cmdserver: add option to not exit from message loop on SIGINT
Sending SIGINT to server is the only way to interrupt a command running in
command-server process. SIGINT will be caught at dispatch.dispatch() if
we're lucky. Otherwise it will terminate the serer process. This is
fundamentally unreliable as signals are delivered asynchronously.
"cmdserver.shutdown-on-interrupt=False" mitigate the issue by making the
server basically block SIGINT.
#require rust
$ rhg() {
> if [ -f "$RUNTESTDIR/../rust/target/debug/rhg" ]; then
> "$RUNTESTDIR/../rust/target/debug/rhg" "$@"
> else
> echo "skipped: Cannot find rhg. Try to run cargo build in rust/rhg."
> exit 80
> fi
> }
$ rhg unimplemented-command
[252]
$ rhg root
abort: no repository found in '$TESTTMP' (.hg not found)!
[255]
$ hg init repository
$ cd repository
$ rhg root
$TESTTMP/repository
$ rhg root > /dev/full
abort: No space left on device (os error 28)
[255]
$ rm -rf `pwd`
$ rhg root
abort: error getting current working directory: $ENOENT$
[255]