On Sunday 19 August 2012 23:57:23 Junio C Hamano wrote:
> Florian Achleitner <florian.achleitner.2.6...@gmail.com> writes:
> >> This change makes me uncomfortable.
> >> We are doubling up on hashing with fast-import.
> >> This introduces git-specific logic into vcs-svn.
> IIUC, vcs-svn/fast-export is meant to produce a stream in the
> fast-import format, and that format is meant to be VCS agnostic,
> it would need a careful thinking to add anything Git specific to
> it.  If you make other people's importers unable to read from you
> because you tell them the contents of blob in Git's terms, that is
> not very good.

Good point.

> > You have two choices of referencing that blobs later, by using a mark, or
> > by giving their sha1. Marks are already used for marking commits, and
> > there is only one "mark namespace". So I couldn't use marks to reference
> > the blobs in a nice way. This allows for referencing them by their sha1.
> Surely you can, by using even and odd numbers (or modulo 4 if you
> may later want to mark trees and tags as well, but I doubt that is
> needed), no?

Currently, the mark number is equal to the svn revision number the commit 
corresponds to. I didn't want to break that, but not mandatory. We could also 
split the mark namespace by reserving one or more of the most significant bits 
as a type specifier. 
I'll develop a marks-based version ..

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