# HG changeset patch
# User Martijn Pieters <mjpieters@fb.com>
# Date 1465399123 -3600
# Node ID 631617262e556fb1e868f807077f6261c36def36
# Parent  ecc9b788fd690a0ae1d4905186cc3cb4035aad5e
graphmod: avoid sorting when already sorted

This is somewhat redundant now, but allows us to add a toposort that should not
be re-sorted either.

diff -r ecc9b788fd69 -r 631617262e55 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Tue Jun 07 20:29:54 2016 -0700
+++ b/mercurial/cmdutil.py	Wed Jun 08 16:18:43 2016 +0100
@@ -2147,7 +2147,8 @@
     if opts.get('rev'):
         # User-specified revs might be unsorted, but don't sort before
         # _makelogrevset because it might depend on the order of revs
-        revs.sort(reverse=True)
+        if not revs.isdescending():
+            revs.sort(reverse=True)
     if expr:
         # Revset matchers often operate faster on revisions in changelog
         # order, because most filters deal with the changelog.