Don't expand empty [paths] so later interpolation can do the right thing.
Example:
[paths]
default =
default-push = %(default)s
--- a/mercurial/ui.py Sun Mar 12 20:23:05 2006 +0100
+++ b/mercurial/ui.py Sun Mar 12 20:34:09 2006 +0100
@@ -60,7 +60,7 @@
if root is None:
root = os.path.expanduser('~')
for name, path in self.configitems("paths"):
- if path.find("://") == -1 and not os.path.isabs(path):
+ if path and path.find("://") == -1 and not os.path.isabs(path):
self.cdata.set("paths", name, os.path.join(root, path))
def setconfig(self, section, name, val):