darcs-2.18.5: tests/issue1956.sh

## Test for issue1956

# copied almost verbatim from igloo's
# http://bugs.darcs.net/file1862/darcs_bug_with_touch.sh

. lib

rm -rf a
rm -rf b

mkdir a
cd a
darcs init --darcs-2
echo A > file
darcs add file
darcs rec -a -m A
cd ..

darcs get a b

cd a
echo BB > file
darcs rec -a -m B
cd ..

cd b
touch ts
echo R > file
touch file --reference=ts
darcs rec -a -m R
echo S > file
touch file --reference=ts
# darcs rec -a -m S
echo y| darcs pull ../a -ap B
cd ..