Function apply

docs/components/editor.js:240–245

(result)

    };

    const apply = (result) => {
        if (!result) return false;
        writeAndRestore(result.text, result.caretStart ?? result.caret, result.caretEnd ?? result.caret);
        autoPairCaret = result.autoPair ?? -1;
        return true;
    };

    // Insert plain text at caret, replacing any selection; used by paste/drop after normalisation. Enforces `MAX_LINES`.
    const insertAtCaret = (str) => {