M.exe always generates a Collection for a Record from an Mg grammar

Question

...even though Intellipad correctly displays it as a record.

Example:

.mg:

module M {
    language L {
        syntax Main = i:ident n:num => { i, n };
        token ident = a:any => ident{a};
        token num = a:any => num{a};
    }
}

Instance document: "a7"

Intellipad output:

{
  ident => "a",
  num => "7"
}

After compiling the .mg with m.exe the root node is a collection.

Answer 1

Hi; what happens if you do this? (Sorry I can't test it myself) Main{ i, n }

Answer 2

Same difference...

"Main" is just the brand of the node, which again shows up as a collection.

ps: Btw, I verified this again through the test suite.

pps: "Chapeau" pour jsmeta!

Answer 3

Another artifact of MGrammar/MGraph misalignment.