --git a/Makefile b/Makefile
index f9255344ae..20850def5d 100644
--- a/Makefile
+++ b/Makefile
@@ -607,7 +607,6 @@ unexport CDPATH
 
 SCRIPT_SH += git-bisect.sh
 SCRIPT_SH += git-difftool--helper.sh
-SCRIPT_SH += git-filter-branch.sh
 SCRIPT_SH += git-merge-octopus.sh
 SCRIPT_SH += git-merge-one-file.sh
 SCRIPT_SH += git-merge-resolve.sh
diff --git a/command-list.txt b/command-list.txt
index a9ac72bef4..1ba65d9516 100644
--- a/command-list.txt
+++ b/command-list.txt
@@ -90,7 +90,6 @@ git-fast-export                         ancillarymanipulators
 git-fast-import                         ancillarymanipulators
 git-fetch                               mainporcelain           remote
 git-fetch-pack                          synchingrepositories
-git-filter-branch                       ancillarymanipulators
 git-fmt-merge-msg                       purehelpers
 git-for-each-ref                        plumbinginterrogators
 git-format-patch                        mainporcelain
diff --git a/git-filter-branch.sh b/git-filter-branch.sh
deleted file mode 100755
index 5c5afa2b98..0000000000
--- a/git-filter-branch.sh
+++ /dev/null
@@ -1,662 +0,0 @@
-#!/bin/sh
-#
-# Rewrite revision history
-# Copyright (c) Petr Baudis, 2006
-# Minimal changes to "port" it to core-git (c) Johannes Schindelin, 2007
-#
-# Lets you rewrite the revision history of the current branch, creating
-# a new branch. You can specify a number of filters to modify the commits,
-# files and trees.
-
-# The following functions will also be available in the commit filter:
-
-functions=$(cat << \EOF
-EMPTY_TREE=$(git hash-object -t tree /dev/null)
-
-warn () {
-	echo "$*" >&2
-}
-
-map()
-{
-	# if it was not rewritten, take the original
-	if test -r "$workdir/../map/$1"
-	then
-		cat "$workdir/../map/$1"
-	else
-		echo "$1"
-	fi
-}
-
-# if you run 'skip_commit "$@"' in a commit filter, it will print
-# the (mapped) parents, effectively skipping the commit.
-
-skip_commit()
-{
-	shift;
-	while [ -n "$1" ];
-	do
-		shift;
-		map "$1";
-		shift;
-	done;
-}
-
-# if you run 'git_commit_non_empty_tree "$@"' in a commit filter,
-# it will skip commits that leave the tree untouched, commit the other.
-git_commit_non_empty_tree()
-{
-	if test $# = 3 && test "$1" = $(git rev-parse "$3^{tree}"); then
-		map "$3"
-	elif test $# = 1 && test "$1" = $EMPTY_TREE; then
-		:
-	else
-		git commit-tree "$@"
-	fi
-}
-# override die(): this version puts in an extra line break, so that
-# the progress is still visible
-
-die()
-{
-	echo >&2
-	echo "$*" >&2
-	exit 1
-}
-EOF
-)
-
-eval "$functions"
-
-finish_ident() {
-	# Ensure non-empty id name.
-	echo "case \"\$GIT_$1_NAME\" in \"\") GIT_$1_NAME=\"\${GIT_$1_EMAIL%%@*}\" && export GIT_$1_NAME;; esac"
-	# And make sure everything is exported.
-	echo "export GIT_$1_NAME"
-	echo "export GIT_$1_EMAIL"
-	echo "export GIT_$1_DATE"
-}
-
-set_ident () {
-	parse_ident_from_commit author AUTHOR committer COMMITTER
-	finish_ident AUTHOR
-	finish_ident COMMITTER
-}
-
-USAGE="[--setup <command>] [--subdirectory-filter <directory>] [--env-filter <command>]
-	[--tree-filter <command>] [--index-filter <command>]
-	[--parent-filter <command>] [--msg-filter <command>]
-	[--commit-filter <command>] [--tag-name-filter <command>]
-	[--original <namespace>]
-	[-d <directory>] [-f | --force] [--state-branch <branch>]
-	[--] [<rev-list options>...]"
