[PATCH] [convert] With -d svn, recover gracefully from empty cset

[Jesse Glick]

Patrick Mézard wrote:
> Crazy, someone uses the svn sink.

Yes, well, until partial clones are implemented we have little choice for people who want to see one subdir out of a massive repo. :-(

>                  if not files:
> -                    return "nothing at 0";
> +                    return parents[0]

Sounds fine to me. I don't fully understood the extension code, was just trying to get it to pass over one weird changeset out of tens of thousands.

> it seems to work with my test.

Good. It did not occur to me that MQ could be used to create an empty changeset ('hg commit' refuses).

BTW there is a typo in the test: "emtpy"