There is "show in folder" menu for file in downloads. And it will launch my file manager at the parent folder for the selected download file. There are so many files in my downloads folder, so i would like the specific file to be autoselected. My file manager support this if i pass the filename as parameter in the commandline. However, seems that firefox only pass the parent folder path to my file manager in the "show in folder". However can i customize firefox so that it will pass the full file name to my file manager when i click "show in folder", and my file manager will open the parent folder with the specific file autoselected.