save-excursion: Search failed: "^ remotes\\/origin" in branch manager

[mbunkus]

magit next, revision b84af7c

After adding a remote in a new repository the following error message is shown:

save-excursion: Search failed: "^  remotes\\/origin"

Also the branch display is then messed up slightly.

Steps to reproduce:

1. Create an empty repository.
2. Add a file. Commit.
3. Run magit on the repository.
4. Open the branch manager.
5. Hit 'a'. Enter a name, e.g. "origin". Enter the URL. The error is now shown.

The error is also shown whenever magit-status is executed from the branch manager in this state.

The error disappears as soon as I push something to the remote.

This looks like an issue if git has no information about remote branches yet -- or if there simply are no remote branches.

[hpdeifel]

The problem is in magit-wash-branches. It expects, that every remote
has at least one line in git remote -vva, but that isn't the case
if the remote has no branches (e.g if they haven't been fetched, yet).

[tarsius]

A fix has been merged, see #422.