revision spec for directly referring to svn changeset numbers

[nicholas a. evans]

It would be very useful to have a revision spec for directly referring to svn changeset numbers.

For example: "svn:29742" could be translated to
revision-id:svn-v3-trunk1:0487d25d-142b-0410-8fcf-b82ac621bf97:foobarproject%2Ftrunk:29742
anywhere that revision specs are used.

[nicholas a. evans (nevans)]

along with this, it would be very useful to have a --show-svn-ids option for bzr log.

[Jelmer Vernooij (jelmer)]

Doing the latter would be a bit harder, and would require changes to core bzr.

[Jelmer Vernooij (jelmer)]

Simple implemtation (svn:revno) now supported . This only works on the bzr branch itself, not on any Bazaar copies created from it - supporting the latter would require a bzr-svn mapping bump.

[nicholas a. evans (nevans)]

I'm getting an error with this when I use it from within my bzr checkout. Is there some way of knowing whether or not my bzr branch is the "branch itself" or a "copy created from it"? (I'm not sure that I understand the distinction anyway.)

~/src/mdlogix/imrs/trunk $ bzr info | grep 'checkout of'
        checkout of branch: svn+https://svn.mycompany.com/projectname/trunk
~/src/projectname/trunk $ bzr log -r 2012 --show-ids --short | head -2
 2012 mdotterer 2007-11-13
      revision-id:svn-v3-trunk1:0487d25d-142b-0410-8fcf-b82ac621bf97:imrs%2Ftrunk:30780
~/src/projectname/trunk $ bzr log -r svn:30780
bzr: ERROR: exceptions.AttributeError: 'BzrBranch6' object has no attribute 'generate_revision_id'

Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 802, in run_bzr_catch_errors
    return run_bzr(argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 758, in run_bzr
    ret = run(*run_argv)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 492, in run_argv_aliases
    return self.run(**all_cmd_args)
  File "/usr/lib/python2.5/site-packages/bzrlib/commands.py", line 768, in ignore_pipe
    result = func(*args, **kwargs)
  File "/usr/lib/python2.5/site-packages/bzrlib/builtins.py", line 1702, in run
    rev1 = rev2 = revision[0].in_history(b)
  File "/usr/lib/python2.5/site-packages/bzrlib/revisionspec.py", line 225, in in_history
    return self._match_on_and_check(branch, revs)
  File "/usr/lib/python2.5/site-packages/bzrlib/revisionspec.py", line 207, in _match_on_and_check
    info = self._match_on(branch, revs)
  File "/home/nevans/.bazaar/plugins/svn/revspec.py", line 29, in _match_on
    return RevisionInfo.from_revision_id(branch, branch.generate_revision_id(int(self.spec[loc+1:])), branch.revision_history())
AttributeError: 'BzrBranch6' object has no attribute 'generate_revision_id'

bzr 0.92.0.candidate.1 on python 2.5.1.final.0 (linux2)
arguments: ['/usr/bin/bzr', 'log', '-r', 'svn:30780']
encoding: 'UTF-8', fsenc: 'UTF-8', lang: 'en_US.UTF-8'
plugins:
  bzrtools /usr/lib/python2.5/site-packages/bzrlib/plugins/bzrtools [0.92.0]
  gtk /home/nevans/.bazaar/plugins/gtk [0.93.0dev0]
  launchpad /usr/lib/python2.5/site-packages/bzrlib/plugins/launchpad [unknown]
  multiparent /usr/lib/python2.5/site-packages/bzrlib/plugins/multiparent.pyc [unknown]
  rebase /home/nevans/.bazaar/plugins/rebase [0.3.0dev0]
  svn /home/nevans/.bazaar/plugins/svn [0.4.5dev0]
  vimdiff /home/nevans/.bazaar/plugins/vimdiff [unknown]

** Please send this report to <email address hidden>
   with a description of what you were doing when the
   error occurred.

Thanks!

[Jelmer Vernooij (jelmer)]

You can only use this on a Subversion branch, I'm afraid. A copy of a
Subversion branch doesn't contain the necessary information - and may
contain revisions from more than one Subversion repository, thus making
"svn:X" ambiguous.

This can be fixed, but would require a version bump of the bzr-svn mappings,
and so won't happen at least until 0.5.