-
-OPTIONS_SPEC=
-. git-sh-setup
-
-if [ "$(is_bare_repository)" = false ]; then
-	require_clean_work_tree 'rewrite branches'
-fi
-
-tempdir=.git-rewrite
-filter_setup=
-filter_env=
-filter_tree=
-filter_index=
-filter_parent=
-filter_msg=cat
-filter_commit=
-filter_tag_name=
-filter_subdir=
-state_branch=
-orig_namespace=refs/original/
-force=
-prune_empty=
-remap_to_ancestor=
-while :
-do
-	case "$1" in
-	--)
-		shift
-		break
-		;;
-	--force|-f)
-		shift
-		force=t
-		continue
-		;;
-	--remap-to-ancestor)
-		# deprecated ($remap_to_ancestor is set now automatically)
-		shift
-		remap_to_ancestor=t
-		continue
-		;;
-	--prune-empty)
-		shift
-		prune_empty=t
-		continue
-		;;
-	-*)
-		;;
-	*)
-		break;
-	esac
-
-	# all switches take one argument
-	ARG="$1"
-	case "$#" in 1) usage ;; esac
-	shift
-	OPTARG="$1"
-	shift
-
-	case "$ARG" in
-	-d)
-		tempdir="$OPTARG"
-		;;
-	--setup)
-		filter_setup="$OPTARG"
-		;;
-	--subdirectory-filter)
-		filter_subdir="$OPTARG"
-		remap_to_ancestor=t
-		;;
-	--env-filter)
-		filter_env="$OPTARG"
-		;;
-	--tree-filter)
-		filter_tree="$OPTARG"
-		;;
-	--index-filter)
-		filter_index="$OPTARG"
-		;;
-	--parent-filter)
-		filter_parent="$OPTARG"
-		;;
-	--msg-filter)
-		filter_msg="$OPTARG"
-		;;
-	--commit-filter)
-		filter_commit="$functions; $OPTARG"
-		;;
-	--tag-name-filter)
-		filter_tag_name="$OPTARG"
-		;;
-	--original)
-		orig_namespace=$(expr "$OPTARG/" : '\(.*[^/]\)/*$')/
-		;;
-	--state-branch)
-		state_branch="$OPTARG"
-		;;
-	*)
-		usage
-		;;
-	esac
-done
-
-case "$prune_empty,$filter_commit" in
-,)
-	filter_commit='git commit-tree "$@"';;
-t,)
-	filter_commit="$functions;"' git_commit_non_empty_tree "$@"';;
-,*)
-	;;
-*)
-	die "Cannot set --prune-empty and --commit-filter at the same time"
-esac
-
-case "$force" in
-t)
-	rm -rf "$tempdir"
-;;
-'')
-	test -d "$tempdir" &&
-		die "$tempdir already exists, please remove it"
-esac
-orig_dir=$(pwd)
-mkdir -p "$tempdir/t" &&
-tempdir="$(cd "$tempdir"; pwd)" &&
-cd "$tempdir/t" &&
-workdir="$(pwd)" ||
-die ""
-
-# Remove tempdir on exit
-trap 'cd "$orig_dir"; rm -rf "$tempdir"' 0
-
-ORIG_GIT_DIR="$GIT_DIR"
-ORIG_GIT_WORK_TREE="$GIT_WORK_TREE"
-ORIG_GIT_INDEX_FILE="$GIT_INDEX_FILE"
-ORIG_GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME"
-ORIG_GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL"
-ORIG_GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE"
-ORIG_GIT_COMMITTER_NAME="$GIT_COMMITTER_NAME"
-ORIG_GIT_COMMITTER_EMAIL="$GIT_COMMITTER_EMAIL"
-ORIG_GIT_COMMITTER_DATE="$GIT_COMMITTER_DATE"
-
-GIT_WORK_TREE=.
-export GIT_DIR GIT_WORK_TREE
-
-# Make sure refs/original is empty
-git for-each-ref > "$tempdir"/backup-refs || exit
-while read sha1 type name
-do
-	case "$force,$name" in
-	,$orig_namespace*)
-		die "Cannot create a new backup.
-A previous backup already exists in $orig_namespace
-Force overwriting the backup with -f"
-	;;
-	t,$orig_namespace*)
-		git update-ref -d "$name" $sha1
-	;;
-	esac
-done < "$tempdir"/backup-refs
-
-# The refs should be updated if their heads were rewritten
-git rev-parse --no-flags --revs-only --symbolic-full-name \
-	--default HEAD "$@" > "$tempdir"/raw-refs || exit
-while read ref
-do
-	case "$ref" in ^?*) continue ;; esac
-
-	if git rev-parse --verify "$ref"^0 >/dev/null 2>&1
-	then
-		echo "$ref"
-	else
-		warn "WARNING: not rewriting '$ref' (not a committish)"
-	fi
-done >"$tempdir"/heads <"$tempdir"/raw-refs
-
-test -s "$tempdir"/heads ||
-	die "You must specify a ref to rewrite."
-
-GIT_INDEX_FILE="$(pwd)/../index"
-export GIT_INDEX_FILE
-
-# map old->new commit ids for rewriting parents
-mkdir ../map || die "Could not create map/ directory"
-
-if test -n "$state_branch"
-then
-	state_commit=$(git rev-parse --no-flags --revs-only "$state_branch")
-	if test -n "$state_commit"
-	then
-		echo "Populating map from $state_branch ($state_commit)" 1>&2
-		perl -e'open(MAP, "-|", "git show $ARGV[0]:filter.map") or die;
-			while (<MAP>) {
-				m/(.*):(.*)/ or die;
-				open F, ">../map/$1" or die;
-				print F "$2" or die;
-				close(F) or die;
-			}
-			close(MAP) or die;' "$state_commit" \
-				|| die "Unable to load state from $state_branch:filter.map"
-	else
-		echo "Branch $state_branch does not exist. Will create" 1>&2
-	fi
-fi
-
-# we need "--" only if there are no path arguments in $@
-nonrevs=$(git rev-parse --no-revs "$@") || exit
-if test -z "$nonrevs"
-then
-	dashdash=--
-else
-	dashdash=
-	remap_to_ancestor=t
-fi
-
-git rev-parse --revs-only "$@" >../parse
-
-case "$filter_subdir" in
-"")
-	eval set -- "$(git rev-parse --sq --no-revs "$@")"
-	;;
-*)
-	eval set -- "$(git rev-parse --sq --no-revs "$@" $dashdash \
-		"$filter_subdir")"
-	;;
-esac
-
-git rev-list --reverse --topo-order --default HEAD \
-	--parents --simplify-merges --stdin "$@" <../parse >../revs ||
-	die "Could not get the commits"
-commits=$(wc -l <../revs | tr -d " ")
-
-test $commits -eq 0 && die_with_status 2 "Found nothing to rewrite"
-
-# Rewrite the commits
-report_progress ()
-{
-	if test -n "$progress" &&
-		test $git_filter_branch__commit_count -gt $next_sample_at
