merge: do early copy to deal with issue636
Without copies/renames, merges source names are 1:1 with their
targets. Copies and renames introduce the possibility that there will
be two merges with the same input but different output. By doing the
copy to the destination name before the merge, the actual merge
becomes 1:1 again, and no source is the input to two different merges.
- add a preliminary scan to applyupdates to do copies
- for the merge action, pass the old name (for finding ancestors) and
the new name (for input to the merge) to filemerge
- eliminate the old post-merge copy
- lookup file contents from new name in filemerge
- pass new name to external merge helper
- report merge failure at new name
- add a test
#!/bin/sh
cp "$TESTDIR"/printenv.py .
# This test tries to exercise the ssh functionality with a dummy script
cat <<EOF > dummyssh
import sys
import os
os.chdir(os.path.dirname(sys.argv[0]))
if sys.argv[1] != "user@dummy":
sys.exit(-1)
if not os.path.exists("dummyssh"):
sys.exit(-1)
os.environ["SSH_CLIENT"] = "127.0.0.1 1 2"
log = open("dummylog", "ab")
log.write("Got arguments")
for i, arg in enumerate(sys.argv[1:]):
log.write(" %d:%s" % (i+1, arg))
log.write("\n")
log.close()
r = os.system(sys.argv[2])
sys.exit(bool(r))
EOF
echo "# creating 'remote'"
hg init remote
cd remote
echo this > foo
echo this > fooO
hg ci -A -m "init" -d "1000000 0" foo fooO
echo '[server]' > .hg/hgrc
echo 'uncompressed = True' >> .hg/hgrc
echo '[hooks]' >> .hg/hgrc
echo 'changegroup = python ../printenv.py changegroup-in-remote 0 ../dummylog' >> .hg/hgrc
cd ..
echo "# repo not found error"
hg clone -e "python ./dummyssh" ssh://user@dummy/nonexistent local
echo "# clone remote via stream"
hg clone -e "python ./dummyssh" --uncompressed ssh://user@dummy/remote local-stream 2>&1 | \
sed -e 's/[0-9][0-9.]*/XXX/g' -e 's/[KM]\(B\/sec\)/X\1/'
cd local-stream
hg verify
cd ..
echo "# clone remote via pull"
hg clone -e "python ./dummyssh" ssh://user@dummy/remote local
echo "# verify"
cd local
hg verify
echo '[hooks]' >> .hg/hgrc
echo 'changegroup = python ../printenv.py changegroup-in-local 0 ../dummylog' >> .hg/hgrc
echo "# empty default pull"
hg paths
hg pull -e "python ../dummyssh"
echo "# local change"
echo bleah > foo
hg ci -m "add" -d "1000000 0"
echo "# updating rc"
echo "default-push = ssh://user@dummy/remote" >> .hg/hgrc
echo "[ui]" >> .hg/hgrc
echo "ssh = python ../dummyssh" >> .hg/hgrc
echo "# find outgoing"
hg out ssh://user@dummy/remote
echo "# find incoming on the remote side"
hg incoming -R ../remote -e "python ../dummyssh" ssh://user@dummy/local
echo "# push"
hg push
cd ../remote
echo "# check remote tip"
hg tip
hg verify
hg cat -r tip foo
echo z > z
hg ci -A -m z -d '1000001 0' z
cd ../local
echo r > r
hg ci -A -m z -d '1000002 0' r
echo "# push should succeed"
hg push
cd ..
cat dummylog