manifest_xml: import `HEAD` and `R_HEADS` from correct module
version: import `HEAD` from correct module
`HEAD` and `R_HEADS` should be imported from the git_refs module,
where they are originally defined, rather than from the project
module.
repo: remove unused import of readline
cherry_pick: import standard modules on separate lines
smartsync: import subcmd modules explicitly from subcmd
Use:
`import re
import sys`
and
`from subcmds.sync import Sync`
Instead of:
`import sys, re`
and
`from sync import Sync`
Change-Id: Ie10dd6832710939634c4f5c86b9ba5a9cd6fc92e
If a client was created with "repo init --mirror" then there are
no working directories present, and no files checked out. Using
a command like "repo status" in this context makes no sense, and
actually throws back a Pytyon traceback at the console when the
underlying commands fail out.
We now tag commands with the MirrorSafeCommand type if they are
able to be executed within a mirror directory safely. Using a
command in a mirror which lacks this base class results in a
useful error letting you know the command isn't supported.
Bug: REPO-14
Signed-off-by: Shawn O. Pearce <sop@google.com>
