On Tue, 11 Nov 2008 14:47:37 +0100 Miklos Vajna <[EMAIL PROTECTED]> wrote:
> On Tue, Nov 11, 2008 at 11:11:02AM +0100, Lele Gaifax > <[EMAIL PROTECTED]> wrote: > > Also, can you explain what you meant with "tailor replays all the > > changesets itself"? It would mean tailor reimplemented a superset of > > all the VCSs it handles, and that's suprising me :) > > I hope it's not something that hurts you, just fast-import has a > different approach. Surely not, on the countrary! 8-) Sorry if my tone was ambiguous. > You know that for example when there is a rename > like 'a' -> 'a/b' then tailor have to use ugly hacks (for example when > the target repo is darcs) to 1) first move a/b back to a, then 2) use > darcs mv to move it to a/b again. That's true when target is /not/ darcs (where tailor tries to be smart and write out the pending file directly). It does that when the target isn't able to grok with "after-the-fact operation", that is $ mv a b $ vcs mv a b > > With fast-import, this is not an issue, as all the darcs backend does > is to say "hey, a new patch is applied, here is the new result, take > this as a commit", and this is a copletely valid behaviour. The easy > part is that the importer will 1) just ignore the "file modification" > if the file is unchanged and 2) will automatically detect renames / > copies, so you don't have to care about it too much. Interesting but... does that cover corner cases like $ darcs mv a b $ darcs mv b c where older darcses (or other VCS didn't collapse) that into a single "mv a c"? Or $ svn mv a b $ touch a $ svn add a that is a "replacement" in svn parlance? > ... In fact it could be possible to add support to tailor > to converm from/to the fast-import format, I guess. ;) > > In general it's like: Let's say the one vcs is 'darcs', the other is > 'git. Then all you have to do is: > > cd repo.darcs; darcs-fast-export | ( cd repo.git; git fast-import) > > So there is a unified stream format and there can be importers and > exporters for various vcses. > > The documentation is here: > > http://www.kernel.org/pub/software/scm/git/docs/git-fast-import.html I see, thanks for the pointer. I really don't know if and when I'll be able to spend other time on tailor, but consider that noted :-) bye, lele. -- nickname: Lele Gaifax | Quando vivrò di quello che ho pensato ieri real: Emanuele Gaifas | comincerò ad aver paura di chi mi copia. [EMAIL PROTECTED] | -- Fortunato Depero, 1929. _______________________________________________ darcs-users mailing list [email protected] http://lists.osuosl.org/mailman/listinfo/darcs-users