-	then
-		count=$git_filter_branch__commit_count
-
-		now=$(date +%s)
-		elapsed=$(($now - $start_timestamp))
-		remaining=$(( ($commits - $count) * $elapsed / $count ))
-		if test $elapsed -gt 0
-		then
-			next_sample_at=$(( ($elapsed + 1) * $count / $elapsed ))
-		else
-			next_sample_at=$(($next_sample_at + 1))
-		fi
-		progress=" ($elapsed seconds passed, remaining $remaining predicted)"
-	fi
-	printf "\rRewrite $commit ($count/$commits)$progress    "
-}
-
-git_filter_branch__commit_count=0
-
-progress= start_timestamp=
-if date '+%s' 2>/dev/null | grep -q '^[0-9][0-9]*$'
-then
-	next_sample_at=0
-	progress="dummy to ensure this is not empty"
-	start_timestamp=$(date '+%s')
-fi
-
-if test -n "$filter_index" ||
-   test -n "$filter_tree" ||
-   test -n "$filter_subdir"
-then
-	need_index=t
-else
-	need_index=
-fi
-
-eval "$filter_setup" < /dev/null ||
-	die "filter setup failed: $filter_setup"
-
-while read commit parents; do
-	git_filter_branch__commit_count=$(($git_filter_branch__commit_count+1))
-
-	report_progress
-	test -f "$workdir"/../map/$commit && continue
-
-	case "$filter_subdir" in
-	"")
-		if test -n "$need_index"
-		then
-			GIT_ALLOW_NULL_SHA1=1 git read-tree -i -m $commit
-		fi
-		;;
-	*)
-		# The commit may not have the subdirectory at all
-		err=$(GIT_ALLOW_NULL_SHA1=1 \
-		      git read-tree -i -m $commit:"$filter_subdir" 2>&1) || {
-			if ! git rev-parse -q --verify $commit:"$filter_subdir"
-			then
-				rm -f "$GIT_INDEX_FILE"
-			else
-				echo >&2 "$err"
-				false
-			fi
-		}
-	esac || die "Could not initialize the index"
-
-	GIT_COMMIT=$commit
-	export GIT_COMMIT
-	git cat-file commit "$commit" >../commit ||
-		die "Cannot read commit $commit"
-
-	eval "$(set_ident <../commit)" ||
-		die "setting author/committer failed for commit $commit"
-	eval "$filter_env" < /dev/null ||
-		die "env filter failed: $filter_env"
-
-	if [ "$filter_tree" ]; then
-		git checkout-index -f -u -a ||
-			die "Could not checkout the index"
-		# files that $commit removed are now still in the working tree;
-		# remove them, else they would be added again
-		git clean -d -q -f -x
-		eval "$filter_tree" < /dev/null ||
-			die "tree filter failed: $filter_tree"
-
-		(
-			git diff-index -r --name-only --ignore-submodules $commit -- &&
-			git ls-files --others
-		) > "$tempdir"/tree-state || exit
-		git update-index --add --replace --remove --stdin \
-			< "$tempdir"/tree-state || exit
-	fi
-
-	eval "$filter_index" < /dev/null ||
-		die "index filter failed: $filter_index"
-
-	parentstr=
-	for parent in $parents; do
-		for reparent in $(map "$parent"); do
-			case "$parentstr " in
-			*" -p $reparent "*)
-				;;
-			*)
-				parentstr="$parentstr -p $reparent"
-				;;
-			esac
-		done
-	done
-	if [ "$filter_parent" ]; then
-		parentstr="$(echo "$parentstr" | eval "$filter_parent")" ||
-				die "parent filter failed: $filter_parent"
-	fi
-
-	{
-		while IFS='' read -r header_line && test -n "$header_line"
-		do
-			# skip header lines...
-			:;
-		done
-		# and output the actual commit message
-		cat
-	} <../commit |
-		eval "$filter_msg" > ../message ||
-			die "msg filter failed: $filter_msg"
-
-	if test -n "$need_index"
-	then
-		tree=$(git write-tree)
-	else
-		tree=$(git rev-parse "$commit^{tree}")
-	fi
-	workdir=$workdir @SHELL_PATH@ -c "$filter_commit" "git commit-tree" \
-		"$tree" $parentstr < ../message > ../map/$commit ||
-			die "could not write rewritten commit"
-done <../revs
-
-# If we are filtering for paths, as in the case of a subdirectory
-# filter, it is possible that a specified head is not in the set of
-# rewritten commits, because it was pruned by the revision walker.
-# Ancestor remapping fixes this by mapping these heads to the unique
-# nearest ancestor that survived the pruning.
-
-if test "$remap_to_ancestor" = t
-then
-	while read ref
-	do
-		sha1=$(git rev-parse "$ref"^0)
-		test -f "$workdir"/../map/$sha1 && continue
-		ancestor=$(git rev-list --simplify-merges -1 "$ref" "$@")
-		test "$ancestor" && echo $(map $ancestor) >> "$workdir"/../map/$sha1
-	done < "$tempdir"/heads
-fi
-
-# Finally update the refs
-
-_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
-_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
-echo
-while read ref
-do
-	# avoid rewriting a ref twice
-	test -f "$orig_namespace$ref" && continue
-
-	sha1=$(git rev-parse "$ref"^0)
-	rewritten=$(map $sha1)
-
-	test $sha1 = "$rewritten" &&
-		warn "WARNING: Ref '$ref' is unchanged" &&
-		continue
-
-	case "$rewritten" in
-	'')
-		echo "Ref '$ref' was deleted"
-		git update-ref -m "filter-branch: delete" -d "$ref" $sha1 ||
-			die "Could not delete $ref"
-	;;
-	$_x40)
-		echo "Ref '$ref' was rewritten"
-		if ! git update-ref -m "filter-branch: rewrite" \
-					"$ref" $rewritten $sha1 2>/dev/null; then
-			if test $(git cat-file -t "$ref") = tag; then
-				if test -z "$filter_tag_name"; then
-					warn "WARNING: You said to rewrite tagged commits, but not the corresponding tag."
-					warn "WARNING: Perhaps use '--tag-name-filter cat' to rewrite the tag."
