Respect user's set options when running original widget

Fixes GitHub #379

spec/integrations/glob_subst_spec.rb

@@ -0,0 +1,12 @@
+describe 'with `GLOB_SUBST` option set' do
+  let(:after_sourcing) do
+    -> {
+      session.run_command('setopt GLOB_SUBST')
+    }
+  end
+
+  it 'error messages are not printed' do
+    session.send_string('[[')
+    wait_for { session.content }.to eq('[[')
+  end
+end