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I predominantly use emacs for editing my Puppet configuration files. I use the following settings in my .emacs to load Ruby mode and use it for Puppet config files (*.pp):

(autoload 'ruby-mode "ruby-mode" "Major mode for editing ruby scripts." t)
(setq auto-mode-alist  (cons '(".rb$" . ruby-mode) auto-mode-alist))
(setq auto-mode-alist  (cons '(".pp$" . ruby-mode) auto-mode-alist))

This works well except for the the indentation of the 'ensure' directive in my puppet files. Because ensure is a reserved word in Ruby, it outdents it:

cron { logrotate:
  command => "/usr/sbin/logrotate",
  user => root,
  hour => 2,
ensure => present
  minute => 0,
}

How do I tell Emacs to not treat ensure specially in Puppet files?

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1 Answer 1

up vote 1 down vote accepted

I think the simplest way to handle this is to just copy ruby-mode.el to puppet-mode.el and rip out all the places you see it handling ensure specially. In my ruby-mode.el, this seems to only happen in two places:

  1. Where the block words are defined

    (defconst ruby-block-mid-keywords
      '("then" "else" "elsif" "when" "rescue" "ensure")
      "Keywords where the indentation gets shallower in middle of block statements.")
    
  2. Where reserved words are defined:

    (defconst ruby-font-lock-keywords
    ...
                 "ensure"
    

I bet deleting ensure from those two places, saving as puppet-mode.el and then changing your .emacs to this would do the trick:

(autoload 'puppet-mode "puppet-mode" "Major mode for editing Puppet config" t)
(setq auto-mode-alist  (cons '(".pp$" . puppet-mode) auto-mode-alist))
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This worked well. I wasn't very happy with the emacs-puppet module available and this worked well. I also needed to do a replace-string for 'ruby-mode' / 'puppet-mode' in order to make this function as desired. –  Tim Brigham Apr 29 '12 at 2:07

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