Grammalecte  Diff

            return xNode;
        }
        catch (e) {
            showError(e);
        }
    },

    sendTextToClipboard (sText)  {
        // recipe from https://github.com/mdn/webextensions-examples/blob/master/context-menu-copy-link-with-types/clipboard-helper.js
        // It doesn’t seem to work anymore on Firefox. Still OK on Chrome.
        //console.log(sText);
        function setClipboardData (xEvent) {
            document.removeEventListener("copy", setClipboardData, true);
            xEvent.stopImmediatePropagation();
            xEvent.preventDefault();
            xEvent.clipboardData.setData("text/plain", sText);
        }
        document.addEventListener("copy", setClipboardData, true);
        document.execCommand("copy");
    },

    getCaretPosition (xElement) {
        // JS awfulness again.
        // recepie from https://stackoverflow.com/questions/4811822/get-a-ranges-start-and-end-offsets-relative-to-its-parent-container
        let nCaretOffsetStart = 0;
        let nCaretOffsetEnd = 0;
        let xSelection = window.getSelection();
        if (xSelection.rangeCount > 0) {