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git-svn(1)
==========
 
NAME
----
git-svn - Bidirectional operation between a single Subversion branch and git
 
SYNOPSIS
--------
'git svn' <command> [options] [arguments]
 
DESCRIPTION
-----------
'git-svn' is a simple conduit for changesets between Subversion and git.
It provides a bidirectional flow of changes between a Subversion and a git
repository.
 
'git-svn' can track a single Subversion branch simply by using a
URL to the branch, follow branches laid out in the Subversion recommended
method (trunk, branches, tags directories) with the --stdlayout option, or
follow branches in any layout with the -T/-t/-b options (see options to
'init' below, and also the 'clone' command).
 
Once tracking a Subversion branch (with any of the above methods), the git
repository can be updated from Subversion by the 'fetch' command and
Subversion updated from git by the 'dcommit' command.
 
COMMANDS
--------
--
 
'init'::
	Initializes an empty git repository with additional
	metadata directories for 'git-svn'.  The Subversion URL
	may be specified as a command-line argument, or as full
	URL arguments to -T/-t/-b.  Optionally, the target
	directory to operate on can be specified as a second
	argument.  Normally this command initializes the current
	directory.
 
-T<trunk_subdir>;;
--trunk=<trunk_subdir>;;
-t<tags_subdir>;;
--tags=<tags_subdir>;;
-b<branches_subdir>;;
--branches=<branches_subdir>;;
-s;;
--stdlayout;;
	These are optional command-line options for init.  Each of
	these flags can point to a relative repository path
	(--tags=project/tags') or a full url
	(--tags=https://foo.org/project/tags). The option --stdlayout is
	a shorthand way of setting trunk,tags,branches as the relative paths,
	which is the Subversion default. If any of the other options are given
	as well, they take precedence.
--no-metadata;;
	Set the 'noMetadata' option in the [svn-remote] config.
--use-svm-props;;
	Set the 'useSvmProps' option in the [svn-remote] config.
--use-svnsync-props;;
	Set the 'useSvnsyncProps' option in the [svn-remote] config.
--rewrite-root=<URL>;;
	Set the 'rewriteRoot' option in the [svn-remote] config.
--use-log-author;;
	When retrieving svn commits into git (as part of fetch, rebase, or
	dcommit operations), look for the first From: or Signed-off-by: line
	in the log message and use that as the author string.
--add-author-from;;
	When committing to svn from git (as part of commit or dcommit
	operations), if the existing log message doesn't already have a
	From: or Signed-off-by: line, append a From: line based on the
	git commit's author string.  If you use this, then --use-log-author
	will retrieve a valid author string for all commits.
--username=<USER>;;
	For transports that SVN handles authentication for (http,
	https, and plain svn), specify the username.  For other
	transports (eg svn+ssh://), you must include the username in
	the URL, eg svn+ssh://foo@svn.bar.com/project
--prefix=<prefix>;;
	This allows one to specify a prefix which is prepended
	to the names of remotes if trunk/branches/tags are
	specified.  The prefix does not automatically include a
	trailing slash, so be sure you include one in the
	argument if that is what you want.  If --branches/-b is
	specified, the prefix must include a trailing slash.
	Setting a prefix is useful if you wish to track multiple
	projects that share a common repository.
--ignore-paths=<regex>;;
	When passed to 'init' or 'clone' this regular expression will
	be preserved as a config key.  See 'fetch' for a description
	of '--ignore-paths'.
 
'fetch'::
	Fetch unfetched revisions from the Subversion remote we are
	tracking.  The name of the [svn-remote "..."] section in the
	.git/config file may be specified as an optional command-line
	argument.
 
--localtime;;
	Store Git commit times in the local timezone instead of UTC.  This
	makes 'git-log' (even without --date=local) show the same times
	that `svn log` would in the local timezone.
 
--parent;;
	Fetch only from the SVN parent of the current HEAD.
 
This doesn't interfere with interoperating with the Subversion
repository you cloned from, but if you wish for your local Git
repository to be able to interoperate with someone else's local Git
repository, either don't use this option or you should both use it in
the same local timezone.
 
