Change Emacs Default Coding System

user_34235 0
Viewed 13866

My problem stems from Emacs inserting the coding system headers into source files containing non-ascii characters:

# -*- coding: utf-8 -*-

My coworkers do not like these headers being checked into our repositories. I don't want them inserted into my files because Emacs automatically detects that the file should be UTF-8 regardless so there doesn't seem to be any benefit to anyone.

I would like to simply set Emacs to use UTF-8 automatically for all files, yet it seems to disagree with this idea. In an effort to fix this, I've added the following to my .emacs:

(prefer-coding-system 'utf-8)
(setq coding-system-for-read 'utf-8)
(setq coding-system-for-write 'utf-8)

This does not seem to solve my problem. Emacs still inserts the coding-system headers into my files. Anyone have any ideas?

EDIT:

I think this problem is specifically related to ruby-mode. I still can't turn it off though.

utf-8 encoding emacs
7 Answers

This works for me:

(setq ruby-insert-encoding-magic-comment nil)

As suggested here

I believe you're correct that it only happens in ruby-mode. It seems ruby-mode is trying to be helpful by adding the line, which makes Ruby detect the source file encoding automatically.

user_174100

You can also use directory local variables to set up the variables: http://www.gnu.org/software/emacs/manual/html_node/emacs/Directory-Variables.html

If you put a file with a special name .dir-locals.el in a directory, Emacs will read it when it visits any file in that directory or any of its subdirectories, and apply the settings it specifies to the file's buffer. Emacs searches for .dir-locals.el starting in the directory of the visited file, and moving up the directory tree. (To avoid slowdown, this search is skipped for remote files.)

Admin1
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