# HG changeset patch
# User Lucas Moscovicz <lmoscovicz@fb.com>
# Date 1394074187 28800
# Node ID 623ed0ed793e57723de6bb2f5351cfb3e2133ef5
# Parent  e07b1fd308057aee6c10bd164a78bd693ac7c8a7
cmdutil: changed walkchangerevs to use spanset instead of baseset

Using a spanset takes almost no memory at all. A baseset builds the entire
list in memory and is much slower for methods like __contains__.

diff -r e07b1fd30805 -r 623ed0ed793e mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Mon Feb 24 16:36:17 2014 -0800
+++ b/mercurial/cmdutil.py	Wed Mar 05 18:49:47 2014 -0800
@@ -1296,7 +1296,7 @@
     elif follow:
         revs = repo.revs('reverse(:.)')
     else:
-        revs = revset.baseset(repo)
+        revs = revset.spanset(repo)
         revs.reverse()
     if not revs:
         return []