bug#22032: 24.3; VC doesn't handle hg hidden revisions

[Dmitry Gutov]

On 12/13/2015 12:54 PM, Glenn Hutchings wrote:
> if a repository has any
> changesets that are marked 'obsolete', and any mercurial command is
> issued by a user who hasn't enabled the extension, a warning message is
> printed to stderr:
>
>     obsolete feature not enabled but <N> markers found!

That's a pretty unhelpful message. Does it also happen if you remove the 
"--hidden" flag from the proposed definition?

Actually, do we even need the "not hidden()" check in the spec, if the 
command is called without "--hidden"?

> Looking at mercurial sources, there's no way to suppress this warning.
> I guess one workaround would be to have vc-hg-command skip over it if
> it's there.

I think we'd rather avoid applying the patch until the extension becomes 
standard.