Add a -r option to hg svn. Use with hg svn info to change the mercurial rev.

hgsubversion/__init__.py

@@ -168,6 +168,7 @@ cmdtable = {
           ('', 'force', False, 'force an operation to happen'),
           ('', 'username', '', 'username for authentication'),
           ('', 'password', '', 'password for authentication'),
+          ('r', 'rev', '', 'Mercurial revision'),
           ],
          svncommands._helpgen(),
          ),

hgsubversion/utility_commands.py

@@ -36,7 +36,12 @@ def info(ui, repo, hg_repo_path, **opts):
     """
     meta = repo.svnmeta()
     hashes = meta.revmap.hashes()
-    parent = util.parentrev(ui, repo, meta, hashes)
+
+    if opts.get('rev'):
+        parent = repo[opts['rev']]
+    else:
+        parent = util.parentrev(ui, repo, meta, hashes)
+
     pn = parent.node()
     if pn not in hashes:
         ui.status('Not a child of an svn revision.\n')

tests/test_utility_commands.py

@@ -54,6 +54,17 @@ class UtilityTests(test_util.TestBase):
                      'rev': 6,
                      })
         self.assertEqual(actual, expected)
+        hg.update(self.repo, 'default')
+        u.pushbuffer()
+        utility_commands.info(u, self.repo, self.wc_path, rev=3)
+        actual = u.popbuffer()
+        expected = (expected_info_output %
+                    {'date': '2008-10-08 01:39:05 +0000 (Wed, 08 Oct 2008)',
+                     'repourl': self.repourl,
+                     'branch': 'branches/the_branch',
+                     'rev': 5,
+                     })
+        self.assertEqual(actual, expected)
 
     def test_parent_output(self):
         self._load_fixture_and_fetch('two_heads.svndump')