#!/usr/bin/ruby

escape = nil
buffer = ""
ARGF.each_char{|c|
   buffer += c
   if escape
      # Maybe terminate escape sequence.   Note that escape sequence will
      # be flushed together with the next character.  Consecutive escape
      # sequences will be flushed together.
      escape = (u = c.upcase) < "A" || u > "Z"
   elsif c == "\e"
      # Start buffering escape sequence
      escape = 1
   else
      # Flush buffered sequence
      print buffer
      sleep 0.1
      buffer = ""
   end
}

# Flush leftover text
print buffer if buffer != ""