这里针对1.7版本的svn。

merge是svn命令中比较麻烦的一个，所以特别记录一下。

下面链接有一个gui使用的例子：

http://blog.csdn.net/keda8997110/article/details/21813035

命令行的例子如下：

http://svnbook.red-bean.com/nightly/zh/svn.branchmerge.basicmerging.html#ftn.idp7707344

保持分支同步，从主干合并修改到分支：

$ pwd/home/user/my-calc-branch$ svn merge ^/calc/trunk--- Merging r345 through r356 into ‘.‘:U    button.cU    integer.c$

$ svn status M      .M       button.cM       integer.c$

$ svn commit -m "Merged latest trunk changes to my-calc-branch."Sending        .Sending        button.cSending        integer.cTransmitting file data ..Committed revision 357.$

重新集成分支，和并分支修改到主干：

$ pwd/home/user/calc-trunk$ svn update  # (make sure the working copy is up to date)At revision 390.$ svn merge --reintegrate ^/calc/branches/my-calc-branch--- Merging differences between repository URLs into ‘.‘:U    button.cU    integer.cU    Makefile U   .$ # build, test, verify, ...$ svn commit -m "Merge my-calc-branch back into trunk!"Sending        .Sending        button.cSending        integer.cSending        MakefileTransmitting file data ..Committed revision 391.

$ svn delete ^/calc/branches/my-calc-branch       -m "Remove my-calc-branch, reintegrated with trunk in r391."Committed revision 392.

svn各个版本改进：

http://subversion.apache.org/docs/release-notes/1.5.html#merge-tracking

Merge tracking (foundational) (client and server)

Merging changes from (say) trunk to a branch no longer requires that you specify the revision range. Instead, each time you want to sync up with trunk, you can just do:

   $ cd BRANCH_WORKING_COPY   $ svn merge URL_TO_TRUNK

Subversion will figure out what changes from URL_TO_TRUNK have not yet been merged and pull in just those changes. When it‘s time to merge the branch back to trunk, do this:

   $ cd TRUNK_WORKING_COPY   $ svn merge --reintegrate URL_TO_BRANCH

http://subversion.apache.org/docs/release-notes/1.6.html#repository-root-relative-urls

Repository root relative URLs (client)

This section is currently incomplete, please help write it! See the design notes for more information.

   $ svn SUBCOMMAND ^/   $ svn SUBCOMMAND ^/PATH

http://subversion.apache.org/docs/release-notes/1.8.html#auto-reintegrate

Automatic reintegration merge (--reintegrate option deprecated) ?

During merges which merge all eligible revisions from another branch, Subversion 1.8 will automatically decide whether or not the merge is reintegrating a branch. Therefore, reintegrating a branch does no longer require the --reintegrate option for correct operation.

The --reintegrate option of svn merge is now deprecated and its use is discouraged. To reintegrate a branch, have a clean working copy of trunk and run the following command in its top-level directory:

$ svn merge ^/branches/my-branch

svn merge