-				fi
-			else
-				die "Could not rewrite $ref"
-			fi
-		fi
-	;;
-	*)
-		# NEEDSWORK: possibly add -Werror, making this an error
-		warn "WARNING: '$ref' was rewritten into multiple commits:"
-		warn "$rewritten"
-		warn "WARNING: Ref '$ref' points to the first one now."
-		rewritten=$(echo "$rewritten" | head -n 1)
-		git update-ref -m "filter-branch: rewrite to first" \
-				"$ref" $rewritten $sha1 ||
-			die "Could not rewrite $ref"
-	;;
-	esac
-	git update-ref -m "filter-branch: backup" "$orig_namespace$ref" $sha1 ||
-		 exit
-done < "$tempdir"/heads
-
-# TODO: This should possibly go, with the semantics that all positive given
-#       refs are updated, and their original heads stored in refs/original/
-# Filter tags
-
-if [ "$filter_tag_name" ]; then
-	git for-each-ref --format='%(objectname) %(objecttype) %(refname)' refs/tags |
-	while read sha1 type ref; do
-		ref="${ref#refs/tags/}"
-		# XXX: Rewrite tagged trees as well?
-		if [ "$type" != "commit" -a "$type" != "tag" ]; then
-			continue;
-		fi
-
-		if [ "$type" = "tag" ]; then
-			# Dereference to a commit
-			sha1t="$sha1"
-			sha1="$(git rev-parse -q "$sha1"^{commit})" || continue
-		fi
-
-		[ -f "../map/$sha1" ] || continue
-		new_sha1="$(cat "../map/$sha1")"
-		GIT_COMMIT="$sha1"
-		export GIT_COMMIT
-		new_ref="$(echo "$ref" | eval "$filter_tag_name")" ||
-			die "tag name filter failed: $filter_tag_name"
-
-		echo "$ref -> $new_ref ($sha1 -> $new_sha1)"
-
-		if [ "$type" = "tag" ]; then
-			new_sha1=$( ( printf 'object %s\ntype commit\ntag %s\n' \
-						"$new_sha1" "$new_ref"
-				git cat-file tag "$ref" |
-				sed -n \
-				    -e '1,/^$/{
-					  /^object /d
-					  /^type /d
-					  /^tag /d
-					}' \
-				    -e '/^-----BEGIN PGP SIGNATURE-----/q' \
-				    -e 'p' ) |
-				git hash-object -t tag -w --stdin) ||
-				die "Could not create new tag object for $ref"
-			if git cat-file tag "$ref" | \
-			   sane_grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1
-			then
-				warn "gpg signature stripped from tag object $sha1t"
-			fi
-		fi
-
-		git update-ref "refs/tags/$new_ref" "$new_sha1" ||
-			die "Could not write tag $new_ref"
-	done
-fi
-
-unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE
-unset GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
-unset GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL GIT_COMMITTER_DATE
-test -z "$ORIG_GIT_DIR" || {
-	GIT_DIR="$ORIG_GIT_DIR" && export GIT_DIR
-}
-test -z "$ORIG_GIT_WORK_TREE" || {
-	GIT_WORK_TREE="$ORIG_GIT_WORK_TREE" &&
-	export GIT_WORK_TREE
-}
-test -z "$ORIG_GIT_INDEX_FILE" || {
-	GIT_INDEX_FILE="$ORIG_GIT_INDEX_FILE" &&
-	export GIT_INDEX_FILE
-}
-test -z "$ORIG_GIT_AUTHOR_NAME" || {
-	GIT_AUTHOR_NAME="$ORIG_GIT_AUTHOR_NAME" &&
-	export GIT_AUTHOR_NAME
-}
-test -z "$ORIG_GIT_AUTHOR_EMAIL" || {
-	GIT_AUTHOR_EMAIL="$ORIG_GIT_AUTHOR_EMAIL" &&
-	export GIT_AUTHOR_EMAIL
-}
-test -z "$ORIG_GIT_AUTHOR_DATE" || {
-	GIT_AUTHOR_DATE="$ORIG_GIT_AUTHOR_DATE" &&
-	export GIT_AUTHOR_DATE
-}
-test -z "$ORIG_GIT_COMMITTER_NAME" || {
-	GIT_COMMITTER_NAME="$ORIG_GIT_COMMITTER_NAME" &&
-	export GIT_COMMITTER_NAME
-}
-test -z "$ORIG_GIT_COMMITTER_EMAIL" || {
-	GIT_COMMITTER_EMAIL="$ORIG_GIT_COMMITTER_EMAIL" &&
-	export GIT_COMMITTER_EMAIL
-}
-test -z "$ORIG_GIT_COMMITTER_DATE" || {
-	GIT_COMMITTER_DATE="$ORIG_GIT_COMMITTER_DATE" &&
-	export GIT_COMMITTER_DATE
-}
-
-if test -n "$state_branch"
-then
-	echo "Saving rewrite state to $state_branch" 1>&2
-	state_blob=$(
-		perl -e'opendir D, "../map" or die;
-			open H, "|-", "git hash-object -w --stdin" or die;
-			foreach (sort readdir(D)) {
-				next if m/^\.\.?$/;
-				open F, "<../map/$_" or die;
-				chomp($f = <F>);
-				print H "$_:$f\n" or die;
-			}
-			close(H) or die;' || die "Unable to save state")
-	state_tree=$(printf '100644 blob %s\tfilter.map\n' "$state_blob" | git mktree)
-	if test -n "$state_commit"
-	then
-		state_commit=$(echo "Sync" | git commit-tree "$state_tree" -p "$state_commit")
-	else
-		state_commit=$(echo "Sync" | git commit-tree "$state_tree" )
-	fi
-	git update-ref "$state_branch" "$state_commit"
-fi
-
-cd "$orig_dir"
-rm -rf "$tempdir"
-
-trap - 0
-
-if [ "$(is_bare_repository)" = false ]; then
-	git read-tree -u -m HEAD || exit
-fi
-
-exit 0
