# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1475320308 -32400
# Node ID 49d5434d68fbc291b29d39f4c2d86e60b220c026
# Parent  d24e03da24b52618f94005928970dde901f44e56
revset: extract function that creates range set from computed revisions

So we can pass m=0 to _makerangeset() even if the revision 0 is hidden.
Hidden revisions are filtered by spanset.

diff -r d24e03da24b5 -r 49d5434d68fb mercurial/revset.py
--- a/mercurial/revset.py	Mon Sep 12 13:37:14 2016 +0200
+++ b/mercurial/revset.py	Sat Oct 01 20:11:48 2016 +0900
@@ -366,8 +366,9 @@
 
     if not m or not n:
         return baseset()
-    m, n = m.first(), n.last()
-
+    return _makerangeset(repo, subset, m.first(), n.last(), order)
+
+def _makerangeset(repo, subset, m, n, order):
     if m == n:
         r = baseset([m])
     elif n == node.wdirrev: