Better token formatting available?

What is your question?

I have a Lark grammar that has the following production:

!inneroperator : "has" | "=" | "<" | ">" | "<=" | ">=" | "!="

(The whole grammar should parse statements like foo < 3, pretty simple stuff actually)

When I give parse something invalid, such as foo 3, the error message reads:

No terminal defined for '3' at line 1 col 8
foo 3
Expecting: {'EQUAL', 'HAS', 'MORETHAN', '__ANON_1', '__ANON_0', '__ANON_2', 'LESSTHAN'}

This is already quite readable, and I’m impressed. However, I don’t know what these ANON things are, and also I would ideally output = instead of EQUAL. Is that possible?

[erezsh]

There has already been some talk about improving the error messages by providing the expected values, so I will keep that in mind as a possible task.

Another easier fix we could do, is include default names for >= and <= and !=, as they are common enough to the landscape.

[erezsh]

When a terminal doesn’t have a name (i.e. defined as "foo"), and Lark can’t guess the name, it calls it ANON.