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
hg init a
cd a
echo a > a
hg ci -Ama -d '1123456789 0'
hg --config server.uncompressed=True serve -p 20059 -d --pid-file=hg.pid
cat hg.pid >> $DAEMON_PIDS
cd ..
("$TESTDIR/tinyproxy.py" 20060 localhost >proxy.log 2>&1 </dev/null &
echo $! > proxy.pid)
cat proxy.pid >> $DAEMON_PIDS
sleep 2
echo %% url for proxy, stream
http_proxy=http://localhost:20060/ hg --config http_proxy.always=True clone --uncompressed http://localhost:20059/ b | \
sed -e 's/[0-9][0-9.]*/XXX/g' -e 's/[KM]\(B\/sec\)/X\1/'
cd b
hg verify
cd ..
echo %% url for proxy, pull
http_proxy=http://localhost:20060/ hg --config http_proxy.always=True clone http://localhost:20059/ b-pull
cd b-pull
hg verify
cd ..
echo %% host:port for proxy
http_proxy=localhost:20060 hg clone --config http_proxy.always=True http://localhost:20059/ c
echo %% proxy url with user name and password
http_proxy=http://user:passwd@localhost:20060 hg clone --config http_proxy.always=True http://localhost:20059/ d
echo %% url with user name and password
http_proxy=http://user:passwd@localhost:20060 hg clone --config http_proxy.always=True http://user:passwd@localhost:20059/ e
echo %% bad host:port for proxy
http_proxy=localhost:20061 hg clone --config http_proxy.always=True http://localhost:20059/ f
exit 0