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mercurial/patch.py
changeset 30078 173bdb502503
parent 29948 e40343ce9c4c
child 30397 564b33acc21f 
--- a/mercurial/patch.py	Sat Oct 08 08:54:05 2016 -0700
+++ b/mercurial/patch.py	Sat Oct 08 05:26:58 2016 -0700
@@ -1952,8 +1952,10 @@
                 data, mode = None, None
                 if gp.op in ('RENAME', 'COPY'):
                     data, mode = store.getfile(gp.oldpath)[:2]
-                    # FIXME: failing getfile has never been handled here
-                    assert data is not None
+                    if data is None:
+                        # This means that the old path does not exist
+                        raise PatchError(_("source file '%s' does not exist")
+                                           % gp.oldpath)
                 if gp.mode:
                     mode = gp.mode
                     if gp.op == 'ADD':
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