Delete Needless Spaces

Emacs: removing the unnecessary spaces from your buffers.

Intro

Delete Needless Spaces is a smart minor mode that keep clean our buffers from silly spaces. It's enabled by default for all new and already clean buffers but, if you visit a dirty file, it disables itself.

When this minor mode is enabled (implicitly for clean buffers and explicitly on dirty buffers with M-x delete-nl-spaces-mode), before a buffers it's saved to its files this mode:

• deletes initial blank lines;
• changes spaces on tabs or vice versa depending on indent-tabs-mode;
• deletes the trailing whitespaces and empty last lines;
• deletes also latest blank line if require-final-newline is nil;

Installation

Copy the file in a directory which is in the Emacs load-path. Then, execute the following code either directly or in your .emacs file:

;;; Deleting needless spaces before saving buffers.
(require 'delete-nl-spaces)