Type for Diff.Text

[7AC]

The current type for Text is string:

type Diff struct {
    Type Operation
    Text string
}

When I call DiffMainRunes() though looks like the Text in each diff needs to be interpreted as a []rune. Is there a reason not to define that as []rune (or use multiple types if it's used differently in other APIs)? It was hard to interpret since Text is not printable in this case, and the documentation doesn't mention this.

Here's my code:

    a := "foo\nbar\nbaz"
    b := "foo\nbaz\nfooz\nbarrington"
    dmp := diffmatchpatch.New()
    r1, r2, f := dmp.DiffLinesToRunes(a, b)
    fmt.Println(f)
    fmt.Println(r1)
    fmt.Println(r2)
    s := dmp.DiffMainRunes(r1, r2, false)
    for _, d := range s {
        fmt.Println("d.Type:", d.Type)
        // Printing d.Text here without converting it produces an empty string
        fmt.Println("d.Text:", []rune(d.Text))
    }

[7AC]

This is actually worse than it seems as with long diffs the indices end up outside the range of unicode characters, resulting in a bunch of 65533 in the diff which doesn't match anything. So basically the library is only usable as long as the length of the diff is shorter than the range of unicode characters.