From: Jonathan Nieder <jrnieder@gmail.com>
Date: Sun, 12 Dec 2010 17:06:29 GMT
Subject: Re: [PATCH 13/10] vcs-svn: use mark from previous import for parent commit
Message-ID: <20101212170629.GA18847@burratino>
In-Reply-To: <11EEDD77-214C-44DB-AC7B-C1A086E35E4C@cordelta.com>

David Michael Barr wrote:

> Subject: [PATCH] vcs-svn: use mark from previous import for parent commit
[...]
> +++ b/vcs-svn/fast_export.c
> @@ -77,7 +77,7 @@ void fast_export_begin_commit(uint32_t revision, uint32_t
>                    log, gitsvnline);
>         if (!first_commit_done) {
>                 if (revision > 1)
> -                       printf("from refs/heads/master^0\n");
> +                       printf("from :%"PRIu32"\n", revision - 1);

This deals more sanely with attempts to continue an import starting at
the wrong revision.

Example: if I try

	import () {
		rm -f backflow
		mkfifo backflow

		svn-fe 3<backflow |
		git fast-import --cat-blob-fd=3 \
			--relative-marks \
			${1+--import-marks=svnrevs} \
			--export-marks=svnrevs \
			3>backflow
	}

	svnrdump -r0:100 $url | import
	svnrdump -r100:200 $url | import continue

then svn-fe should correctly re-import r100 the second time, instead
of trying to apply the same deltas twice.  If I try

	svnrdump -r0:100 $url | import
	svnrdump -r102:200 $url | import continue

then the second command should error out.

Thanks, queued.