Nice to hear that you like it
In fact I wrote this program once for myself, but it didn't have the option to delete files, only to view them, so now I added deleting and that's it. The whole work (then and now) took less than an hour, I think
I wasn't inspired by the program you have mentioned, rjbull, because I didn't know there is such a program
I just made what seemed most obvious to me.
What was important to me at the time when I wrote the program for myself, is that it can open all ASCII files (in fact, it checks if there is a byte with value 0x00 anywhere in the file, and if not, it assumes that the file is human-readable).