Lookupfile Vim plug-in problems

Lookupfile is indeed an unparalleled file search plug-in, but one problem has not been solved. After the <F5> query window is called up, enter the file name. After several matching files are found, you can only press Ctrl-N to move up and down. If I press the top/bottom key, the search mode is exited and a new file is created. The file name is the string of the file to be searched. For example, if you want to solve the libvlc. c problem, press the key and create a new libvlc. c file. Why? I have never figured it out. This afternoon, the entire lookupfile. VimProgramAfter reading it, I did not find anything to modify. Only the key functions mapped to Ctrl-N and Ctrl-O are displayed. When I first read the vim extension script, there are a lot of things that I haven't understood yet. I will record them and wait for them to be solved later.