eval $(dinghy shellinit) produces unhelpful output when dinghy VM doesn't exist.

[mrmachine]

I destroyed my dinghy VM and then happened to open a new terminal window before re-creating it. In my .zshrc I have eval $(dinghy shellinit) which produces the following output:

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/json/common.rb:155:in `initialize': A JSON text must at least contain two octets! (JSON::ParserError)
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/json/common.rb:155:in `new'
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/json/common.rb:155:in `parse'
    from /usr/local/Cellar/dinghy/4.3.1/cli/dinghy/machine.rb:78:in `inspect'
    from /usr/local/Cellar/dinghy/4.3.1/cli/dinghy/machine.rb:82:in `inspect_driver'
    from /usr/local/Cellar/dinghy/4.3.1/cli/dinghy/machine.rb:50:in `vm_ip'
    from /usr/local/Cellar/dinghy/4.3.1/cli/dinghy/check_env.rb:21:in `expected'
    from /usr/local/Cellar/dinghy/4.3.1/cli/dinghy/check_env.rb:29:in `print'
    from /usr/local/Cellar/dinghy/4.3.1/cli/cli.rb:163:in `shellinit'
    from /usr/local/Cellar/dinghy/4.3.1/cli/thor/lib/thor/command.rb:27:in `run'
    from /usr/local/Cellar/dinghy/4.3.1/cli/thor/lib/thor/invocation.rb:126:in `invoke_command'
    from /usr/local/Cellar/dinghy/4.3.1/cli/thor/lib/thor.rb:359:in `dispatch'
    from /usr/local/Cellar/dinghy/4.3.1/cli/thor/lib/thor/base.rb:440:in `start'
    from /usr/local/bin/_dinghy_command:10:in `<main>'

This made me think my Dinghy installation was broken and searching around for an explanation. If there's no dinghy VM, shellinit shouldn't do anything, or should print a message about the VM not being found?

[codekitchen]

good catch, thanks