# HG changeset patch
# User Matt Mackall <mpm@selenic.com>
# Date 2008-01-14 22:28:32
# Node ID c704b03884efd730e8e57f79099e32a783cc70d4
# Parent  85888efbdfff94d349d0df9331e8c0a1715b4f60

merge: add a bit more sanity to divergent copy checks

diff --git a/mercurial/merge.py b/mercurial/merge.py
--- a/mercurial/merge.py
+++ b/mercurial/merge.py
@@ -210,21 +210,23 @@ def findcopies(repo, m1, m2, ma, limit):
     for f in u2:
         checkcopies(ctx(f, m2[f]), m1, ma)
 
-    d2 = {}
+    diverge2 = {}
     for of, fl in diverge.items():
-        for f in fl:
-            fo = list(fl)
-            fo.remove(f)
-            d2[f] = (of, fo)
+        if len(fl) == 1:
+            del diverge[of] # not actually divergent
+        else:
+            diverge2.update(dict.fromkeys(fl)) # reverse map for below
 
     if fullcopy:
         repo.ui.debug(_("  all copies found (* = to merge, ! = divergent):\n"))
         for f in fullcopy:
             note = ""
             if f in copy: note += "*"
-            if f in diverge: note += "!"
+            if f in diverge2: note += "!"
             repo.ui.debug(_("   %s -> %s %s\n") % (f, fullcopy[f], note))
 
+    del diverge2
+
     if not fullcopy or not repo.ui.configbool("merge", "followdirs", True):
         return copy, diverge
 
diff --git a/tests/test-rename-merge1.out b/tests/test-rename-merge1.out
--- a/tests/test-rename-merge1.out
+++ b/tests/test-rename-merge1.out
@@ -11,9 +11,9 @@ resolving manifests
    b
    b2
   all copies found (* = to merge, ! = divergent):
-   c2 -> a2 
+   c2 -> a2 !
    b -> a *
-   b2 -> a2 
+   b2 -> a2 !
   checking for directory renames
  a2: divergent renames -> dr
  a: remote moved to b -> m
diff --git a/tests/test-rename-merge2.out b/tests/test-rename-merge2.out
--- a/tests/test-rename-merge2.out
+++ b/tests/test-rename-merge2.out
@@ -228,8 +228,8 @@ resolving manifests
   unmatched files in other:
    c
   all copies found (* = to merge, ! = divergent):
-   c -> a 
-   b -> a 
+   c -> a !
+   b -> a !
   checking for directory renames
  a: divergent renames -> dr
  rev: versions differ -> m