Simple Find And Change Grep

    /*
    a basic find and change script not using fc queries
    */
    
    /*
    This is the text we are going to change
    look at the double white spaces and all that tab return stuff
    
    */
    var the_text_to_change = "An einem Morgen später Regenfälle\r\t"+
                                "kam Sierva María de Todos los Ángeles\t\r"+
                                " im Zeichen des Schützen als Siebenmonatskind\r\t"+
                                " recht und schlecht auf die Welt.\t\r "+
                                "\t\tSie erinnerte an eine farblose Kaulquappe\r"+
                                " \t\tund wäre fast von der um den Hals  gewickelten  Nabelschnur\r"+
                                " \t\tstranguliert worden.";
    var doc = app.documents.add(); // create a doc
    
    var tf = doc.pages.item(0).textFrames.add({
        /* Make a text frame in the first page with that text */
        geometricBounds:[12.7,12.7,297 - 12.7, 210 - 12.7],
        contents: the_text_to_change
    });
    
    
    
    app.findGrepPreferences = NothingEnum.nothing; // now empty the find what field!!! that's important!!!
    app.changeGrepPreferences = NothingEnum.nothing; // empties the change to field!!! that's important!!!
    
        // some settings
        app.findChangeGrepOptions.includeFootnotes = true;
        app.findChangeGrepOptions.includeHiddenLayers = false;
        app.findChangeGrepOptions.includeLockedLayersForFind = false;
        app.findChangeGrepOptions.includeLockedStoriesForFind = true;
        app.findChangeGrepOptions.includeMasterPages = true;
    
         var greps = [
             {"findWhat":"  +","changeTo":" "},//     Find all double spaces and replace with single spaces.
            {"findWhat":"\r ","changeTo":"\r"},//     Find all returns followed by a space And replace with single returns.
            {"findWhat":" \r","changeTo":"\r"},//     Find all returns preceded by a space and replace with single returns.
            {"findWhat":"\t\t+","changeTo":"\t"},//     Find all double tab characters and replace with single tab characters.
            {"findWhat":"\r\t","changeTo":"\r"},//     Find all returns followed by a tab character and replace with single returns.
            {"findWhat":"\t\r","changeTo":"\r"}//     Find all tabs followed by a return character and replace with single returns.
        ]
    
        // loop thru the greps object
        for(var i = 0;i < greps.length;i++){
            // this is like entering the find what text in the UI
            app.findGrepPreferences.findWhat = greps[i].findWhat;
            // this is like entering text in the change to
            app.changeGrepPreferences.changeTo = greps[i].changeTo;
            // and now hit the button
            doc.changeGrep();
            
            app.findGrepPreferences = NothingEnum.nothing; // now empty the find what field!!! that's important!!!
            app.changeGrepPreferences = NothingEnum.nothing; // empties the change to field!!! that's important!!!
        };
    // we are done