--ignore-paths=<regex>;;
	This allows one to specify a Perl regular expression that will
	cause skipping of all matching paths from checkout from SVN.
	The '--ignore-paths' option should match for every 'fetch'
	(including automatic fetches due to 'clone', 'dcommit',
	'rebase', etc) on a given repository.
 
config key: svn-remote.<name>.ignore-paths
 
	If the ignore-paths config key is set and the command
	line option is also given, both regular expressions
	will be used.
 
Examples:
 
	--ignore-paths="^doc" - skip "doc*" directory for every
	    fetch.
 
	--ignore-paths="^[^/]+/(?:branches|tags)" - skip
	    "branches" and "tags" of first level directories.
 
'clone'::
	Runs 'init' and 'fetch'.  It will automatically create a
	directory based on the basename of the URL passed to it;
	or if a second argument is passed; it will create a directory
	and work within that.  It accepts all arguments that the
	'init' and 'fetch' commands accept; with the exception of
	'--fetch-all'.   After a repository is cloned, the 'fetch'
	command will be able to update revisions without affecting
	the working tree; and the 'rebase' command will be able
	to update the working tree with the latest changes.
 
'rebase'::
	This fetches revisions from the SVN parent of the current HEAD
	and rebases the current (uncommitted to SVN) work against it.
 
This works similarly to `svn update` or 'git-pull' except that
it preserves linear history with 'git-rebase' instead of
'git-merge' for ease of dcommitting with 'git-svn'.
 
This accepts all options that 'git-svn fetch' and 'git-rebase'
accept.  However, '--fetch-all' only fetches from the current
[svn-remote], and not all [svn-remote] definitions.
 
Like 'git-rebase'; this requires that the working tree be clean
and have no uncommitted changes.
 
-l;;
--local;;
	Do not fetch remotely; only run 'git-rebase' against the
	last fetched commit from the upstream SVN.
 
'dcommit'::
	Commit each diff from a specified head directly to the SVN
	repository, and then rebase or reset (depending on whether or
	not there is a diff between SVN and head).  This will create
	a revision in SVN for each commit in git.
	It is recommended that you run 'git-svn' fetch and rebase (not
	pull or merge) your commits against the latest changes in the
	SVN repository.
	An optional command-line argument may be specified as an
	alternative to HEAD.
	This is advantageous over 'set-tree' (below) because it produces
	cleaner, more linear history.
+
--no-rebase;;
	After committing, do not rebase or reset.
--commit-url <URL>;;
	Commit to this SVN URL (the full path).  This is intended to
	allow existing git-svn repositories created with one transport
	method (e.g. `svn://` or `http://` for anonymous read) to be
	reused if a user is later given access to an alternate transport
	method (e.g. `svn+ssh://` or `https://`) for commit.
 
config key: svn-remote.<name>.commiturl
 
config key: svn.commiturl (overwrites all svn-remote.<name>.commiturl options)
 
	Using this option for any other purpose (don't ask)
	is very strongly discouraged.
--
 
'branch'::
	Create a branch in the SVN repository.
 
-m;;
--message;;
	Allows to specify the commit message.
 
-t;;
--tag;;
	Create a tag by using the tags_subdir instead of the branches_subdir
	specified during git svn init.
 
'tag'::
	Create a tag in the SVN repository. This is a shorthand for
	'branch -t'.
 
'log'::
	This should make it easy to look up svn log messages when svn
	users refer to -r/--revision numbers.
+
The following features from `svn log' are supported:
+
--
--revision=<n>[:<n>];;
	is supported, non-numeric args are not:
	HEAD, NEXT, BASE, PREV, etc ...
-v/--verbose;;
	it's not completely compatible with the --verbose
	output in svn log, but reasonably close.
--limit=<n>;;
	is NOT the same as --max-count, doesn't count
	merged/excluded commits
--incremental;;
	supported
--
+
New features:
+
--
--show-commit;;
	shows the git commit sha1, as well
--oneline;;
	our version of --pretty=oneline
--
+
NOTE: SVN itself only stores times in UTC and nothing else. The regular svn
client converts the UTC time to the local time (or based on the TZ=
environment). This command has the same behaviour.
+
Any other arguments are passed directly to 'git-log'
 
