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DESCRIPTION
-----------
git-svn is a simple conduit for changesets between a single Subversion
-branch and git.
-
-git-svn is not to be confused with git-svnimport. The were designed
-with very different goals in mind.
+branch and git. It is not to be confused with gitlink:git-svnimport[1].
+They were designed with very different goals in mind.
git-svn is designed for an individual developer who wants a
bidirectional flow of changesets between a single branch in Subversion
COMMANDS
--------
-init::
+--
+
+'init'::
Creates an empty git repository with additional metadata
directories for git-svn. The Subversion URL must be specified
as a command-line argument.
-fetch::
- Fetch unfetched revisions from the Subversion URL we are
- tracking. refs/remotes/git-svn will be updated to the
- latest revision.
+'fetch'::
+
+Fetch unfetched revisions from the Subversion URL we are
+tracking. refs/remotes/git-svn will be updated to the
+latest revision.
+
+Note: You should never attempt to modify the remotes/git-svn
+branch outside of git-svn. Instead, create a branch from
+remotes/git-svn and work on that branch. Use the 'commit'
+command (see below) to write git commits back to
+remotes/git-svn.
- Note: You should never attempt to modify the remotes/git-svn
- branch outside of git-svn. Instead, create a branch from
- remotes/git-svn and work on that branch. Use the 'commit'
- command (see below) to write git commits back to
- remotes/git-svn.
+See '<<fetch-args,Additional Fetch Arguments>>' if you are interested in
+manually joining branches on commit.
- See 'Additional Fetch Arguments' if you are interested in
- manually joining branches on commit.
+'dcommit'::
+ Commit all diffs from the current HEAD directly to the SVN
+ repository, and then rebase or reset (depending on whether or
+ not there is a diff between SVN and HEAD). It is recommended
+ that you run git-svn fetch and rebase (not pull) your commits
+ against the latest changes in the SVN repository.
+ This is advantageous over 'commit' (below) because it produces
+ cleaner, more linear history.
-commit::
+'commit'::
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
commit. All merging is assumed to have taken place
independently of git-svn functions.
-rebuild::
+'rebuild'::
Not a part of daily usage, but this is a useful command if
- you've just cloned a repository (using git-clone) that was
+ you've just cloned a repository (using gitlink:git-clone[1]) that was
tracked with git-svn. Unfortunately, git-clone does not clone
git-svn metadata and the svn working tree that git-svn uses for
its operations. This rebuilds the metadata so git-svn can
specified at the command-line if the directory/repository you're
tracking has moved or changed protocols.
-show-ignore::
+'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.
+--
+
OPTIONS
-------
+--
+
-r <ARG>::
--revision <ARG>::
- Only used with the 'fetch' command.
- Takes any valid -r<argument> svn would accept and passes it
- directly to svn. -r<ARG1>:<ARG2> ranges and "{" DATE "}" syntax
- is also supported. This is passed directly to svn, see svn
- documentation for more details.
+Only used with the 'fetch' command.
- This can allow you to make partial mirrors when running fetch.
+Takes any valid -r<argument> svn would accept and passes it
+directly to svn. -r<ARG1>:<ARG2> ranges and "{" DATE "}" syntax
+is also supported. This is passed directly to svn, see svn
+documentation for more details.
+
+This can allow you to make partial mirrors when running fetch.
-::
--stdin::
- Only used with the 'commit' 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.
+Only used with the 'commit' 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 'commit' command.
- 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.
+Only used with the 'commit' command.
- repo-config key: svn.rmdir
+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.
+
+repo-config key: svn.rmdir
-e::
--edit::
- Only used with the 'commit' command.
- 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.
+Only used with the 'commit' command.
+
+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.
- repo-config key: svn.edit
+repo-config key: svn.edit
-l<num>::
--find-copies-harder::
- Both of these are only used with the 'commit' command.
- They are both passed directly to git-diff-tree see
- git-diff-tree(1) for more information.
+Both of these are only used with the 'commit' command.
- repo-config key: svn.l
- repo-config key: svn.findcopiesharder
+They are both passed directly to git-diff-tree see
+gitlink:git-diff-tree[1] for more information.
+
+[verse]
+repo-config key: svn.l
+repo-config key: svn.findcopiesharder
-A<filename>::
--authors-file=<filename>::
- Syntax is compatible with the files used by git-svnimport and
- git-cvsimport:
+Syntax is compatible with the files used by git-svnimport and
+git-cvsimport:
------------------------------------------------------------------------
-loginname = Joe User <user@example.com>
+ 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.
+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.
+
+repo-config key: svn.authors-file
+
+-m::
+--merge::
+-s<strategy>::
+--strategy=<strategy>::
+
+These are only used with the 'dcommit' command.
+
+Passed directly to git-rebase when using 'dcommit' if a
+'git-reset' cannot be used (see dcommit).
+
+-n::
+--dry-run::
- repo-config key: svn.authors-file
+This is only used with the 'dcommit' command.
+
+Print out the series of git arguments that would show
+which diffs would be committed to SVN.
+
+--
ADVANCED OPTIONS
----------------
+--
+
-b<refname>::
--branch <refname>::
- Used with 'fetch' or 'commit'.
+Used with 'fetch' or 'commit'.
- This can be used to join arbitrary git branches to remotes/git-svn
- on new commits where the tree object is equivalent.
