What is branched in a repository?

Posted by Peter M on Stack Overflow See other posts from Stack Overflow or by Peter M
Published on 2010-05-27T13:03:16Z Indexed on 2010/05/27 13:21 UTC
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svn

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git

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bazaar

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hg

Ok I hope that this will end up sounding like a reasonable question.

From what I understand of subversion if you have a repo that contains multiple projects, then you can branch individual projects within that repo (see SVN Red book - Using Branches)

However what I don't quite follow is what happens when you create a branch in one of the distributed systems (Git, Hg, Bazaar - I don't think it matters which one). Can you branch just a sub-directory of the repo, or when you create the branch are you branching the entire repo?

This question is part of a larger one that I posted on superuser (choice and setup of version control) and has come about as I am trying to figure out how to best version control a large hierarchal layout of independent projects.

It may be that for distributed systems that what I would like to do is best handled by a sub-project mechanism of some sort - but again that is something I am not clear on although I have heard the term mentioned in regards to git.

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