rename: make --after work if source is already in R state

I routinely want to use `hg addrem` and then fix up missed renames
manually using `hg mv -A`. This patch allows me to record such
renames from a source in state R to a target in state A.

mercurial/cmdutil.py

@@ -351,12 +351,13 b' def copy(ui, repo, pats, opts, rename=Fa'
 
     def walkpat(pat):
         srcs = []
+        badstates = after and '?' or '?r'
         m = match(repo, [pat], opts, globbed=True)
         for abs in repo.walk(m):
             state = repo.dirstate[abs]
             rel = m.rel(abs)
             exact = m.exact(abs)
-            if state in '?r':
+            if state in badstates:
                 if exact and state == '?':
                     ui.warn(_('%s: not copying - file is not managed\n') % rel)
                 if exact and state == 'r':

tests/test-rename

@@ -23,6 +23,14 b' hg status -C'
 hg update -C
 rm d2/c
 
+echo '# rename --after a single file when src and tgt already tracked'
+mv d1/d11/a1 d2/c
+hg addrem
+hg rename --after d1/d11/a1 d2/c
+hg status -C
+hg update -C
+rm d2/c
+
 echo "# rename --after a single file to a nonexistant target filename"
 hg rename --after d1/a dummy
 

tests/test-rename.out

@@ -8,6 +8,13 b' A d2/c'
   d1/d11/a1
 R d1/d11/a1
 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
+# rename --after a single file when src and tgt already tracked
+removing d1/d11/a1
+adding d2/c
+A d2/c
+  d1/d11/a1
+R d1/d11/a1
+1 files updated, 0 files merged, 0 files removed, 0 files unresolved
 # rename --after a single file to a nonexistant target filename
 d1/a: not recording move - dummy does not exist
 # move a single file to an existing directory