On Tue, Jan 11, 2011 at 11:09 PM, NN Ott <nonot...@gmail.com> wrote: > > > On Tue, Jan 11, 2011 at 2:16 PM, Stefan Sperling <s...@elego.de> wrote: >> >> On Tue, Jan 11, 2011 at 01:36:37PM -0500, NN Ott wrote: >> > I just want the svn copy/log/diff/merge logic to see past, and account >> > for, >> > and svn:external barrier. Very much a one-way flow of changes. Imho, >> > doesn't seem too bizzare or non-svn like. >> >> It may seem like that on the surface. >> >> But an external is a nested checkout within another working copy. >> That's all there is to it. It is bound to the repository it came from. >> >> Creating diffs between two distinct Subversion repositories, for >> instance, is impossible to achieve with the current design of Subversion. >> If you try it, you get an error like this: >> svn: 'https://svn.example.com/repos1/README' isn't in the same repository >> as 'https://svn.example.com/repos2/README' >> >> Making this work would require redesign of the system. >> It's not an implementation bug that this doesn't work. >> It's something the design doesn't support, because Subversion is >> centralized. >> >> If you want to reason and argue about this you will need to understand >> technical details of the current design. So I'd suggest that you >> familiarize >> yourself with Subversion's design, and then rephrase your proposal in a >> way that explains how Subversion's current design would need to be >> changed in order to achieve what you want. >> >> Unfortunately it's not easy to summarize everything you need to know >> in one email. >> >> You'll need to understand how the repository filesystem works. >> A fairly good explanation is given here: >> >> https://svn.apache.org/repos/asf/subversion/trunk/subversion/libsvn_fs_base/notes/fs-history >> >> A good overview of how the client/server communication is currently >> structured is given here: >> http://www.red-bean.com/kfogel/beautiful-code/bc-chapter-02.html >> While linking to the above, it should also be noted that there is a new, >> currently unused, interface trying to address various shortcomings: >> >> https://svn.apache.org/repos/asf/subversion/trunk/subversion/include/svn_editor.h >> >> Stefan > > Thank you for explaining, Stefan. I'll check those links out. As you say, > my assumptions are based more on mis-understanding than anything else.
This discussion just triggered my memory: a while ago I read in a thread on the users list something about "foreign repository merges". Don't know if that's something that could be useful to you, but who knows ... See: http://svn.haxx.se/users/archive-2010-02/0223.shtml The thread concludes with "Don't tell anybody", so I'm not sure I'm supposed to do just that ;-). Cheers, -- Johan
