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rails--rails/railties/lib/rails/cli.rb
Steve Klabnik c5a9c02e01 Fix backwards compatibility with Rails 3 apps.
When we removed script/rails and introduced bin/rails, we accidentally
introduced a regression. If you install Rails 4 as a gem, then try to do
something in a Rails 3 application:

    $ rails g

This will throw the 'please type rails new foo' message rather than the
proper generator documentation message. This is because older apps don't
have bin/rails.

Therefore, we now *prefer* bin/rails, but still search for script/rails,
and exec the one we find.
2013-02-22 14:30:21 -05:00

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require 'rbconfig'
require 'rails/app_rails_loader'
# If we are inside a Rails application this method performs an exec and thus
# the rest of this script is not run.
Rails::AppRailsLoader.exec_app_rails
require 'rails/ruby_version_check'
Signal.trap("INT") { puts; exit(1) }
if ARGV.first == 'plugin'
ARGV.shift
require 'rails/commands/plugin_new'
else
require 'rails/commands/application'
end