help doesn't check keys are valid

[timotheecour]

proc main(foo = "myfoo") = discard
dispatch(main, help = {"foo2": "help msg"})

this should give compiler error (foo2 instead of foo) but doesn't

(btw, haven't answered yet to your other answers, it's on my TODO list, thanks for the detailed answers so far!)

[c-blake]

Yeah. I've been aware of that one forever. There's a line in my TODO.md about it already. It may date back to the origins of TODO.md, even. :-)

[timotheecour]

(and btw, thanks for this project again, happily helping to convert some projects to cligen, eg nimterop/nimterop#21)

[c-blake]

Cool. Let me know what you think about setByParse being a table vs. a seq[(paramName, unparsedValue)]. I am kind of leaning toward the latter with a provided in/contains operator if Nim can't do string in seq[(string,T)] already.

It would be even nicer to go all the way to seq[(paramName, parsedValueVariant)], but I don't think we could use variants and still let CLI authors add their own types via custom argParse/argHelp definitions. Though I did my best to do enums/sets/seqs/etc., I'm sure there will be a need for custom types. Maybe I'm missing something about some kind of "Any" type or some other approach in Nim, though. Very open to ideas.