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diff --git a/third_party/git/Documentation/howto/using-merge-subtree.txt b/third_party/git/Documentation/howto/using-merge-subtree.txt deleted file mode 100644 index a499a94ac228..000000000000 --- a/third_party/git/Documentation/howto/using-merge-subtree.txt +++ /dev/null @@ -1,75 +0,0 @@ -Date: Sat, 5 Jan 2008 20:17:40 -0500 -From: Sean <seanlkml@sympatico.ca> -To: Miklos Vajna <vmiklos@frugalware.org> -Cc: git@vger.kernel.org -Subject: how to use git merge -s subtree? -Abstract: In this article, Sean demonstrates how one can use the subtree merge - strategy. -Content-type: text/asciidoc -Message-ID: <BAYC1-PASMTP12374B54BA370A1E1C6E78AE4E0@CEZ.ICE> - -How to use the subtree merge strategy -===================================== - -There are situations where you want to include contents in your project -from an independently developed project. You can just pull from the -other project as long as there are no conflicting paths. - -The problematic case is when there are conflicting files. Potential -candidates are Makefiles and other standard filenames. You could merge -these files but probably you do not want to. A better solution for this -problem can be to merge the project as its own subdirectory. This is not -supported by the 'recursive' merge strategy, so just pulling won't work. - -What you want is the 'subtree' merge strategy, which helps you in such a -situation. - -In this example, let's say you have the repository at `/path/to/B` (but -it can be a URL as well, if you want). You want to merge the 'master' -branch of that repository to the `dir-B` subdirectory in your current -branch. - -Here is the command sequence you need: - ----------------- -$ git remote add -f Bproject /path/to/B <1> -$ git merge -s ours --no-commit --allow-unrelated-histories Bproject/master <2> -$ git read-tree --prefix=dir-B/ -u Bproject/master <3> -$ git commit -m "Merge B project as our subdirectory" <4> - -$ git pull -s subtree Bproject master <5> ----------------- -<1> name the other project "Bproject", and fetch. -<2> prepare for the later step to record the result as a merge. -<3> read "master" branch of Bproject to the subdirectory "dir-B". -<4> record the merge result. -<5> maintain the result with subsequent merges using "subtree" - -The first four commands are used for the initial merge, while the last -one is to merge updates from 'B project'. - -Comparing 'subtree' merge with submodules ------------------------------------------ - -- The benefit of using subtree merge is that it requires less - administrative burden from the users of your repository. It works with - older (before Git v1.5.2) clients and you have the code right after - clone. - -- However if you use submodules then you can choose not to transfer the - submodule objects. This may be a problem with the subtree merge. - -- Also, in case you make changes to the other project, it is easier to - submit changes if you just use submodules. - -Additional tips ---------------- - -- If you made changes to the other project in your repository, they may - want to merge from your project. This is possible using subtree -- it - can shift up the paths in your tree and then they can merge only the - relevant parts of your tree. - -- Please note that if the other project merges from you, then it will - connect its history to yours, which can be something they don't want - to. |