# HG changeset patch
# User Patrick Mezard <pmezard@gmail.com>
# Date 1208205093 -7200
# Node ID dfdef3d560a849910938f8cc10b8a82784c05604
# Parent  93e140dbcd448c3e4646c84931747fe05d41980e
cmdutil: handle and warn about missing copy revisions

diff -r 93e140dbcd44 -r dfdef3d560a8 mercurial/cmdutil.py
--- a/mercurial/cmdutil.py	Mon Apr 14 22:31:33 2008 +0200
+++ b/mercurial/cmdutil.py	Mon Apr 14 22:31:33 2008 +0200
@@ -1018,11 +1018,16 @@
         minrev, maxrev = min(revs), max(revs)
         for file_, node in iterfiles():
             filelog = repo.file(file_)
-            # A zero count may be a directory or deleted file, so
-            # try to find matching entries on the slow path.
             if filelog.count() == 0:
-                slowpath = True
-                break
+                if node is None:
+                    # A zero count may be a directory or deleted file, so
+                    # try to find matching entries on the slow path.
+                    slowpath = True
+                    break
+                else:
+                    ui.warn(_('%s:%s copy source revision cannot be found!\n') 
+                            % (file_, short(node)))
+                    continue
             for rev, copied in filerevgen(filelog, node):
                 if rev <= maxrev:
                     if rev < minrev: