less_options = {
  all_on_start: true,
  all_after_change: true,
  patterns: [/^.+\.less$/],
  output: 'public/stylesheets'
}

guard :less, less_options do
  less_options[:patterns].each { |pattern| watch(pattern) }
end

all_after_change: [true|false]   # run on all files after any changed files
                                    # default: true

all_on_start: [true|false]       # run on all the files at startup
                                    # default: true

output: 'relative/path'          # base directory for output CSS files; if unset,
                                    # .css files are generated in the same directories
                                    # as their corresponding .less file
                                    # default: nil

import_paths: ['lib/styles']     # an array of additional load paths to pass to the
                                 # LESS parser, used when resolving `@import`
                                 # statements
                                 # default: [] (see below)

compress: true                   # minify output

yuicompress: true                # minify output using yui

patterns: []                     # array of patterns for matching watched/processed files

less_options = {
  all_on_start: true,
  all_after_change: true,
  patterns: [/^app/stylesheets/(.+\.less)$/],
  output: 'public/stylesheets'
}

guard :less, less_options do
  less_options[:patterns].each { |pattern| watch(pattern) }
end