#!/bin/sh

commit()

{

    msg=$1

    p1=$2

    p2=$3

    if [ "$p1" ]; then

	hg up -qC $p1

    fi

    if [ "$p2" ]; then

	HGMERGE=true hg merge -q $p2

    fi

    echo >> foo

    hg commit -d '0 0' -qAm "$msg" foo

}

hg init repo

cd repo

echo '[extensions]' > .hg/hgrc

echo 'hgext.parentrevspec =' >> .hg/hgrc

commit '0: add foo'

commit '1: change foo 1'

commit '2: change foo 2a'

commit '3: change foo 3a'

commit '4: change foo 2b' 1

commit '5: merge' 3 4

commit '6: change foo again'

hg log --template '#rev#:#node|short# #parents#\n'

echo

lookup()

{

    for rev in "$@"; do

	printf "$rev: "

	hg id -nr $rev

    done

    true

}

tipnode=`hg id -ir tip`

echo 'should work with tag/branch/node/rev'

for r in tip default $tipnode 6; do

    lookup $r^

done

echo

echo 'some random lookups'

lookup 6^^ 6^^^ 6^^^^ 6^^^^^ 6^^^^^^ 6^1 6^2 6^^2 6^1^2 6^^3

lookup 6~ 6~1 6~2 6~3 6~4 6~5 6~42 6~1^2 6~1^2~2

echo

echo 'with a tag "6^" pointing to rev 1'

hg tag -l -r 1 6^

lookup 6^ 6^1 6~1 6^^

echo

echo 'with a tag "foo^bar" pointing to rev 2'

hg tag -l -r 2 foo^bar

lookup foo^bar foo^bar^