var sci = ko.views.manager.currentView.scimoz;
// If there's no block our cursor moves so we need to remember where it starts.
var curLine = sci.lineFromPosition(sci.currentPos);
ko.commands.doCommand("cmd_blockSelect");
if (sci.selText == sci.text) {
    // We have just a single line selected
    sci.gotoLine(curLine);
    sci.vCHome();
    sci.lineEndExtend();
    var line = sci.selText;
    line = line.replace(new RegExp("{ ", "g"), "{\n\t")
        .replace(new RegExp("; ", "g"), ";\n\t")
        .replace(new RegExp("\t}", "g"), "}");
    sci.replaceSel(line);
} else {
    // We have a block selected
    var line = sci.selText;
    line = line.replace(new RegExp("  ", "g"), "")
        // We need a negative look-ahead so we don't erase
        // the first bracket's indentation
        .replace(new RegExp("\t(?![{\t])", "g"), "")
        .replace(new RegExp("\n", "g"), " ");
    sci.replaceSel(line+"\n");
    sci.lineUp();
}