#!/bin/sh

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

echo % 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

# This is a cleaner patch generated via diff

# In this case it reproduces the problem when

# the output of hg export does not

echo % 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

echo % 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