native-image --graalvm-opts is wrong

[marad]

I tried to pass the --enable-url-protocols=http but it failed miserably.

After some digging in the code it turns out that the implementation takes the opts and prepends them with the "-" character.

So I had to "hack" it by passing --graalvm-opt "-enable-url-protocols=http" so it works correctly. (note the absence of one "-" at the beginning of the option)

[penryu]

I was bitten by this, too, but after digging through the code I found the same workaround you did.

It might be more intuitive if all the switches were -single or -S, but I agree, it feels hacky with --double.

Before I submit a PR that will break people's code, I was hoping to get confirmation that this behavior wasn't chosen deliberately.