Get rid of tabs in Emacs

If you work with other on text files, you often run into the problem that one of the programmers is using tabs set to 4, another to 8 spaces. For this reason, I always save my files without tabs. In Emacs there is a command to do this “untabify-buffer”, but I usually forget to do this.

Searching the internet I found the following code at, to do it automatically as soon as you save the file.

You can define your own hooks for other modes.

If you would use the untabify-buffer as a common hook, you can run into problems, because every file will be untabified.