punctuation.definition.attrset-or-function.nix doesn't allow antiquotation as first key

[lilyball]

If I have an attrset with a newline after the { in a position that admits functions, this is scoped as punctuation.definition.attrset-or-function.nix. In this context, if the first key is an antiquotation, it flags this as a syntax error. Besides being an incorrect error, this can cause the rest of the file to tokenize incorrectly as well.

As an example, see lib/generators.nix in nixpkgs. This also highlights incorrectly in GitHub of course. Sample extract:

{
  # …
  recurse = path: value:
    # …
    if length path > 1 then {
      ${concatStringsSep "." (lib.reverseList (tail path))}.${head path} = value;
    } else {
      ${head path} = value;
    };
}

In this example, the rest of the line ends up being treated as inside a double-quoted string, and so the rest of the file is highlighted incorrectly.

This particular issue is actually something I fixed in my vscode-nix fork a year ago, see lilyball/vscode-nix@2a7db0f, but I'm not in a position to port this to vscode-nix-ide or open any PRs at the moment.

[jnoortheen]

Thanks for the input @lilyball