Feature request: Add a "recursive=true/false" option

[Louis]

Hello,
I am using your package to parse options, and I would like to select which keys are recursively parsed, and which are not. In my use case, one of the values is to be passed as-is as options of a tikzpicture environment, so I would like luakeys not to parse it. I would like something like:

parse = luakeys.define({
  tikz = {recursive=false},
  foo = {},
  bar = {},
})

options = parse("foo={one=1, two=2}, bar=baz, tikz={scale=2, red}")

Expected value for options:

{
  ["foo"] = { -- "foo" has been recursively parsed (the default)
    ["one"] = 1,
    ["two"] = 2,
  },
  ["bar"] = baz,
  ["tikz"] = "scale=2, red", -- "tikz" has not been parsed
}

Maybe it is possible to globally disable recursive parsing using hooks? I could not manage to do so…

Thanks for your work,
Louis

[Louis]

I dug into the code and documentation, and:

• there is a huge Pattern to match the key/value string, and adding a recursive option might mean having two separate huge Patterns (not cool);
• the function render(result): string might do the trick. I still wonder if there are corner case where a string processed then rendered by luakeys might have a different "meaning" than the original case.

Conclusion: if it is easy to implement, it would be nice. If it is too much work, don't bother

[Josef Friedrich]

I'm afraid it's not easy to implement.

You can use the process hook in combination with luakeys.render() as you mentioned:

local parse = luakeys.define({
  tikz = {
    process = function(value, input, result, unknown)
      return luakeys.render(value)
    end,
  },
  foo = {},
  bar = {},
})

or simply:

options = parse('foo={one=1, two=2}, bar=baz, tikz="scale=2, red"')

[Louis]

I have tried with luakeys.render(), and it works. I will stick to it until I stumble upon a weird corner case where it no longer works.

Thanks
-- Louis