'blame'::
       Show what revision and author last modified each line of a file. The
       output of this mode is format-compatible with the output of
       `svn blame' by default. Like the SVN blame command,
       local uncommitted changes in the working copy are ignored;
       the version of the file in the HEAD revision is annotated. Unknown
       arguments are passed directly to 'git-blame'.
+
--git-format;;
	Produce output in the same format as 'git-blame', but with
	SVN revision numbers instead of git commit hashes. In this mode,
	changes that haven't been committed to SVN (including local
	working-copy edits) are shown as revision 0.
 
--
'find-rev'::
	When given an SVN revision number of the form 'rN', returns the
	corresponding git commit hash (this can optionally be followed by a
	tree-ish to specify which branch should be searched).  When given a
	tree-ish, returns the corresponding SVN revision number.
 
'set-tree'::
	You should consider using 'dcommit' instead of this command.
	Commit specified commit or tree objects to SVN.  This relies on
	your imported fetch data being up-to-date.  This makes
	absolutely no attempts to do patching when committing to SVN, it
	simply overwrites files with those specified in the tree or
	commit.  All merging is assumed to have taken place
	independently of 'git-svn' functions.
 
'create-ignore'::
	Recursively finds the svn:ignore property on directories and
	creates matching .gitignore files. The resulting files are staged to
	be committed, but are not committed. Use -r/--revision to refer to a
	specific revision.
 
'show-ignore'::
	Recursively finds and lists the svn:ignore property on
	directories.  The output is suitable for appending to
	the $GIT_DIR/info/exclude file.
 
'commit-diff'::
	Commits the diff of two tree-ish arguments from the
	command-line.  This command does not rely on being inside an `git-svn
	init`-ed repository.  This command takes three arguments, (a) the
	original tree to diff against, (b) the new tree result, (c) the
	URL of the target Subversion repository.  The final argument
	(URL) may be omitted if you are working from a 'git-svn'-aware
	repository (that has been `init`-ed with 'git-svn').
	The -r<revision> option is required for this.
 
'info'::
	Shows information about a file or directory similar to what
	`svn info' provides.  Does not currently support a -r/--revision
	argument.  Use the --url option to output only the value of the
	'URL:' field.
 
'proplist'::
	Lists the properties stored in the Subversion repository about a
	given file or directory.  Use -r/--revision to refer to a specific
	Subversion revision.
 
'propget'::
	Gets the Subversion property given as the first argument, for a
	file.  A specific revision can be specified with -r/--revision.
 
'show-externals'::
	Shows the Subversion externals.  Use -r/--revision to specify a
	specific revision.
 
--
 
OPTIONS
-------
--
 
--shared[={false|true|umask|group|all|world|everybody}]::
--template=<template_directory>::
	Only used with the 'init' command.
	These are passed directly to 'git-init'.
 
-r <ARG>::
--revision <ARG>::
 
Used with the 'fetch' command.
 
This allows revision ranges for partial/cauterized history
to be supported.  $NUMBER, $NUMBER1:$NUMBER2 (numeric ranges),
$NUMBER:HEAD, and BASE:$NUMBER are all supported.
 
This can allow you to make partial mirrors when running fetch;
but is generally not recommended because history will be skipped
and lost.
 
-::
--stdin::
 
Only used with the 'set-tree' command.
 
Read a list of commits from stdin and commit them in reverse
order.  Only the leading sha1 is read from each line, so
'git-rev-list --pretty=oneline' output can be used.
 
--rmdir::
 
Only used with the 'dcommit', 'set-tree' and 'commit-diff' commands.
 
Remove directories from the SVN tree if there are no files left
behind.  SVN can version empty directories, and they are not
removed by default if there are no files left in them.  git
cannot version empty directories.  Enabling this flag will make
the commit to SVN act like git.
 
config key: svn.rmdir
 
-e::
--edit::
 
Only used with the 'dcommit', 'set-tree' and 'commit-diff' commands.
 
