diff -r 7fa3408f83ef -r aea29e81753a mercurial/commands.py
--- a/mercurial/commands.py	Sat May 26 11:33:02 2018 +0900
+++ b/mercurial/commands.py	Thu May 24 09:56:28 2018 +0000
@@ -4786,7 +4786,8 @@
     ('t', 'templates', '', _('web templates to use'), _('TEMPLATE')),
     ('', 'style', '', _('template style to use'), _('STYLE')),
     ('6', 'ipv6', None, _('use IPv6 in addition to IPv4')),
-    ('', 'certificate', '', _('SSL certificate file'), _('FILE'))]
+    ('', 'certificate', '', _('SSL certificate file'), _('FILE')),
+    ('', 'print-url', None, _('start and print only the URL'))]
      + subrepoopts,
     _('[OPTION]...'),
     optionalrepo=True)
@@ -4818,6 +4819,10 @@
     opts = pycompat.byteskwargs(opts)
     if opts["stdio"] and opts["cmdserver"]:
         raise error.Abort(_("cannot use --stdio with --cmdserver"))
+    if opts["print_url"] and ui.verbose:
+        raise error.Abort(_("cannot use --print-url with --verbose"))
+    if opts["print_url"]:
+        opts['daemon'] = True
 
     if opts["stdio"]:
         if repo is None: