I am writing a small Kate script to add line numbers at the beginning of each line within selection.
However, the view.selection() always returns

ReferenceError: Range is not defined

The other calls view.hasSelection() and view.selectedText() are giving the correct results (e.g. True and the text within selection respectively).

Any help will be appreciated.

Interesting problem. I decided to check, it works for me on Kate 19.12.3:

Code: Select all

function addLineNumbers() {
    if (!view.hasSelection()) return;
    var selection = view.selection();

    var text = view.selectedText()
        .split('\n')
        .map((v, i) => i + ' ' + v)
        .join('\n');

    document.editBegin();
    document.removeText(selection);
    document.insertText(selection.start, text);
    document.editEnd();
}

Thanks @pvzh

I tried your code, but getting the same error with Kate version 22.04.3.
debug(selection) gives "ReferenceError: Range is not defined" and selection.start "undefined"