#!/bin/sh -x

cat <<'EOF' > merge
#!/bin/sh
echo merging for `basename $1`
EOF
chmod +x merge

mkdir t
cd t
hg init
echo This is file a1 > a
hg add a
hg commit -t "commit #0" -d "0 0" -u user
echo This is file b1 > b
hg add b
hg commit -t "commit #1" -d "0 0" -u user

hg update 0
echo This is file c1 > c
hg add c
hg commit -t "commit #2" -d "0 0" -u user
echo This is file b1 > b
env HGMERGE=../merge hg update -m 1
# no merges expected
cd ..; /bin/rm -rf t

mkdir t
cd t
hg init
echo This is file a1 > a
hg add a
hg commit -t "commit #0" -d "0 0" -u user
echo This is file b1 > b
hg add b
hg commit -t "commit #1" -d "0 0" -u user

hg update 0
echo This is file c1 > c
hg add c
hg commit -t "commit #2" -d "0 0" -u user
echo This is file b2 > b
env HGMERGE=../merge hg update -m 1
# merge of b expected
cd ..; /bin/rm -rf t

mkdir t
cd t
hg init
echo This is file a1 > a
hg add a
hg commit -t "commit #0" -d "0 0" -u user
echo This is file b1 > b
hg add b
hg commit -t "commit #1" -d "0 0" -u user
echo This is file b22 > b
hg commit -t "commit #2" -d "0 0" -u user
hg update 1
echo This is file c1 > c
hg add c
hg commit -t "commit #3" -d "0 0" -u user
cat b
echo This is file b22 > b
env HGMERGE=../merge hg update -m 2
# merge expected!
cd ..; /bin/rm -rf t

mkdir t
cd t
hg init
echo This is file a1 > a
hg add a
hg commit -t "commit #0" -d "0 0" -u user
echo This is file b1 > b
hg add b
hg commit -t "commit #1" -d "0 0" -u user
echo This is file b22 > b
hg commit -t "commit #2" -d "0 0" -u user
hg update 1
echo This is file c1 > c
hg add c
hg commit -t "commit #3" -d "0 0" -u user
echo This is file b33 > b
env HGMERGE=../merge hg update -m 2
# merge of b expected
cd ..; /bin/rm -rf t