[PATCH 2 of 2] log: drop hack to fix order of revset (issue5100)

[Yuya Nishihara]

# HG changeset patch
# User Yuya Nishihara <yuya at tcha.org>
# Date 1462253040 -32400
#      Tue May 03 14:24:00 2016 +0900
# Node ID f99625523f84eaaedf48897322d5c9f6dce64bd9
# Parent  961b53cbadd0e17b1e5e745d0e3cc582cbf6603f
# EXP-Topic revsetflag
log: drop hack to fix order of revset (issue5100)

Specify ordered=True instead.

This patch effectively backs out c407583cf5f6. revs.sort(reverse=True)
is replaced by revs.reverse() because the matcher should no longer reorder
revisions.

diff --git a/mercurial/cmdutil.py b/mercurial/cmdutil.py
--- a/mercurial/cmdutil.py
+++ b/mercurial/cmdutil.py
@@ -2189,19 +2189,10 @@ def getlogrevs(repo, pats, opts):
         # order, because most filters deal with the changelog.
         if not opts.get('rev'):
             revs.reverse()
-        matcher = revset.match(repo.ui, expr)
-        # Revset matches can reorder revisions. "A or B" typically returns
-        # returns the revision matching A then the revision matching B. Sort
-        # again to fix that.
-        fixopts = ['branch', 'only_branch', 'keyword', 'user']
-        oldrevs = revs
+        matcher = revset.match(repo.ui, expr, order=revset.followorder)
         revs = matcher(repo, revs)
         if not opts.get('rev'):
-            revs.sort(reverse=True)
-        elif len(pats) > 1 or any(len(opts.get(op, [])) > 1 for op in fixopts):
-            # XXX "A or B" is known to change the order; fix it by filtering
-            # matched set again (issue5100)
-            revs = oldrevs & revs
+            revs.reverse()
     if limit is not None:
         limitedrevs = []
         for idx, r in enumerate(revs):