--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/test-patch-offset.t	Sun Sep 26 13:44:49 2010 -0500
@@ -0,0 +1,76 @@
+
+  $ cat > writepatterns.py <<EOF
+  > import sys
+  > 
+  > path = sys.argv[1]
+  > patterns = sys.argv[2:]
+  > 
+  > fp = file(path, 'wb')
+  > for pattern in patterns:
+  >     count = int(pattern[0:-1])
+  >     char = pattern[-1] + '\n'
+  >     fp.write(char*count)
+  > fp.close()
+  > EOF
+
+prepare repo
+
+  $ hg init a
+  $ cd a
+
+These initial lines of Xs were not in the original file used to generate
+the patch.  So all the patch hunks need to be applied to a constant offset
+within this file.  If the offset isn't tracked then the hunks can be
+applied to the wrong lines of this file.
+
+  $ python ../writepatterns.py a 34X 10A 1B 10A 1C 10A 1B 10A 1D 10A 1B 10A 1E 10A 1B 10A
+  $ hg commit -Am adda
+  adding a
+
+This is a cleaner patch generated via diff
+In this case it reproduces the problem when
+the output of hg export does not
+import patch
+
+  $ hg import -v -m 'b' -d '2 0' - <<EOF
+  > --- a/a	2009-12-08 19:26:17.000000000 -0800
+  > +++ b/a	2009-12-08 19:26:17.000000000 -0800
+  > @@ -9,7 +9,7 @@
+  >  A
+  >  A
+  >  B
+  > -A
+  > +a
+  >  A
+  >  A
+  >  A
+  > @@ -53,7 +53,7 @@
+  >  A
+  >  A
+  >  B
+  > -A
+  > +a
+  >  A
+  >  A
+  >  A
+  > @@ -75,7 +75,7 @@
+  >  A
+  >  A
+  >  B
+  > -A
+  > +a
+  >  A
+  >  A
+  >  A
+  > EOF
+  applying patch from stdin
+  patching file a
+  Hunk #1 succeeded at 43 (offset 34 lines).
+  Hunk #2 succeeded at 87 (offset 34 lines).
+  Hunk #3 succeeded at 109 (offset 34 lines).
+  a
+
+compare imported changes against reference file
+
+  $ python ../writepatterns.py aref 34X 10A 1B 1a 9A 1C 10A 1B 10A 1D 10A 1B 1a 9A 1E 10A 1B 1a 9A
+  $ diff aref a