Edit the commit message before committing to SVN.  This is off by
default for objects that are commits, and forced on when committing
tree objects.
 
config key: svn.edit
 
-l<num>::
--find-copies-harder::
 
Only used with the 'dcommit', 'set-tree' and 'commit-diff' commands.
 
They are both passed directly to 'git-diff-tree'; see
linkgit:git-diff-tree[1] for more information.
 
[verse]
config key: svn.l
config key: svn.findcopiesharder
 
-A<filename>::
--authors-file=<filename>::
 
Syntax is compatible with the file used by 'git-cvsimport':
 
------------------------------------------------------------------------
	loginname = Joe User <user@example.com>
------------------------------------------------------------------------
 
If this option is specified and 'git-svn' encounters an SVN
committer name that does not exist in the authors-file, 'git-svn'
will abort operation. The user will then have to add the
appropriate entry.  Re-running the previous 'git-svn' command
after the authors-file is modified should continue operation.
 
config key: svn.authorsfile
 
-q::
--quiet::
	Make 'git-svn' less verbose. Specify a second time to make it
	even less verbose.
 
--repack[=<n>]::
--repack-flags=<flags>::
 
These should help keep disk usage sane for large fetches
with many revisions.
 
--repack takes an optional argument for the number of revisions
to fetch before repacking.  This defaults to repacking every
1000 commits fetched if no argument is specified.
 
--repack-flags are passed directly to 'git-repack'.
 
[verse]
config key: svn.repack
config key: svn.repackflags
 
-m::
--merge::
-s<strategy>::
--strategy=<strategy>::
 
These are only used with the 'dcommit' and 'rebase' commands.
 
Passed directly to 'git-rebase' when using 'dcommit' if a
'git-reset' cannot be used (see 'dcommit').
 
-n::
--dry-run::
 
This can be used with the 'dcommit', 'rebase', 'branch' and 'tag'
commands.
 
For 'dcommit', print out the series of git arguments that would show
which diffs would be committed to SVN.
 
For 'rebase', display the local branch associated with the upstream svn
repository associated with the current branch and the URL of svn
repository that will be fetched from.
 
For 'branch' and 'tag', display the urls that will be used for copying when
creating the branch or tag.
 
--
 
ADVANCED OPTIONS
----------------
--
 
-i<GIT_SVN_ID>::
--id <GIT_SVN_ID>::
 
This sets GIT_SVN_ID (instead of using the environment).  This
allows the user to override the default refname to fetch from
when tracking a single URL.  The 'log' and 'dcommit' commands
no longer require this switch as an argument.
 
-R<remote name>::
--svn-remote <remote name>::
	Specify the [svn-remote "<remote name>"] section to use,
	this allows SVN multiple repositories to be tracked.
	Default: "svn"
 
--follow-parent::
	This is especially helpful when we're tracking a directory
	that has been moved around within the repository, or if we
	started tracking a branch and never tracked the trunk it was
	descended from. This feature is enabled by default, use
	--no-follow-parent to disable it.
 
config key: svn.followparent
 
--
CONFIG FILE-ONLY OPTIONS
------------------------
--
 
svn.noMetadata::
svn-remote.<name>.noMetadata::
 
This gets rid of the 'git-svn-id:' lines at the end of every commit.
 
If you lose your .git/svn/git-svn/.rev_db file, 'git-svn' will not
be able to rebuild it and you won't be able to fetch again,
either.  This is fine for one-shot imports.
 
The 'git-svn log' command will not work on repositories using
this, either.  Using this conflicts with the 'useSvmProps'
option for (hopefully) obvious reasons.
 
svn.useSvmProps::
svn-remote.<name>.useSvmProps::
 
This allows 'git-svn' to re-map repository URLs and UUIDs from
mirrors created using SVN::Mirror (or svk) for metadata.
 
