This reverts commit a86cbc1d5234998112378ed2b9eaf3c9e5fe919f.

This caused some values to be ellipsed that shouldn't have been, eg. in
Chroma tests:

```
             {
               Pattern: "\\$\\{",
        -      Type: chroma.TokenType(LiteralStringInterpol),
        +      Type: ...,
               Mutator: &chroma.pushMutator{
                 States: []string{
                   "curly",
        @@ -36,7 +36,7 @@
               Pattern: "^(\\w+)(=)",
               Type: &chroma.byGroupsEmitter{
                 Emitters: []chroma.Emitter{
        -          chroma.TokenType(NameAttribute),
        +          ...,
                   chroma.TokenType(Operator),
                 },
               },

```