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Emacs flymake mode for ruby
(require 'flymake)
;; I don't like the default colors :)
(set-face-background 'flymake-errline "red4")
(set-face-background 'flymake-warnline "dark slate blue")
;; Invoke ruby with '-c' to get syntax checking
(defun flymake-ruby-init ()
(let* ((temp-file (flymake-init-create-temp-buffer-copy
'flymake-create-temp-inplace))
(local-file (file-relative-name
temp-file
(file-name-directory buffer-file-name))))
(list "ruby" (list "-c" local-file))))
(push '(".+\\.rb$" flymake-ruby-init) flymake-allowed-file-name-masks)
(push '("Rakefile$" flymake-ruby-init) flymake-allowed-file-name-masks)
(push '("^\\(.*\\):\\([0-9]+\\): \\(.*\\)$" 1 2 nil 3) flymake-err-line-patterns)
(add-hook 'ruby-mode-hook 'flymake-mode)
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