Add `--pre` flag to add prerelease gems

2 files changed, 4 insertions, 1 deletions

diff --git a/lib/bundler/cli.rb b/lib/bundler/cli.rb
index 890a0ac325..95be9388a9 100644
--- a/lib/bundler/cli.rb
+++ b/lib/bundler/cli.rb
@@ -445,6 +445,7 @@ module Bundler
     end
 
     desc "add GEM [VERSION]", "Add the specified gem to the bottom of Gemfile"
+    method_option "pre", :type => :boolean, :banner => "Check for newer pre-release gems"
     def add(name, version = nil, *gems)
       # require "bundler/cli/add"
       # Add.new(options, name, version, gems).run
diff --git a/lib/bundler/cli/inject.rb b/lib/bundler/cli/inject.rb
index 4e49bf7cd5..bebc438370 100644
--- a/lib/bundler/cli/inject.rb
+++ b/lib/bundler/cli/inject.rb
@@ -37,7 +37,9 @@ module Bundler
       definition = Bundler.definition(true)
       definition.resolve_remotely!
       specs = definition.index[name].sort_by(&:version)
-      specs.delete_if {|b| b.respond_to?(:version) && b.version.prerelease? }
+      unless options[:pre]
+        specs.delete_if {|b| b.respond_to?(:version) && b.version.prerelease? }
+      end
       spec = specs.last
       spec.version.to_s
     end