tree 526a877b54a070746b7a0ae8b5657baa9e7aed0e
parent 2675c3f8b5865edff4fe6ec60187b32deef5041d
author Shawn O. Pearce <sop@google.com> 1239405678 -0700
committer Shawn O. Pearce <sop@google.com> 1239405678 -0700

Make 'repo start' restartable upon failures

If `repo start foo` fails due to uncommitted and unmergeable changes
in a single project, we have switched half of the projects over to
the new target branches, but didn't on the one that failed to move.

This change improves the situation by doing three things differently:

- We keep going when we encounter an error, so other projects
  that can successfully switch still switch.

- We ignore projects whose current branch is already on the
  requested name; they are logically already setup.

- We checkout the branch if it already exists, rather than
  trying to recreate the branch.

Bug: REPO-22
Signed-off-by: Shawn O. Pearce <sop@google.com>