git-url: work with tags

git-url

@@ -10,23 +10,28 @@ def oneliner(*args):
 
 commit = oneliner('git', 'rev-parse', 'HEAD')
 local_branch = oneliner('git', 'name-rev', '--name-only', 'HEAD')
-tracking_remote = oneliner('git', 'config', 'branch.%s.remote' % local_branch)
-tracking_branch = oneliner('git', 'config', 'branch.%s.merge' % local_branch)
-remote_url = oneliner('git', 'config', 'remote.%s.url' % tracking_remote)
-relpath = oneliner('git', 'rev-parse', '--show-prefix')[:-1]
 
-if tracking_branch.startswith('refs/heads/'):
-	tracking_branch = tracking_branch[len('refs/heads/'):]
+tag = None
+if local_branch.startswith('tags/'):
+	tag = local_branch[5:]
+	remote_url = oneliner('git', 'config', 'remote.origin.url')
 else:
-	raise Exception("can't handle " + tracking_branch)
+	tracking_branch = oneliner('git', 'config', 'branch.%s.merge' % local_branch)
+	if tracking_branch.startswith('refs/heads/'):
+		tracking_branch = tracking_branch[len('refs/heads/'):]
+	else:
+		raise Exception("can't handle " + tracking_branch)
+
+	tracking_remote = oneliner('git', 'config', 'branch.%s.remote' % local_branch)
+	remote_url = oneliner('git', 'config', 'remote.%s.url' % tracking_remote)
+
+relpath = oneliner('git', 'rev-parse', '--show-prefix')[:-1]
 
 remote_url = re.sub(r'^(.+@.+):(.+)$', r'ssh://\1/\2', remote_url)
 if remote_url.endswith('.git'):
 	remote_url = remote_url[:-len('.git')]
 parsed = urllib.parse.urlparse(remote_url)
 hostname = parsed.hostname
-if hostname == 'github.com-private':
-	hostname = 'github.com'
 
 obj_type = 'tree'
 if len(sys.argv) == 2:
@@ -43,5 +48,8 @@ def url_for(treeish):
   else:
     return dir_url
 
-print(url_for(tracking_branch))
+if tag is not None:
+	print(url_for(tag))
+else:
+	print(url_for(tracking_branch))
 print(url_for(commit))