# HG changeset patch
# User Martijn Pieters <mjpieters@fb.com>
# Date 2016-06-08 15:18:43
# 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 --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -2147,7 +2147,8 @@ def getgraphlogrevs(repo, pats, opts):
     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.