If an SVN revision has a property, "svm:headrev", it is likely
that the revision was created by SVN::Mirror (also used by SVK).
The property contains a repository UUID and a revision.  We want
to make it look like we are mirroring the original URL, so
introduce a helper function that returns the original identity
URL and UUID, and use it when generating metadata in commit
messages.
 
svn.useSvnsyncProps::
svn-remote.<name>.useSvnsyncprops::
	Similar to the useSvmProps option; this is for users
	of the svnsync(1) command distributed with SVN 1.4.x and
	later.
 
svn-remote.<name>.rewriteRoot::
	This allows users to create repositories from alternate
	URLs.  For example, an administrator could run 'git-svn' on the
	server locally (accessing via file://) but wish to distribute
	the repository with a public http:// or svn:// URL in the
	metadata so users of it will see the public URL.
 
svn.brokenSymlinkWorkaround::
This disables potentially expensive checks to workaround broken symlinks
checked into SVN by broken clients.  Set this option to "false" if you
track a SVN repository with many empty blobs that are not symlinks.
This option may be changed while "git-svn" is running and take effect on
the next revision fetched.  If unset, git-svn assumes this option to be
"true".
 
--
 
Since the noMetadata, rewriteRoot, useSvnsyncProps and useSvmProps
options all affect the metadata generated and used by 'git-svn'; they
*must* be set in the configuration file before any history is imported
and these settings should never be changed once they are set.
 
Additionally, only one of these four options can be used per-svn-remote
section because they affect the 'git-svn-id:' metadata line.
 
 
BASIC EXAMPLES
--------------
 
Tracking and contributing to the trunk of a Subversion-managed project:
 
------------------------------------------------------------------------
# Clone a repo (like git clone):
	git svn clone http://svn.example.com/project/trunk
# Enter the newly cloned directory:
	cd trunk
# You should be on master branch, double-check with git-branch
	git branch
# Do some work and commit locally to git:
	git commit ...
# Something is committed to SVN, rebase your local changes against the
# latest changes in SVN:
	git svn rebase
# Now commit your changes (that were committed previously using git) to SVN,
# as well as automatically updating your working HEAD:
	git svn dcommit
# Append svn:ignore settings to the default git exclude file:
	git svn show-ignore >> .git/info/exclude
------------------------------------------------------------------------
 
Tracking and contributing to an entire Subversion-managed project
(complete with a trunk, tags and branches):
 
------------------------------------------------------------------------
# Clone a repo (like git clone):
	git svn clone http://svn.example.com/project -T trunk -b branches -t tags
# View all branches and tags you have cloned:
	git branch -r
# Create a new branch in SVN
    git svn branch waldo
# Reset your master to trunk (or any other branch, replacing 'trunk'
# with the appropriate name):
	git reset --hard remotes/trunk
# You may only dcommit to one branch/tag/trunk at a time.  The usage
# of dcommit/rebase/show-ignore should be the same as above.
------------------------------------------------------------------------
 
The initial 'git-svn clone' can be quite time-consuming
(especially for large Subversion repositories). If multiple
people (or one person with multiple machines) want to use
'git-svn' to interact with the same Subversion repository, you can
do the initial 'git-svn clone' to a repository on a server and
have each person clone that repository with 'git-clone':
 
------------------------------------------------------------------------
# Do the initial import on a server
	ssh server "cd /pub && git svn clone http://svn.example.com/project
# Clone locally - make sure the refs/remotes/ space matches the server
	mkdir project
	cd project
	git init
	git remote add origin server:/pub/project
	git config --add remote.origin.fetch '+refs/remotes/*:refs/remotes/*'
	git fetch
# Create a local branch from one of the branches just fetched
	git checkout -b master FETCH_HEAD
# Initialize git-svn locally (be sure to use the same URL and -T/-b/-t options as were used on server)
	git svn init http://svn.example.com/project
# Pull the latest changes from Subversion
	git svn rebase
------------------------------------------------------------------------
 
REBASE VS. PULL/MERGE
---------------------
 
Originally, 'git-svn' recommended that the 'remotes/git-svn' branch be
pulled or merged from.  This is because the author favored
`git svn set-tree B` to commit a single head rather than the
`git svn set-tree A..B` notation to commit multiple commits.
 
