aviary

Finally wanted to get ruby-mode functioning in mmm-mode.

This link was the most helpful (and so are the links on the page): http://blog.invisible.ch/archives/000417.html

Finally, I settled for this:

;;; mmm-mode
(require 'mmm-auto)
(setq mmm-global-mode 'maybe)
(setq mmm-submode-decoration-level 0)
	
;;; ruby-electric (omg this is going to spoil me)
(require 'ruby-electric)
	
(defun ruby-indent ()
  (local-set-key \"\C-m\" 'ruby-reindent-then-newline-and-indent))
	
(add-hook 'ruby-mode-hook
          '(lambda ()
             (ruby-indent)
             (ruby-electric-mode)
             ))
	
;;; eRuby (ruby/html mmm)
(mmm-add-classes
 '((erb-code
    :submode ruby-mode
    :front \"< %[#=]?\"
    :back \"%>”
    )))
	
(add-hook ‘html-mode-hook
          (lambda ()
            (setq mmm-classes ‘(erb-code))
            (mmm-mode-on)))
(add-to-list ‘auto-mode-alist ‘(”\\.rhtml$” . html-mode))

Now, I spent 2 hours trying to figure out how the HECK to get indentation working within the HTML. When I first saw it wasn’t working, I thought it was just me, but someone has noted this before. My last attempt almost ran me out of ideas. Since ruby-mode looks for indentational keywords, I would add “< %" to the list, as it is always precedes in embedded ruby anyway. Unfortunately, that doesn't work, but I think the reason why is because mmm-mode suppresses the initial start string from the encapsulated mode, so ruby-mode never sees it.

Instead, I went straight to the functions that used ruby-indent-beg-re. ruby-beginning-of-indent finds where ruby-mode should start indenting, so I decided to include the "(" in ruby-indent-beg-re. Of course, with all the other stuff that ruby-beginning-of-indent puts in, this fix might not work at all, so I modified the function to use this instead:


- concat "^\\(" ruby-indent-beg-re "\\)\\b"
+ concat "^\\(" ruby-indent-beg-re "\\)\\b\\|\("