# HG changeset patch
# User Martin von Zweigbergk <martinvonz@google.com>
# Date 2019-02-01 00:51:52
# Node ID a5d8824483ba3b277fc5ccb3c5571e0963bb6c3e
# Parent  a02c8b605d3136faf0d3f5601eb718901b4075f5

diff: drop duplicate filter of copies by destination

I'm pretty sure we don't need to filter copies by destination, at
least since the previous patch.

Differential Revision: https://phab.mercurial-scm.org/D5790

diff --git a/mercurial/patch.py b/mercurial/patch.py
--- a/mercurial/patch.py
+++ b/mercurial/patch.py
@@ -2343,10 +2343,10 @@ def diffhunks(repo, node1=None, node2=No
             copy = copies.pathcopies(ctx1, ctx2, match=match)
 
     if relroot:
-        # filter out copies where either side isn't inside the relative root
-        copy = dict(((dst, src) for (dst, src) in copy.iteritems()
-                     if dst.startswith(relroot)
-                     and src.startswith(relroot)))
+        # filter out copies where source side isn't inside the relative root
+        # (copies.pathcopies() already filtered out the destination)
+        copy = {dst: src for dst, src in copy.iteritems()
+                if src.startswith(relroot)}
 
     modifiedset = set(modified)
     addedset = set(added)