Returns the best running editor on a Mac, if any, based on my personal order of preference.

pick_editor.rb

#!/usr/bin/ruby
#
# Returns the best running editor (Mac), if any, based on my personal order of preference.

def pick_editor
  editors = ['TextMate','MacVim','Espresso','Coda','TextEdit']
  ps = %x{ps Ao comm|grep .app|awk '{match($0,/([^\\/]+).app/); print substr($0,RSTART,RLENGTH)}'}.split("\n")
  editors.each {|editor|
    return editor if ps.include?(editor+".app")
  }
  return false
end

puts pick_editor