diff --git a/t/perf/p7000-filter-branch.sh b/t/perf/p7000-filter-branch.sh
deleted file mode 100755
index b029586ccb..0000000000
--- a/t/perf/p7000-filter-branch.sh
+++ /dev/null
@@ -1,24 +0,0 @@
-#!/bin/sh
-
-test_description='performance of filter-branch'
-. ./perf-lib.sh
-
-test_perf_default_repo
-test_checkout_worktree
-
-test_expect_success 'mark bases for tests' '
-	git tag -f tip &&
-	git tag -f base HEAD~100
-'
-
-test_perf 'noop filter' '
-	git checkout --detach tip &&
-	git filter-branch -f base..HEAD
-'
-
-test_perf 'noop prune-empty' '
-	git checkout --detach tip &&
-	git filter-branch -f --prune-empty base..HEAD
-'
-
-test_done
diff --git a/t/t7003-filter-branch.sh b/t/t7003-filter-branch.sh
deleted file mode 100755
index e23de7d0b5..0000000000
--- a/t/t7003-filter-branch.sh
+++ /dev/null
@@ -1,505 +0,0 @@
-#!/bin/sh
-
-test_description='git filter-branch'
-. ./test-lib.sh
-. "$TEST_DIRECTORY/lib-gpg.sh"
-
-test_expect_success 'setup' '
-	test_commit A &&
-	GIT_COMMITTER_DATE="@0 +0000" GIT_AUTHOR_DATE="@0 +0000" &&
-	test_commit --notick B &&
-	git checkout -b branch B &&
-	test_commit D &&
-	mkdir dir &&
-	test_commit dir/D &&
-	test_commit E &&
-	git checkout master &&
-	test_commit C &&
-	git checkout branch &&
-	git merge C &&
-	git tag F &&
-	test_commit G &&
-	test_commit H
-'
-# * (HEAD, branch) H
-# * G
-# *   Merge commit 'C' into branch
-# |\
-# | * (master) C
-# * | E
-# * | dir/D
-# * | D
-# |/
-# * B
-# * A
-
-
-H=$(git rev-parse H)
-
-test_expect_success 'rewrite identically' '
-	git filter-branch branch
-'
-test_expect_success 'result is really identical' '
-	test $H = $(git rev-parse HEAD)
-'
-
-test_expect_success 'rewrite bare repository identically' '
-	(git config core.bare true && cd .git &&
-	 git filter-branch branch > filter-output 2>&1 &&
-	! fgrep fatal filter-output)
-'
-git config core.bare false
-test_expect_success 'result is really identical' '
-	test $H = $(git rev-parse HEAD)
-'
-
-TRASHDIR=$(pwd)
-test_expect_success 'correct GIT_DIR while using -d' '
-	mkdir drepo &&
-	( cd drepo &&
-	git init &&
-	test_commit drepo &&
-	git filter-branch -d "$TRASHDIR/dfoo" \
-		--index-filter "cp \"$TRASHDIR\"/dfoo/backup-refs \"$TRASHDIR\"" \
-	) &&
-	grep drepo "$TRASHDIR/backup-refs"
-'
-
-test_expect_success 'tree-filter works with -d' '
-	git init drepo-tree &&
-	(
-		cd drepo-tree &&
-		test_commit one &&
-		git filter-branch -d "$TRASHDIR/dfoo" \
-			--tree-filter "echo changed >one.t" &&
-		echo changed >expect &&
-		git cat-file blob HEAD:one.t >actual &&
-		test_cmp expect actual &&
-		test_cmp one.t actual
-	)
-'
-
-test_expect_success 'Fail if commit filter fails' '
-	test_must_fail git filter-branch -f --commit-filter "exit 1" HEAD
-'
-
-test_expect_success 'rewrite, renaming a specific file' '
-	git filter-branch -f --tree-filter "mv D.t doh || :" HEAD
-'
-
-test_expect_success 'test that the file was renamed' '
-	test D = "$(git show HEAD:doh --)" &&
-	! test -f D.t &&
-	test -f doh &&
-	test D = "$(cat doh)"
-'
-
-test_expect_success 'rewrite, renaming a specific directory' '
-	git filter-branch -f --tree-filter "mv dir diroh || :" HEAD
-'
-
-test_expect_success 'test that the directory was renamed' '
-	test dir/D = "$(git show HEAD:diroh/D.t --)" &&
-	! test -d dir &&
-	test -d diroh &&
-	! test -d diroh/dir &&
-	test -f diroh/D.t &&
-	test dir/D = "$(cat diroh/D.t)"
-'
-
-V=$(git rev-parse HEAD)
-
-test_expect_success 'populate --state-branch' '
-	git filter-branch --state-branch state -f --tree-filter "touch file || :" HEAD
-'
-
-W=$(git rev-parse HEAD)
-
-test_expect_success 'using --state-branch to skip already rewritten commits' '
-	test_when_finished git reset --hard $V &&
-	git reset --hard $V &&
-	git filter-branch --state-branch state -f --tree-filter "touch file || :" HEAD &&
-	test_cmp_rev $W HEAD
-'
-
-git tag oldD HEAD~4
-test_expect_success 'rewrite one branch, keeping a side branch' '
-	git branch modD oldD &&
-	git filter-branch -f --tree-filter "mv B.t boh || :" D..modD
-'
-
-test_expect_success 'common ancestor is still common (unchanged)' '
-	test "$(git merge-base modD D)" = "$(git rev-parse B)"
-'
-
-test_expect_success 'filter subdirectory only' '
-	mkdir subdir &&
-	touch subdir/new &&
-	git add subdir/new &&
-	test_tick &&
-	git commit -m "subdir" &&
