Search for files with no extension

[JohnSinger61]

grepWin 2.1.7.1406
Windows 11 Pro 10.0.22631

Thank you for such a great tool. Use it everyday.

I have a number of files in the project with no extension . They are used to help the Make. In fact they are named Makefile. Using the wildcard *. to search inside these types of files always yields no results. Is there another way to specify these types of files?

[lifenjoiner]

1. In fact they are named Makefile

   Just Makefile.

2. files with no extension

   Regex match: [^.]+.