Merge bundler to standard libraries.

  rubygems 2.7.x depends bundler-1.15.x. This is preparation for
  rubygems and bundler migration.

  * lib/bundler.rb, lib/bundler/*: files of bundler-1.15.4
  * spec/bundler/*: rspec examples of bundler-1.15.4. I applied patches.
    * https://github.com/bundler/bundler/pull/6007
    * Exclude not working examples on ruby repository.
    * Fake ruby interpriter instead of installed ruby.
  * Makefile.in: Added test task named `test-bundler`. This task is only
    working macOS/linux yet. I'm going to support Windows environment later.
  * tool/sync_default_gems.rb: Added sync task for bundler.

  [Feature #12733][ruby-core:77172]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59779 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 17 insertions, 0 deletions

diff --git a/lib/bundler/capistrano.rb b/lib/bundler/capistrano.rb
new file mode 100644
index 0000000000..7b0bbbd6d2
--- /dev/null
+++ b/lib/bundler/capistrano.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+# Capistrano task for Bundler.
+#
+# Add "require 'bundler/capistrano'" in your Capistrano deploy.rb, and
+# Bundler will be activated after each new deployment.
+require "bundler/deployment"
+require "capistrano/version"
+
+if defined?(Capistrano::Version) && Gem::Version.new(Capistrano::Version).release >= Gem::Version.new("3.0")
+  raise "For Capistrano 3.x integration, please use http://github.com/capistrano/bundler"
+end
+
+Capistrano::Configuration.instance(:must_exist).load do
+  before "deploy:finalize_update", "bundle:install"
+  Bundler::Deployment.define_task(self, :task, :except => { :no_release => true })
+  set :rake, lambda { "#{fetch(:bundle_cmd, "bundle")} exec rake" }
+end