-	echo H > A.t &&
-	test_tick &&
-	git commit -m "not subdir" A.t &&
-	echo A > subdir/new &&
-	test_tick &&
-	git commit -m "again subdir" subdir/new &&
-	git rm A.t &&
-	test_tick &&
-	git commit -m "again not subdir" &&
-	git branch sub &&
-	git branch sub-earlier HEAD~2 &&
-	git filter-branch -f --subdirectory-filter subdir \
-		refs/heads/sub refs/heads/sub-earlier
-'
-
-test_expect_success 'subdirectory filter result looks okay' '
-	test 2 = $(git rev-list sub | wc -l) &&
-	git show sub:new &&
-	test_must_fail git show sub:subdir &&
-	git show sub-earlier:new &&
-	test_must_fail git show sub-earlier:subdir
-'
-
-test_expect_success 'more setup' '
-	git checkout master &&
-	mkdir subdir &&
-	echo A > subdir/new &&
-	git add subdir/new &&
-	test_tick &&
-	git commit -m "subdir on master" subdir/new &&
-	git rm A.t &&
-	test_tick &&
-	git commit -m "again subdir on master" &&
-	git merge branch
-'
-
-test_expect_success 'use index-filter to move into a subdirectory' '
-	git branch directorymoved &&
-	git filter-branch -f --index-filter \
-		 "git ls-files -s | sed \"s-	-&newsubdir/-\" |
-	          GIT_INDEX_FILE=\$GIT_INDEX_FILE.new \
-			git update-index --index-info &&
-		  mv \"\$GIT_INDEX_FILE.new\" \"\$GIT_INDEX_FILE\"" directorymoved &&
-	git diff --exit-code HEAD directorymoved:newsubdir
-'
-
-test_expect_success 'stops when msg filter fails' '
-	old=$(git rev-parse HEAD) &&
-	test_must_fail git filter-branch -f --msg-filter false HEAD &&
-	test $old = $(git rev-parse HEAD) &&
-	rm -rf .git-rewrite
-'
-
-test_expect_success 'author information is preserved' '
-	: > i &&
-	git add i &&
-	test_tick &&
-	GIT_AUTHOR_NAME="B V Uips" git commit -m bvuips &&
-	git branch preserved-author &&
-	(sane_unset GIT_AUTHOR_NAME &&
-	 git filter-branch -f --msg-filter "cat; \
-			test \$GIT_COMMIT != $(git rev-parse master) || \
-			echo Hallo" \
-		preserved-author) &&
-	git rev-list --author="B V Uips" preserved-author >actual &&
-	test_line_count = 1 actual
-'
-
-test_expect_success "remove a certain author's commits" '
-	echo i > i &&
-	test_tick &&
-	git commit -m i i &&
-	git branch removed-author &&
-	git filter-branch -f --commit-filter "\
-		if [ \"\$GIT_AUTHOR_NAME\" = \"B V Uips\" ];\
-		then\
-			skip_commit \"\$@\";
-		else\
-			git commit-tree \"\$@\";\
-		fi" removed-author &&
-	cnt1=$(git rev-list master | wc -l) &&
-	cnt2=$(git rev-list removed-author | wc -l) &&
-	test $cnt1 -eq $(($cnt2 + 1)) &&
-	git rev-list --author="B V Uips" removed-author >actual &&
-	test_line_count = 0 actual
-'
-
-test_expect_success 'barf on invalid name' '
-	test_must_fail git filter-branch -f master xy-problem &&
-	test_must_fail git filter-branch -f HEAD^
-'
-
-test_expect_success '"map" works in commit filter' '
-	git filter-branch -f --commit-filter "\
-		parent=\$(git rev-parse \$GIT_COMMIT^) &&
-		mapped=\$(map \$parent) &&
-		actual=\$(echo \"\$@\" | sed \"s/^.*-p //\") &&
-		test \$mapped = \$actual &&
-		git commit-tree \"\$@\";" master~2..master &&
-	git rev-parse --verify master
-'
-
-test_expect_success 'Name needing quotes' '
-
-	git checkout -b rerere A &&
-	mkdir foo &&
-	name="れれれ" &&
-	>foo/$name &&
-	git add foo &&
-	git commit -m "Adding a file" &&
-	git filter-branch --tree-filter "rm -fr foo" &&
-	test_must_fail git ls-files --error-unmatch "foo/$name" &&
-	test $(git rev-parse --verify rerere) != $(git rev-parse --verify A)
-
-'
-
-test_expect_success 'Subdirectory filter with disappearing trees' '
-	git reset --hard &&
-	git checkout master &&
-
-	mkdir foo &&
-	touch foo/bar &&
-	git add foo &&
-	test_tick &&
-	git commit -m "Adding foo" &&
-
-	git rm -r foo &&
-	test_tick &&
-	git commit -m "Removing foo" &&
-
-	mkdir foo &&
-	touch foo/bar &&
-	git add foo &&
-	test_tick &&
-	git commit -m "Re-adding foo" &&
-
-	git filter-branch -f --subdirectory-filter foo &&
-	git rev-list master >actual &&
-	test_line_count = 3 actual
-'
-
-test_expect_success 'Tag name filtering retains tag message' '
-	git tag -m atag T &&
-	git cat-file tag T > expect &&
-	git filter-branch -f --tag-name-filter cat &&
-	git cat-file tag T > actual &&
-	test_cmp expect actual
-'
-
-faux_gpg_tag='object XXXXXX
-type commit
-tag S
-tagger T A Gger <tagger@xxxxxxxxxxx> 1206026339 -0500
-
-This is a faux gpg signed tag.
