Merge #7442

7442: Fix `bundle exec`'ing to rubygems being silent r=deivid-rodriguez a=deivid-rodriguez

### What was the end-user problem that led to this PR?

The problem was that #7401 caused a regression where `bundle exec`'ing to rubygems would silence rubygems output.

### What was your diagnosis of the problem?

My diagnosis was that the removal of:
* Code where `Bundler::RGProxy` would be only set conditionally on `Bundler.ui =` not being passed `nil`.
* Code setting `Bundler.ui` to `nil` right before shelling during `bundle exec`.

caused rubygems UI to be silent during `bundle exec gem`.

### What is your fix for the problem, implemented in this PR?

My fix is to explictly "unsilence" rubygems UI before `bundle exec` calls.

### Why did you choose this fix out of the possible options?

I chose this fix because it's more explicit than the previous one.

Fixes #7441.

Co-authored-by: David Rodríguez <deivid.rodriguez@riseup.net>
(cherry picked from commit a11c104c5b6222c018248b585cca2a4f340a9a71)

1 files changed, 6 insertions, 0 deletions

diff --git a/spec/commands/exec_spec.rb b/spec/commands/exec_spec.rb
index 7ae504d360..d2e85a289b 100644
--- a/spec/commands/exec_spec.rb
+++ b/spec/commands/exec_spec.rb
@@ -55,6 +55,12 @@ RSpec.describe "bundle exec" do
     expect(out).to eq("hi")
   end
 
+  it "works when exec'ing to rubygems" do
+    install_gemfile 'gem "rack"'
+    bundle "exec gem --version"
+    expect(out).to eq(Gem::VERSION)
+  end
+
   it "respects custom process title when loading through ruby" do
     script_that_changes_its_own_title_and_checks_if_picked_up_by_ps_unix_utility = <<~'RUBY'
       Process.setproctitle("1-2-3-4-5-6-7-8-9-10-11-12-13-14-15")