+This can be used to join arbitrary git branches to remotes/git-svn
+on new commits where the tree object is equivalent.
- When used with different GIT_SVN_ID values, tags and branches in
- SVN can be tracked this way, as can some merges where the heads
- end up having completely equivalent content. This can even be
- used to track branches across multiple SVN _repositories_.
+When used with different GIT_SVN_ID values, tags and branches in
+SVN can be tracked this way, as can some merges where the heads
+end up having completely equivalent content. This can even be
+used to track branches across multiple SVN _repositories_.
- This option may be specified multiple times, once for each
- branch.
+This option may be specified multiple times, once for each
+branch.
- repo-config key: svn.branch
+repo-config key: svn.branch
-i<GIT_SVN_ID>::
--id <GIT_SVN_ID>::
- This sets GIT_SVN_ID (instead of using the environment). See
- the section on "Tracking Multiple Repositories or Branches" for
- more information on using GIT_SVN_ID.
+
+This sets GIT_SVN_ID (instead of using the environment). See the
+section on
+'<<tracking-multiple-repos,Tracking Multiple Repositories or Branches>>'
+for more information on using GIT_SVN_ID.
+
+--
COMPATIBILITY OPTIONS
---------------------
+--
+
--upgrade::
- Only used with the 'rebuild' command.
+Only used with the 'rebuild' command.
- Run this if you used an old version of git-svn that used
- "git-svn-HEAD" instead of "remotes/git-svn" as the branch
- for tracking the remote.
+Run this if you used an old version of git-svn that used
+"git-svn-HEAD" instead of "remotes/git-svn" as the branch
+for tracking the remote.
--no-ignore-externals::
- Only used with the 'fetch' and 'rebuild' command.
+Only used with the 'fetch' and 'rebuild' command.
+
+By default, git-svn passes --ignore-externals to svn to avoid
+fetching svn:external trees into git. Pass this flag to enable
+externals tracking directly via git.
+
+Versions of svn that do not support --ignore-externals are
+automatically detected and this flag will be automatically
+enabled for them.
- By default, git-svn passes --ignore-externals to svn to avoid
- fetching svn:external trees into git. Pass this flag to enable
- externals tracking directly via git.
+Otherwise, do not enable this flag unless you know what you're
+doing.
- Versions of svn that do not support --ignore-externals are
- automatically detected and this flag will be automatically
- enabled for them.
+repo-config key: svn.noignoreexternals
- Otherwise, do not enable this flag unless you know what you're
- doing.
+--ignore-nodate::
+Only used with the 'fetch' command.
- repo-config key: svn.noignoreexternals
+By default git-svn will crash if it tries to import a revision
+from SVN which has '(no date)' listed as the date of the revision.
+This is repository corruption on SVN's part, plain and simple.
+But sometimes you really need those revisions anyway.
+
+If supplied git-svn will convert '(no date)' entries to the UNIX
+epoch (midnight on Jan. 1, 1970). Yes, that's probably very wrong.
+SVN was very wrong.
+
+--
Basic Examples
~~~~~~~~~~~~~~
git-svn commit <tree-ish> [<tree-ish_2> ...]
# Commit all the git commits from my-branch that don't exist in SVN:
git-svn commit remotes/git-svn..my-branch
-# Something is committed to SVN, pull the latest into your branch:
- git-svn fetch && git pull . remotes/git-svn
+# Something is committed to SVN, rebase the latest into your branch:
+ git-svn fetch && git rebase remotes/git-svn
# Append svn:ignore settings to the default git exclude file:
git-svn show-ignore >> .git/info/exclude
------------------------------------------------------------------------
+REBASE VS. PULL
+---------------
+
+Originally, git-svn recommended that the remotes/git-svn branch be
+pulled from. This is because the author favored 'git-svn commit B'
+to commit a single head rather than the 'git-svn commit A..B' notation
+to commit multiple commits.
+
+If you use 'git-svn commit A..B' to commit several diffs and you do not
+have the latest remotes/git-svn merged into my-branch, you should use
+'git rebase' to update your work branch instead of 'git pull'. 'pull'
+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
entirely up to the user on the git side. It's simply not worth it to do
a useful translation when the original signal is weak.
+[[tracking-multiple-repos]]
TRACKING MULTIPLE REPOSITORIES OR BRANCHES
------------------------------------------
This is for advanced users, most users should ignore this section.
remotes/git-svn. Any remotes/$GIT_SVN_ID branch should never be modified
by the user outside of git-svn commands.
+[[fetch-args]]
ADDITIONAL FETCH ARGUMENTS
--------------------------
This is for advanced users, most users should ignore this section.
command-line. Unfetched SVN revisions may also be tied to particular
git commits with the following syntax:
+------------------------------------------------
svn_revision_number=git_commit_sha1
+------------------------------------------------
-This allows you to tie unfetched SVN revision 375 to your current HEAD::
+This allows you to tie unfetched SVN revision 375 to your current HEAD:
- `git-svn fetch 375=$(git-rev-parse HEAD)`
+------------------------------------------------
+ git-svn fetch 375=$(git-rev-parse HEAD)
+------------------------------------------------
Advanced Example: Tracking a Reorganized Repository
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
copied files are fully supported if they're similar enough for git to
detect them.
+SEE ALSO
+--------
+gitlink:git-rebase[1]
+
Author
------
Written by Eric Wong <normalperson@yhbt.net>.