Auto merge of #5302 - bundler:seg-open-exit, r=indirect

[CLI::Open] Support exiting when selecting gem

Closes #5301

(cherry picked from commit 8449427)

lib/bundler/cli/open.rb

@@ -13,7 +13,8 @@ def initialize(options, name)
     def run
       editor = [ENV["BUNDLER_EDITOR"], ENV["VISUAL"], ENV["EDITOR"]].find {|e| !e.nil? && !e.empty? }
       return Bundler.ui.info("To open a bundled gem, set $EDITOR or $BUNDLER_EDITOR") unless editor
-      path = Bundler::CLI::Common.select_spec(name, :regex_match).full_gem_path
+      return unless spec = Bundler::CLI::Common.select_spec(name, :regex_match)
+      path = spec.full_gem_path
       Dir.chdir(path) do
         command = Shellwords.split(editor) + [path]
         Bundler.with_clean_env do

spec/commands/open_spec.rb

@@ -67,6 +67,13 @@
     expect(out).to match(/bundler_editor #{default_bundle_path('gems', 'activerecord-2.3.2')}\z/)
   end
 
+  it "allows selecting exit from many match gems" do
+    env = { "EDITOR" => "echo editor", "VISUAL" => "echo visual", "BUNDLER_EDITOR" => "echo bundler_editor" }
+    bundle! "open active", :env => env do |input, _, _|
+      input.puts "0"
+    end
+  end
+
   it "performs an automatic bundle install" do
     gemfile <<-G
       source "file://#{gem_repo1}"