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 stackoverflow.com, to do it automatically as soon as you save the file.
(defun untabify-buffer ()
"Untabify current buffer"
(untabify (point-min) (point-max)))
(defun progmodes-hooks ()
"Hooks for programming modes"
(add-hook 'before-save-hook 'progmodes-write-hooks))
(defun progmodes-write-hooks ()
"Hooks which run on file write for programming modes"
(add-hook 'gams-mode-hook 'progmodes-hooks)
(add-hook 'ess-mode-hook 'progmodes-hooks)
(add-hook 'python-mode-hook 'progmodes-hooks)
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.