I have a script which has multiple commands, each of which have their own arguments etc. I would like to add a simple flag to be used standalone to simply display the version of my script. I would like the the --help display to additionally show users this flag is available without affecting the other commands. For instance if my script is called foo, I'd like to be able to do:

foo --version or foo -v

but I'd still like to do:

foo mycommand myarg etc.

The two closest solutions I've tried each have a downside:

• the flags and the commands are displayed in different help windows e.g. foo --help shows the help window for the flags whilst foo standlone shows the help window for the commands
• the help window shows both flags and commands but the flag is interpreted as a flag to the commands such that if I type foo --version, the version is displayed but so is the help window because it thinks a command is missing

I'm using fire==0.5.0. Is there any way I can achieve this?