--- a/hgext/schemes.py	Fri Jan 29 14:40:41 2016 -0500
+++ b/hgext/schemes.py	Fri Jan 29 14:53:44 2016 -0500
@@ -41,9 +41,11 @@
 """
 
 import os, re
-from mercurial import extensions, hg, templater, util, error
+from mercurial import extensions, hg, templater, util, error, cmdutil
 from mercurial.i18n import _
 
+cmdtable = {}
+command = cmdutil.command(cmdtable)
 # Note for extension authors: ONLY specify testedwith = 'internal' for
 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
 # be specifying the version(s) of Mercurial they are tested with, or
@@ -109,3 +111,12 @@
         hg.schemes[scheme] = ShortRepository(url, scheme, t)
 
     extensions.wrapfunction(util, 'hasdriveletter', hasdriveletter)
+
+@command('debugexpandscheme', norepo=True)
+def expandscheme(ui, url, **opts):
+    """given a repo path, provide the scheme-expanded path
+    """
+    repo = hg._peerlookup(url)
+    if isinstance(repo, ShortRepository):
+        url = repo.resolve(url)
+    ui.write(url + '\n')