diff mercurial/revset.py @ 32798:573b792872c1

revset: fix order of last() n members where n > 1 (BC)

last() is implemented using a reversed iterator, so the result should be
reversed again.

I've marked this as BC since it's quite old bug seen in 3.0. The first bad
revision is 4849f574aa24 "revset: changed last implementation to use lazy
classes."

--- a/mercurial/revset.py	Sat Jun 10 20:14:23 2017 +0900
+++ b/mercurial/revset.py	Sat Jun 10 18:04:56 2017 +0900
@@ -1202,7 +1202,8 @@
             break
         elif y in subset:
             result.append(y)
-    return baseset(result, datarepr=('<last n=%d, %r, %r>', lim, subset, os))
+    return baseset(result[::-1], datarepr=('<last n=%d, %r, %r>',
+                                           lim, subset, os))
 
 @predicate('max(set)', safe=True)
 def maxrev(repo, subset, x):