Ruby on Emacs Package Installation

Question

In reference to indent ruby code on the fly in emacs, how do I make a minor mode fire up automatically after a major mode is entered?

Basically, when I open a Ruby file (which opens in ruby-mode), I would like electric-indent-mode to start up automatically.

Also, I tried installing ruby-end but it is not working. I copied the ruby-end.rb into ~/.emacs.d and added the following into init.el:

(add-to-list 'load-path "ruby-end")
(require 'ruby-end)

I also ruby-end.pl and I get the same error. Here is the result of --debug-init's error:

Debugger entered--Lisp error: (file-error "Cannot open load file" "ruby-end")
2   require(ruby-end)
3   eval-buffer(#<buffer  *load*> nil "/Users/nayef/.emacs.d/init.el" nil t)  ; Reading at buffer position 1392
4   load-with-code-conversion("/Users/nayef/.emacs.d/init.el" "/Users/nayef/.emacs.d/init.el" t t)
5   load("/Users/nayef/.emacs.d/init" t t)
6   #[0 "^H\205\262^@     \306=\203^Q^@\307^H\310Q\202;^@ \311=\204^^^@\307^H\312Q\202;^@\313\307\314\315#\203*^@\316\202;^@\313\307\314\317#\203:^@\320\nB^R$
7   command-line()
8   normal-top-level()

Any ideas? Does anyone have pointers on Ruby on Rails development in Emacs? I use command-line based text Emacs 24.2.1.

Answer 1

electric-indent-mode is a global minor mode (i.e. it applies to all buffers in all modes), so just enable it once in your .emacs, no need to play around with hooks.

Answer 2

To solve the specific problem you're having here, load-path should contain directories, not file paths. So, try this:

(add-to-list 'load-path (expand-file-name "~/.emacs.d"))
(require 'ruby-end)

By the way, I still prefer the older ruby-electric.