Pipe compiler errors to it.

vl.rb

#!/usr/bin/env ruby
# coding: utf-8

require 'smart_colored'
STDIN.each_line do |l|
  if m = l.match(%r{((/.*?)+)\:(\d+)})
    fn, _, ln = m.captures
    next unless File.exist? fn
    ln = ln.to_i
    puts m.to_s.colored.bold
    system "cat #{fn} | head -n#{ln+1} | tail -n#{3}"
    print "\n"
  end
end