revlog: fix revlogio.packentry corner case
We want to store version information about the revlog in the first
entry of its index. The code in packentry was using some heuristics
to detect whether this was the first entry, but these heuristics could
fail in some cases (e.g. rev 0 was empty; rev 1 descends directly from
the nullid and is stored as a delta).
We now give the revision number to packentry to avoid heuristics.
#!/bin/sh
"$TESTDIR/hghave" symlink || exit 80
origdir=`pwd`
cat >> readlink.py <<EOF
import os
import sys
for f in sys.argv[1:]:
print f, '->', os.readlink(f)
EOF
hg init repo
cd repo
ln -s nothing dangling
hg ci -qAm 'add symlink'
hg archive -t files ../archive
hg archive -t tar -p tar ../archive.tar
hg archive -t zip -p zip ../archive.zip
echo '% files'
cd "$origdir"
cd archive
python ../readlink.py dangling
echo '% tar'
cd "$origdir"
tar xf archive.tar
cd tar
python ../readlink.py dangling
echo '% zip'
cd "$origdir"
unzip archive.zip > /dev/null
cd zip
python ../readlink.py dangling