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 set according to the current commit.
+and GIT_COMMITTER_DATE are set according to the current commit. 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
This is the filter for modifying the environment in which
the commit will be performed. Specifically, you might want
to rewrite the author/committer name/email/time environment
- variables (see gitlink:git-commit[1] for details). Do not forget
+ variables (see linkgit:git-commit[1] for details). Do not forget
to re-export the variables.
--tree-filter <command>::
--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. For hairy cases, see gitlink:git-update-index[1].
+ faster. 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
- a format accepted by gitlink:git-commit-tree[1]: empty for
+ a format accepted by 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.
--commit-filter <command>::
This is the filter for performing the commit.
If this filter is specified, it will be called instead of the
- gitlink:git-commit-tree[1] command, with arguments of the form
+ linkgit:git-commit-tree[1] 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.
+
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 gitlink:git-rebase[1] instead).
+that, use linkgit:git-rebase[1] instead).
--tag-name-filter <command>::
This is the filter for rewriting tag names. When passed,
<rev-list-options>::
When options are given after the new branch name, they will
- be passed to gitlink:git-rev-list[1]. Only commits in the resulting
+ be passed to linkgit:git-rev-list[1]. Only commits in the resulting
output will be filtered, although the filtered commits can still
reference parents which are outside of that set.
--------------------------------------------------------------------------
git filter-branch --parent-filter \
- 'cat; test $GIT_COMMIT = <commit-id> && echo "-p <graft-id>"' HEAD
+ 'test $GIT_COMMIT = <commit-id> && echo "-p <graft-id>" || cat' HEAD
--------------------------------------------------------------------------
or even simpler:
and all children of the merge will become merge commits with P1,P2
as their parents instead of the merge commit.
+You can rewrite the commit log messages using `--message-filter`. For
+example, `git-svn-id` strings in a repository created by `git-svn` can
+be removed this way:
+
+-------------------------------------------------------
+git filter-branch --message-filter '
+ sed -e "/^git-svn-id:/d"
+'
+-------------------------------------------------------
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
*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 gitlink:git-rebase[1].
+interactive mode of linkgit:git-rebase[1].
Consider this history:
GIT
---
-Part of the gitlink:git[7] suite
+Part of the linkgit:git[7] suite