------BEGIN PGP SIGNATURE-----
-Version: FauxGPG v0.0.0 (FAUX/Linux)
-
-gdsfoewhxu/6l06f1kxyxhKdZkrcbaiOMtkJUA9ITAc1mlamh0ooasxkH1XwMbYQ
-acmwXaWET20H0GeAGP+7vow=
-=agpO
------END PGP SIGNATURE-----
-'
-test_expect_success 'Tag name filtering strips gpg signature' '
-	sha1=$(git rev-parse HEAD) &&
-	sha1t=$(echo "$faux_gpg_tag" | sed -e s/XXXXXX/$sha1/ | git mktag) &&
-	git update-ref "refs/tags/S" "$sha1t" &&
-	echo "$faux_gpg_tag" | sed -e s/XXXXXX/$sha1/ | head -n 6 > expect &&
-	git filter-branch -f --tag-name-filter cat &&
-	git cat-file tag S > actual &&
-	test_cmp expect actual
-'
-
-test_expect_success GPG 'Filtering retains message of gpg signed commit' '
-	mkdir gpg &&
-	touch gpg/foo &&
-	git add gpg &&
-	test_tick &&
-	git commit -S -m "Adding gpg" &&
-
-	git log -1 --format="%s" > expect &&
-	git filter-branch -f --msg-filter "cat" &&
-	git log -1 --format="%s" > actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'Tag name filtering allows slashes in tag names' '
-	git tag -m tag-with-slash X/1 &&
-	git cat-file tag X/1 | sed -e s,X/1,X/2, > expect &&
-	git filter-branch -f --tag-name-filter "echo X/2" &&
-	git cat-file tag X/2 > actual &&
-	test_cmp expect actual
-'
-test_expect_success 'setup --prune-empty comparisons' '
-	git checkout --orphan master-no-a &&
-	git rm -rf . &&
-	unset test_tick &&
-	test_tick &&
-	GIT_COMMITTER_DATE="@0 +0000" GIT_AUTHOR_DATE="@0 +0000" &&
-	test_commit --notick B B.t B Bx &&
-	git checkout -b branch-no-a Bx &&
-	test_commit D D.t D Dx &&
-	mkdir dir &&
-	test_commit dir/D dir/D.t dir/D dir/Dx &&
-	test_commit E E.t E Ex &&
-	git checkout master-no-a &&
-	test_commit C C.t C Cx &&
-	git checkout branch-no-a &&
-	git merge Cx -m "Merge tag '\''C'\'' into branch" &&
-	git tag Fx &&
-	test_commit G G.t G Gx &&
-	test_commit H H.t H Hx &&
-	git checkout branch
-'
-
-test_expect_success 'Prune empty commits' '
-	git rev-list HEAD > expect &&
-	test_commit to_remove &&
-	git filter-branch -f --index-filter "git update-index --remove to_remove.t" --prune-empty HEAD &&
-	git rev-list HEAD > actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'prune empty collapsed merges' '
-	test_config merge.ff false &&
-	git rev-list HEAD >expect &&
-	test_commit to_remove_2 &&
-	git reset --hard HEAD^ &&
-	test_merge non-ff to_remove_2 &&
-	git filter-branch -f --index-filter "git update-index --remove to_remove_2.t" --prune-empty HEAD &&
-	git rev-list HEAD >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'prune empty works even without index/tree filters' '
-	git rev-list HEAD >expect &&
-	git commit --allow-empty -m empty &&
-	git filter-branch -f --prune-empty HEAD &&
-	git rev-list HEAD >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success '--prune-empty is able to prune root commit' '
-	git rev-list branch-no-a >expect &&
-	git branch testing H &&
-	git filter-branch -f --prune-empty --index-filter "git update-index --remove A.t" testing &&
-	git rev-list testing >actual &&
-	git branch -D testing &&
-	test_cmp expect actual
-'
-
-test_expect_success '--prune-empty is able to prune entire branch' '
-	git branch prune-entire B &&
-	git filter-branch -f --prune-empty --index-filter "git update-index --remove A.t B.t" prune-entire &&
-	test_path_is_missing .git/refs/heads/prune-entire &&
-	test_must_fail git reflog exists refs/heads/prune-entire
-'
-
-test_expect_success '--remap-to-ancestor with filename filters' '
-	git checkout master &&
-	git reset --hard A &&
-	test_commit add-foo foo 1 &&
-	git branch moved-foo &&
-	test_commit add-bar bar a &&
-	git branch invariant &&
-	orig_invariant=$(git rev-parse invariant) &&
-	git branch moved-bar &&
-	test_commit change-foo foo 2 &&
-	git filter-branch -f --remap-to-ancestor \
-		moved-foo moved-bar A..master \
-		-- -- foo &&
-	test $(git rev-parse moved-foo) = $(git rev-parse moved-bar) &&
-	test $(git rev-parse moved-foo) = $(git rev-parse master^) &&
-	test $orig_invariant = $(git rev-parse invariant)
-'
-
-test_expect_success 'automatic remapping to ancestor with filename filters' '
-	git checkout master &&
-	git reset --hard A &&
-	test_commit add-foo2 foo 1 &&
-	git branch moved-foo2 &&
-	test_commit add-bar2 bar a &&
-	git branch invariant2 &&
-	orig_invariant=$(git rev-parse invariant2) &&
-	git branch moved-bar2 &&
-	test_commit change-foo2 foo 2 &&
-	git filter-branch -f \
-		moved-foo2 moved-bar2 A..master \
-		-- -- foo &&
-	test $(git rev-parse moved-foo2) = $(git rev-parse moved-bar2) &&
-	test $(git rev-parse moved-foo2) = $(git rev-parse master^) &&
-	test $orig_invariant = $(git rev-parse invariant2)
-'
-
-test_expect_success 'setup submodule' '
-	rm -fr ?* .git &&
-	git init &&
-	test_commit file &&
-	mkdir submod &&
-	submodurl="$PWD/submod" &&
-	( cd submod &&
-	  git init &&
-	  test_commit file-in-submod ) &&
-	git submodule add "$submodurl" &&
-	git commit -m "added submodule" &&
-	test_commit add-file &&
-	( cd submod && test_commit add-in-submodule ) &&
