addremove/findrenames: find renames according to the match object (issue1527)

Instead of only finding similarities in the added/removed files found
by the addremove step, follow the match object:

hg addremove -s80 foo -> add and removes files in foo
                         + find similarities between files in foo
hg addremove -s80 -> add and removes files in the whole repo
                     + find similarities between files in the whole repo

hg import --similarity will still work correctly (only find similarities
between files found in the patch).

mercurial/cmdutil.py

@@ -252,10 +252,9 b' def matchall(repo):'
 def matchfiles(repo, files):
     return _match.exact(repo.root, repo.getcwd(), files)
 
-def findrenames(repo, added=None, removed=None, threshold=0.5):
+def findrenames(repo, match=None, threshold=0.5):
     '''find renamed files -- yields (before, after, score) tuples'''
-    if added is None or removed is None:
-        added, removed = repo.status()[1:3]
+    added, removed = repo.status(match=match)[1:3]
     ctx = repo['.']
     for a in added:
         aa = repo.wread(a)
@@ -310,7 +309,7 b' def addremove(repo, pats=[], opts={}, dr'
         repo.remove(remove)
         repo.add(add)
     if similarity > 0:
-        for old, new, score in findrenames(repo, add, remove, similarity):
+        for old, new, score in findrenames(repo, m, similarity):
             oldexact, newexact = m.exact(old), m.exact(new)
             if repo.ui.verbose or not oldexact or not newexact:
                 oldrel, newrel = m.rel(old), m.rel(new)

tests/test-addremove-similar

@@ -46,4 +46,22 b' hg addremove -s foo'
 hg addremove -s -1
 hg addremove -s 1e6
 
+cd ..
+
+echo '% issue 1527'
+hg init rep3; cd rep3
+mkdir d
+echo a > d/a
+hg add d/a
+hg commit -m 1
+
+mv d/a d/b
+hg addremove -s80
+hg debugstate
+mv d/b c
+echo "% no copies found here (since the target isn't in d"
+hg addremove -s80 d
+echo "% copies here"
+hg addremove -s80
+
 true

tests/test-addremove-similar.out

@@ -18,3 +18,15 b' recording removal of tiny-file as rename'
 abort: similarity must be a number
 abort: similarity must be between 0 and 100
 abort: similarity must be between 0 and 100
+% issue 1527
+removing d/a
+adding d/b
+recording removal of d/a as rename to d/b (100% similar)
+r   0          0 1970-01-01 00:00:00 d/a
+a   0         -1 unset               d/b
+copy: d/a -> d/b
+% no copies found here (since the target isn't in d
+removing d/b
+% copies here
+adding c
+recording removal of d/a as rename to c (100% similar)