Error on the last line produces parser error pointing to wrong line

[thomasf]

I am using latest master ( 316bfc6 )

When trying to parse a broken toml where there is no newline on the last line the unstable.ParserError.Highlight becomes an empty list.

This file without a newline after the last c

a = '1'
b = '2'
c

Results in this error string:

1| a = '1'
 |  expected = after a key, but the document ends there
2| b = '2'
3| c

If I add a final newline to the input file the error is something you would expect

1| a = '1'
2| b = '2'
3| c

 |  ~ expected character =

[thomasf]

My assumption is that one of these tests should pass

func TestTomlLineError(t *testing.T) {
	var v interface{}
	err := toml.Unmarshal([]byte(`a = '1'
b = '2'
c`), &v)
	if err, ok := errors.AsType[*toml.DecodeError](err); ok {
		msg := err.String()
		t.Logf("error string\n%s", msg)
		if msg != `1| a = '1'
2| b = '2'
3| c
 | ~ expected = after a key, but the document ends there` {
			t.Fail()
		}
	}
}

or

func TestTomlLineError(t *testing.T) {
	var v interface{}
	err := toml.Unmarshal([]byte(`a='1'
c`), &v)
	if err, ok := errors.AsType[*toml.DecodeError](err); ok {
		msg := err.String()
		t.Logf("error string\n%s", msg)
		if msg != `1| a = '1'
2| b = '2'
3| c
 |  ~ expected character =` {
			t.Fail()
		}
	}
}