convert/svn: delegate to svn bindings if HTTP probe fails
convert extension tries to guess the remote repository type with HTTP probes.
Unfortunately, it does not handle authentication or HTTPS handshakes, so regular
svn repositories may be excluded. Instead, when a non-404 error is retrieved,
we keep trying with the svn bindings. The drawback is missing svn bindings will
make the conversion to fail even for non-svn targets. This can be avoided with
--source.
#!/bin/sh
echo % initialize remote repo with branches
hg init remote
cd remote
echo a > a
hg ci -Ama
hg branch br
hg ci -Amb
echo c > c
hg ci -Amc
hg log
cd ..
echo % try cloning -r branch
hg clone -rbr remote local1
hg -R local1 parents
echo % try cloning -rother clone#branch
hg clone -r0 remote#br local2
hg -R local2 parents
echo % try cloning -r1 clone#branch
hg clone -r1 remote#br local3
hg -R local3 parents