#!/bin/sh

heads()

{

    hg heads --template '{rev}: {desc|firstline|strip}\n' "$@"

}

hg init a

cd a

echo 'root' >root

hg add root

hg commit -m "Adding root node"

heads

echo '-------'

heads .

echo '======='

echo 'a' >a

hg add a

hg branch a

hg commit -m "Adding a branch"

heads

echo '-------'

heads .

echo '======='

hg update -C 0

echo 'b' >b

hg add b

hg branch b

hg commit -m "Adding b branch"

heads

echo '-------'

heads .

echo '======='

echo 'bh1' >bh1

hg add bh1

hg commit -m "Adding b branch head 1"

heads

echo '-------'

heads .

echo '======='

hg update -C 2

echo 'bh2' >bh2

hg add bh2

hg commit -m "Adding b branch head 2"

heads

echo '-------'

heads .

echo '======='

hg update -C 2

echo 'bh3' >bh3

hg add bh3

hg commit -m "Adding b branch head 3"

heads

echo '-------'

heads .

echo '======='

hg merge 4

hg commit -m "Merging b branch head 2 and b branch head 3"

heads

echo '-------'

heads .

echo '======='

echo 'c' >c

hg add c

hg branch c

hg commit -m "Adding c branch"

heads

echo '-------'

heads .

echo '======='

heads -r 3 .

echo $?

echo '-------'

heads -r 2 .

echo $?

echo '-------'

hg update -C 4

echo $?

echo '-------'

heads -r 3 .

echo $?

echo '-------'

heads -r 2 .

echo $?

echo '-------'

heads -r 7 .

echo $?

echo '======='

for i in 0 1 2 3 4 5 6 7; do

    hg update -C "$i"

    heads

    echo '-------'

    heads .

    echo '-------'

done

echo '======='

for i in a b c z; do

    heads "$i"

    echo '-------'

done

echo '======='

heads 0 1 2 3 4 5 6 7