[Proposal] Bare lists with module attributes

[Brian Cardarella]

Currently module attributes require explicit syntax to be passed. For example:

```

@foobar [:a, :b, c: true]

```

It might be cleaner if we could get implied lists, keyword lists:

```

@foobar :a, :b, c: true

```

This comes into play when using module attributes for functionality purposes rather than just value storage.

For example, with ecto_fixtures I am working on an API relying upon the test module attributes:

```

@fixtures :user_1, :user_2, :user_3

@serialize only: [:user_1]

```

I suspect would be more idiomatic than

```

@fixtures [:user_1, :user_2, :user_3]

@serialize [only: [:user_1]]

```

If there is a desire for this I can handle implementation. I would just need to be pointed in the right direction. (I suspect starting with the tokenizer)

[Andrea Leopardi]

Thanks for the proposal Brain,

I am -1 on this feature as I don't really see the benefit (just a very slight aesthetics thing) but I surely see the downside of having this "magic" going on. I prefer the explicitness of brackets if something is a list :P

Also, this may create confusion because then maybe  function arguments are just a list without brackets for syntactic sugar? This is a question I see myself asking as a newcomer.

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Andrea Leopardi

an.le...@gmail.com

[Eric Meadows-Jönsson]

Brian, keep in mind that `@serialize only: [:user_1]` already works because it's only one argument. But you cannot pass multiple arguments as for example `@fixtures :user_1, :user_2, :user_3`.

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Eric Meadows-Jönsson