Here is the problem:

====================
:~/tmp/darcs> mkdir two\ words
:~/tmp/darcs> cd two\ words/
:~/tmp/darcs/two words> darcs init
:~/tmp/darcs/two words> cd ..
:~/tmp/darcs> darcs get "localhost:tmp/darcs/two words"
Invalid repository:  localhost:tmp/darcs/two words

darcs failed:  (scp) failed to fetch: localhost:tmp/darcs/two words/_darcs/inventory
====================

Here is how I solved it for myself (a darcs patch):

===================
{
hunk ./External.hs 188
+                 tr ' ' = "\\ "
}
===================

I imagine that copySSHs might also need some change.

Any chance you could darcs send a patch to
http://www.abridgegame.org/repos/darcs-stable/

(I'd say stable, as this seems innocuous enough a fix)

ok, did it. Though I can't be quite sure that it is correct or that it is enough :)

Hi,

On Sat, May 12, 2007 at 00:10:41 +0000, Misha Aizatulin wrote:
> ok, did it. Though I can't be quite sure that it is correct or that it is enough :)

For what it's worth, I haven't received anything from the mailing list.
Could you double-check?  The darcs send should result in a mail to the
darcs-devel@darcs.net list

Or if that doesn't work, maybe attach a darcs patch to the tracker by
sending it as an attachment.

Sorry to make you jump through hoops!  Just think of it as your first
contribution to the darcs community (pending review, of course).

well, I guess the problem was that my postfix wasn't set up and running :) I
tried it once more, hope it arrives now.

Just wanted to note that we had applied this patch in stable, but then decided
to roll it back, because it wasn't worth the risk.  

I'd recommend that a revised patch which covers both the scp and sftp be submitted.

See message <20070530191915.GB217@dewdrop.local> on darcs-devel, or
http://thread.gmane.org/gmane.comp.version-control.darcs.devel/5830

It sounds like there is still uncertainty here about why this fails and if is
something we should even be addressing or whether it is "not-our-bug".

There was a patch for this, but it only handled the case for scp.  This seems
like it's worth fixing.  We just need the sftp case covered as well.

First: We need somebody to test if darcs transfer-mode suffers from the same
problem and to write a regression test.

Second: We need somebody to revisit Misha's patch and re-do it for scp and sftp
both.  It'll probably only matter for the case where the remote end does not
have a darcs 2 client.

Thu May 24 01:42:32 CEST 2007  Misha Aizatulin <avatar@hot.ee>
  * fix scp whitespace

The problem still exists in 2.5.2:

===========
$ darcs push --remote-darcs=/user/mihai/bin/darcs
'--remote-repo=remotemachine:projects/app\ f/trunk' 
Pushing to "remotemachine:projects/app\\ f/trunk"...
Mon Oct 17 13:37:43 EDT 2011  mihai@...
  * Entered a random change to test darcs.
Shall I push this patch? (1/1)  [ynW...], or ? for more options: y

darcs failed:  can't set directory to projects/app\ f/trunk
Apply failed!
===========

Both the local and the remote darcs binaries are at version 2.5.2 (release).

Thanks for the follow-up. What OS and shell versions were involved in
your test?

   Mark

Remote machine:
Red Hat Enterprise Linux Server release 5.3 x86_64
GNU bash 3.2.25

Local machine:
Ubuntu 11.04 x86_64
GNU bash 4.2.8