view tests/test-parentrevspec @ 6144:08e0825b8106

revlog.revision: avoid opening the datafile without need.

If there's no inline data, revlog.revision opens the data file every
time it's called.  This is useful if we're going to call chunk many
times, but, if we're going to call it only once, it's better to let
chunk open the file - if we're lucky, all the data we're going to need
is already cached and we won't need to even look at the file.

#!/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^"