Awesome

Guard-CTags-Bundler

Guard-CTags-Bundler generates ctags for your project and for gems in your bundle. For project tags file tags is generated, for gems tags file gems.tags is generated.

Features

• Initially developed for Rails projects, but theoretically can be used with any ruby project, that uses Bundler, with minimal configuration changes.
• When you run bundle install in your project, gems.tags file is automatically is generated or updated.
• When you save one of you project's ruby files, tags file is automatically generated or updated.
• Only Linux is tested, but probably will work on Mac

Install

Make sure you have Guard installed.

Install the gem:

$ gem install guard-ctags-bundler

Add it to your Gemfile (inside development group):

gem 'guard-ctags-bundler'

And then add a basic setup to your Guardfile:

$ guard init ctags-bundler

Usage

Please, read Guard usage doc

Guardfile Options

:src_path => ".", # source path to be scanned for tags (default .)
:emacs => false, # run ctags in emacs mode and merge tags and gems.tags into TAGS file
:stdlib => true, # run ctags for core and stdlib, generating stdlib.tags (default false)
:binary => 'ctags-exuberant' # name of the ctags binary (default ctags)
:arguments => '-R --languages=ruby --fields=+l' # change the arguments passed to ctags (default '-R --languages=ruby')
:stdlib_file => "stdlib.tags" # name of tags file for stdlib references (default stdlib.tags)
:bundler_tags_file => "gems.tags" # name of tags file for bundler gems references (default gems.tags)
:project_file => "tags" # name of tags file for project references (default tags)

For a typical Rails application, Guardfile can look like this (default):

guard 'ctags-bundler', :src_path => ["app", "lib", "spec/support"] do
  watch(/^(app|lib|spec\/support)\/.*\.rb$/)
  watch('Gemfile.lock')
end

CTags

Ctags generates an index (or tag) file of language objects found in source files that allows these items to be quickly and easily located by a text editor or other utility. A tag signifies a language object for which an index entry is available (or, alternatively, the index entry created for that object).

In ubuntu you can install ctags by running

$ sudo apt-get install exuberant-ctags

Vim

Vim supports ctags by default. All you need to do is add your gems.tags file to the Vim's tag stack.

set tags+=gems.tags

Emacs

Ctags can be used with emacs too. Add :emacs => true option to your Guardfile and ctags will be generated with -e option:

guard 'ctags-bundler', :emacs => true, :src_path => ["app", "lib", "spec/support"] do
  watch(/^(app|lib|spec\/support)\/.*\.rb$/)
  watch('Gemfile.lock')
end

Thanks to Jorge Dias and Antono Vasiljev for emacs support.