extlist = extlist + os.environ["PATHEXT"].split(os.pathsep)
lyx_exe, full_path = find_exe(["lyxc", "lyx"], extlist, path)
if lyx_exe == None:
extlist = extlist + os.environ["PATHEXT"].split(os.pathsep)
lyx_exe, full_path = find_exe(["lyxc", "lyx"], extlist, path)
if lyx_exe == None: