remove tabs quickly

e.penta

    js <<EOF
    function removeTabs(count, arg) {
            let end_pattern = /^[0-9]+$|^(\^|\$)$/;
            if (!end_pattern.test(arg)) {
                    dactyl.echo("Invalid Range", commandline.FORCE_SINGLELINE)
                    return false;
            }
           
            let end = 0;
            if (arg == "$")
                    end = tabs.visibleTabs.length;
            else if (arg == "^")
                    end = -tabs.visibleTabs.length;
            else
                    end = parseInt(arg);

            let start = 0;
            if (typeof count === "object")
                    if (end < start)
                            start = tabs.index(null, true) + 1;
                    else
                            start = tabs.index(null, true);
            else {
                    start = parseInt(count);
                    if (start != 0)
                            start = parseInt(count) - 1;
            }

            let visibleTabs = tabs.visibleTabs;
            let removedTabs = [];
            if (start < end )
                    removedTabs = Array.slice(visibleTabs).slice(start, end);
            else
                    removedTabs = Array.slice(visibleTabs).slice(end, start);
            let removedTabs_length = removedTabs.length;
            removedTabs.forEach(function (aTab) {
                    gBrowser.removeTab(aTab);
            });
            dactyl.echo(removedTabs_length + " tab(s) has been removed!");
    }
    EOF
    nmap -count -arg -javascript e removeTabs(count, arg)

    " e$ 删除当前及其右侧所有标签
    " e^ 删除当前及其左侧所有标签
    " 3e8 从 3 到 8 被删除