-	git add submod &&
-	git commit -m "changed submodule" &&
-	git branch original HEAD
-'
-
-orig_head=$(git show-ref --hash --head HEAD)
-
-test_expect_success 'rewrite submodule with another content' '
-	git filter-branch --tree-filter "test -d submod && {
-					 rm -rf submod &&
-					 git rm -rf --quiet submod &&
-					 mkdir submod &&
-					 : > submod/file
-					 } || :" HEAD &&
-	test $orig_head != $(git show-ref --hash --head HEAD)
-'
-
-test_expect_success 'replace submodule revision' '
-	git reset --hard original &&
-	git filter-branch -f --tree-filter \
-	    "if git ls-files --error-unmatch -- submod > /dev/null 2>&1
-	     then git update-index --cacheinfo 160000 0123456789012345678901234567890123456789 submod
-	     fi" HEAD &&
-	test $orig_head != $(git show-ref --hash --head HEAD)
-'
-
-test_expect_success 'filter commit message without trailing newline' '
-	git reset --hard original &&
-	commit=$(printf "no newline" | git commit-tree HEAD^{tree}) &&
-	git update-ref refs/heads/no-newline $commit &&
-	git filter-branch -f refs/heads/no-newline &&
-	echo $commit >expect &&
-	git rev-parse refs/heads/no-newline >actual &&
-	test_cmp expect actual
-'
-
-test_expect_success 'tree-filter deals with object name vs pathname ambiguity' '
-	test_when_finished "git reset --hard original" &&
-	ambiguous=$(git rev-list -1 HEAD) &&
-	git filter-branch --tree-filter "mv file.t $ambiguous" HEAD^.. &&
-	git show HEAD:$ambiguous
-'
-
-test_expect_success 'rewrite repository including refs that point at non-commit object' '
-	test_when_finished "git reset --hard original" &&
-	tree=$(git rev-parse HEAD^{tree}) &&
-	test_when_finished "git replace -d $tree" &&
-	echo A >new &&
-	git add new &&
-	new_tree=$(git write-tree) &&
-	git replace $tree $new_tree &&
-	git tag -a -m "tag to a tree" treetag $new_tree &&
-	git reset --hard HEAD &&
-	git filter-branch -f -- --all >filter-output 2>&1 &&
-	! fgrep fatal filter-output
-'
-
-test_done
diff --git a/t/t7009-filter-branch-null-sha1.sh b/t/t7009-filter-branch-null-sha1.sh
deleted file mode 100755
index 9ba9f24ad2..0000000000
--- a/t/t7009-filter-branch-null-sha1.sh
+++ /dev/null
@@ -1,55 +0,0 @@
-#!/bin/sh
-
-test_description='filter-branch removal of trees with null sha1'
-. ./test-lib.sh
-
-test_expect_success 'setup: base commits' '
-	test_commit one &&
-	test_commit two &&
-	test_commit three
-'
-
-test_expect_success 'setup: a commit with a bogus null sha1 in the tree' '
-	{
-		git ls-tree HEAD &&
-		printf "160000 commit $ZERO_OID\\tbroken\\n"
-	} >broken-tree &&
-	echo "add broken entry" >msg &&
-
-	tree=$(git mktree <broken-tree) &&
-	test_tick &&
-	commit=$(git commit-tree $tree -p HEAD <msg) &&
-	git update-ref HEAD "$commit"
-'
-
-# we have to make one more commit on top removing the broken
-# entry, since otherwise our index does not match HEAD (and filter-branch will
-# complain). We could make the index match HEAD, but doing so would involve
-# writing a null sha1 into the index.
-test_expect_success 'setup: bring HEAD and index in sync' '
-	test_tick &&
-	git commit -a -m "back to normal"
-'
-
-test_expect_success 'noop filter-branch complains' '
-	test_must_fail git filter-branch \
-		--force --prune-empty \
-		--index-filter "true"
-'
-
-test_expect_success 'filter commands are still checked' '
-	test_must_fail git filter-branch \
-		--force --prune-empty \
-		--index-filter "git rm --cached --ignore-unmatch three.t"
-'
-
-test_expect_success 'removing the broken entry works' '
-	echo three >expect &&
-	git filter-branch \
-		--force --prune-empty \
-		--index-filter "git rm --cached --ignore-unmatch broken" &&
-	git log -1 --format=%s >actual &&
-	test_cmp expect actual
-'
-
-test_done
diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 75512c3403..4e7f669c76 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -28,10 +28,10 @@ complete ()
 #
 # (2) A test makes sure that common subcommands are included in the
 #     completion for "git <TAB>", and a plumbing is excluded.  "add",
-#     "filter-branch" and "ls-files" are listed for this.
+#     "rebase" and "ls-files" are listed for this.
 
-GIT_TESTING_ALL_COMMAND_LIST='add checkout check-attr filter-branch ls-files'
-GIT_TESTING_PORCELAIN_COMMAND_LIST='add checkout filter-branch'
+GIT_TESTING_ALL_COMMAND_LIST='add checkout check-attr rebase ls-files'
+GIT_TESTING_PORCELAIN_COMMAND_LIST='add checkout rebase'
 
 . "$GIT_BUILD_DIR/contrib/completion/git-completion.bash"
 
@@ -1392,12 +1392,12 @@ test_expect_success 'basic' '
 	# built-in
 	grep -q "^add \$" out &&
 	# script
-	grep -q "^filter-branch \$" out &&
+	grep -q "^rebase \$" out &&
 	# plumbing
 	! grep -q "^ls-files \$" out &&
 
-	run_completion "git f" &&
-	! grep -q -v "^f" out
+	run_completion "git r" &&
+	! grep -q -v "^r" out
 '
 
 test_expect_success 'double dash "git" itself' '
-- 
2.23.0.5.g775ebaa2a0





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