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
# test children command
cat <<EOF >> $HGRCPATH
[extensions]
hgext.children=
EOF
echo "% init"
hg init t
cd t
echo "% no working directory"
hg children
echo % setup
echo 0 > file0
hg ci -qAm 0 -d '0 0'
echo 1 > file1
hg ci -qAm 1 -d '1 0'
echo 2 >> file0
hg ci -qAm 2 -d '2 0'
hg co null
echo 3 > file3
hg ci -qAm 3 -d '3 0'
echo "% hg children at revision 3 (tip)"
hg children
hg co null
echo "% hg children at nullrev (should be 0 and 3)"
hg children
hg co 1
echo "% hg children at revision 1 (should be 2)"
hg children
hg co 2
echo "% hg children at revision 2 (other head)"
hg children
for i in null 0 1 2 3; do
echo "% hg children -r $i"
hg children -r $i
done
echo "% hg children -r 0 file0 (should be 2)"
hg children -r 0 file0
echo "% hg children -r 1 file0 (should be 2)"
hg children -r 1 file0
hg co 0
echo "% hg children file0 at revision 0 (should be 2)"
hg children file0