For scripts it can be useful to output not only one, but multiple
formats (e.g. to obtain both path and serial of a TTY). The script
now support passing multiple formats.
Note that only simple formats can be combined, as the JSON and markdown
table won't mix well with any other format.
The example in the tool documentation contains several things that are
wrong:
- exports PORT.
- Defines the port using :=.
- Defines PORT instead of PORT_LINUX, PORT_DARWIN
- ifeq-based logic (which will force an evaluation).
I have not tested the new example script.