If you use `git svn set-tree A..B` to commit several diffs and you do
not have the latest remotes/git-svn merged into my-branch, you should
use `git svn rebase` to update your work branch instead of `git pull` or
`git merge`.  `pull`/`merge' can cause non-linear history to be flattened
when committing into SVN, which can lead to merge commits reversing
previous commits in SVN.
 
DESIGN PHILOSOPHY
-----------------
Merge tracking in Subversion is lacking and doing branched development
with Subversion can be cumbersome as a result.  While 'git-svn' can track
copy history (including branches and tags) for repositories adopting a
standard layout, it cannot yet represent merge history that happened
inside git back upstream to SVN users.  Therefore it is advised that
users keep history as linear as possible inside git to ease
compatibility with SVN (see the CAVEATS section below).
 
CAVEATS
-------
 
For the sake of simplicity and interoperating with a less-capable system
(SVN), it is recommended that all 'git-svn' users clone, fetch and dcommit
directly from the SVN server, and avoid all 'git-clone'/'pull'/'merge'/'push'
operations between git repositories and branches.  The recommended
method of exchanging code between git branches and users is
'git-format-patch' and 'git-am', or just 'dcommit'ing to the SVN repository.
 
Running 'git-merge' or 'git-pull' is NOT recommended on a branch you
plan to 'dcommit' from.  Subversion does not represent merges in any
reasonable or useful fashion; so users using Subversion cannot see any
merges you've made.  Furthermore, if you merge or pull from a git branch
that is a mirror of an SVN branch, 'dcommit' may commit to the wrong
branch.
 
'git-clone' does not clone branches under the refs/remotes/ hierarchy or
any 'git-svn' metadata, or config.  So repositories created and managed with
using 'git-svn' should use 'rsync' for cloning, if cloning is to be done
at all.
 
Since 'dcommit' uses rebase internally, any git branches you 'git-push' to
before 'dcommit' on will require forcing an overwrite of the existing ref
on the remote repository.  This is generally considered bad practice,
see the linkgit:git-push[1] documentation for details.
 
Do not use the --amend option of linkgit:git-commit[1] on a change you've
already dcommitted.  It is considered bad practice to --amend commits
you've already pushed to a remote repository for other users, and
dcommit with SVN is analogous to that.
 
BUGS
----
 
We ignore all SVN properties except svn:executable.  Any unhandled
properties are logged to $GIT_DIR/svn/<refname>/unhandled.log
 
Renamed and copied directories are not detected by git and hence not
tracked when committing to SVN.  I do not plan on adding support for
this as it's quite difficult and time-consuming to get working for all
the possible corner cases (git doesn't do it, either).  Committing
renamed and copied files are fully supported if they're similar enough
for git to detect them.
 
CONFIGURATION
-------------
 
'git-svn' stores [svn-remote] configuration information in the
repository .git/config file.  It is similar the core git
[remote] sections except 'fetch' keys do not accept glob
arguments; but they are instead handled by the 'branches'
and 'tags' keys.  Since some SVN repositories are oddly
configured with multiple projects glob expansions such those
listed below are allowed:
 
------------------------------------------------------------------------
[svn-remote "project-a"]
	url = http://server.org/svn
	fetch = trunk/project-a:refs/remotes/project-a/trunk
	branches = branches/*/project-a:refs/remotes/project-a/branches/*
	tags = tags/*/project-a:refs/remotes/project-a/tags/*
------------------------------------------------------------------------
 
Keep in mind that the '\*' (asterisk) wildcard of the local ref
(right of the ':') *must* be the farthest right path component;
however the remote wildcard may be anywhere as long as it's own
independent path component (surrounded by '/' or EOL).   This
type of configuration is not automatically created by 'init' and
should be manually entered with a text-editor or using 'git-config'.
 
SEE ALSO
--------
linkgit:git-rebase[1]
 
Author
------
Written by Eric Wong <normalperson@yhbt.net>.
 
Documentation
-------------
Written by Eric Wong <normalperson@yhbt.net>.