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
hg init a
mkdir a/d1
mkdir a/d1/d2
echo line 1 > a/a
echo line 1 > a/d1/d2/a
hg --cwd a ci -d '0 0' -Ama
echo line 2 >> a/a
hg --cwd a ci -u someone -d '1 0' -m'second change'
echo % import exported patch
hg clone -r0 a b
hg --cwd a export tip > tip.patch
hg --cwd b import ../tip.patch
echo % message should be same
hg --cwd b tip | grep 'second change'
echo % committer should be same
hg --cwd b tip | grep someone
rm -r b
echo % import of plain diff should fail without message
hg clone -r0 a b
hg --cwd a diff -r0:1 > tip.patch
hg --cwd b import ../tip.patch
rm -r b
echo % import of plain diff should be ok with message
hg clone -r0 a b
hg --cwd a diff -r0:1 > tip.patch
hg --cwd b import -mpatch ../tip.patch
rm -r b
echo % hg -R repo import
# put the clone in a subdir - having a directory named "a"
# used to hide a bug.
mkdir dir
hg clone -r0 a dir/b
hg --cwd a export tip > dir/tip.patch
cd dir
hg -R b import tip.patch
cd ..
rm -r dir
echo % import from stdin
hg clone -r0 a b
hg --cwd a export tip | hg --cwd b import -
rm -r b
echo % override commit message
hg clone -r0 a b
hg --cwd a export tip | hg --cwd b import -m 'override' -
hg --cwd b tip | grep override
rm -r b
cat > mkmsg.py <<EOF
import email.Message, sys
msg = email.Message.Message()
msg.set_payload('email commit message\n' + open('tip.patch').read())
msg['Subject'] = 'email patch'
msg['From'] = 'email patcher'
sys.stdout.write(msg.as_string())
EOF
echo % plain diff in email, subject, message body
hg clone -r0 a b
hg --cwd a diff -r0:1 > tip.patch
python mkmsg.py > msg.patch
hg --cwd b import ../msg.patch
hg --cwd b tip | grep email
rm -r b
echo % plain diff in email, no subject, message body
hg clone -r0 a b
grep -v '^Subject:' msg.patch | hg --cwd b import -
rm -r b
echo % plain diff in email, subject, no message body
hg clone -r0 a b
grep -v '^email ' msg.patch | hg --cwd b import -
rm -r b
echo % plain diff in email, no subject, no message body, should fail
hg clone -r0 a b
egrep -v '^(Subject|email)' msg.patch | hg --cwd b import -
rm -r b
echo % hg export in email, should use patch header
hg clone -r0 a b
hg --cwd a export tip > tip.patch
python mkmsg.py | hg --cwd b import -
hg --cwd b tip | grep second
rm -r b
# subject: duplicate detection, removal of [PATCH]
cat > mkmsg2.py <<EOF
import email.Message, sys
msg = email.Message.Message()
msg.set_payload('email patch\n\nnext line\n' + open('tip.patch').read())
msg['Subject'] = '[PATCH] email patch'
msg['From'] = 'email patcher'
sys.stdout.write(msg.as_string())
EOF
echo '% plain diff in email, [PATCH] subject, message body with subject'
hg clone -r0 a b
hg --cwd a diff -r0:1 > tip.patch
python mkmsg2.py | hg --cwd b import -
hg --cwd b tip --template '{desc}\n'
rm -r b
# bug non regression test
# importing a patch in a subdirectory failed at the commit stage
echo line 2 >> a/d1/d2/a
hg --cwd a ci -u someoneelse -d '1 0' -m'subdir change'
echo % hg import in a subdirectory
hg clone -r0 a b
hg --cwd a export tip | sed -e 's/d1\/d2\///' > tip.patch
dir=`pwd`
cd b/d1/d2 2>&1 > /dev/null
hg import ../../../tip.patch
cd $dir
echo "% message should be 'subdir change'"
hg --cwd b tip | grep 'subdir change'
echo "% committer should be 'someoneelse'"
hg --cwd b tip | grep someoneelse
echo "% should be empty"
hg --cwd b status