abi struct tags only work in lower case

[cyberhorsey]

package main

import (
	"github.com/umbracle/ethgo/abi"
)

var (
	t = abi.MustNewType("tuple(tuple(bytes32 camelCase) header)")
)

type Header struct {
	Slice []byte `abi:"camelCase"`
}

type Proof struct {
	Header Header
}

func main() {

	b := Header{
		Slice: []byte{01},
	}

	s := Proof{
		Header: b,
	}
	_, err := t.Encode(s)
	if err != nil {
		panic(err)
	}
}

gives error cannot get key camelCase, yet removing the capital C works.

[cyberhorsey]

additionally, is there any way to do a bytes, bytes type?
ie: i have (bytes account, bytes storage = abi.decode(b) where b is a bytes[] in my Solidity contract.

In Ethers, I would do:
ethers.defaultAbiCoder.Encode(["bytes", "bytes"], [account, storage]

[ferranbt]

gives error cannot get key camelCase, yet removing the capital C works.

Merging your PR, thank you for the contribution!

additionally, is there any way to do a bytes, bytes type?

Yes, it should be possible doing something like:

t := abi.MustNewType("tuple(bytes, bytes)")
t.Decode([]byte{...})