如何为SublimeText3设置Ctags

我正在使用Sublime Text 3和Ruby On Rails项目.

前段时间,我使用本教程设置CTags .

这很好,但突然停止工作.尝试重建项目的标记时,我收到以下错误.

/ bin/sh:ctags_for_ruby:找不到命令

这些是我的文件:

在/ usr/local/bin目录/ ctags_for_ruby:

#!/usr/bin/env ruby
system "find . -name '*.rb' | ctags -f .tags -L -"

if File.exist? './Gemfile'
  require 'bundler'
  paths = Bundler.load.specs.map(&:full_gem_path).join(' ')
  system "ctags -R -f .gemtags #{paths}"
end

〜/ Library/Application Support/Sublime Text 3/Packages/User/CTags.sublime-settings

{
    "debug"           :  false,
    "autocomplete": false,
    "command"   :  "ctags_for_ruby",
    "filters"         :  {
        "source.python": {"type":"^i$"}
    },
    "definition_filters": {
        "source.php": {"type":"^v$"}
    },
    "definition_current_first": true,
    "show_context_menus": true,
    "extra_tag_paths" :  [ [["source.python", "windows"], "C:\\Python27\\Lib\\tags"]],
    "extra_tag_files" : [".gemtags", ".tags"]
}

而$PATH变量包含/usr/local/bin目录.

为什么Sublime无法找到/执行ctags_for_ruby文件？