What is a .un~ file or why does Vim in the Terminal make the .un~ file?
When you edit and save files, Vim creates a file with the same name as the original file and an un~ extension at the end. Vim 7.3 contains a new feature persistent undo, that is, undo information won’t be lost when quitting Vim and be stored in a file that ends with .un~. You have … Read more