Use :ui_class opt to set ui class

bin/vagrant

@@ -78,12 +78,6 @@ if argv.include?("--debug-timestamp")
   ENV["VAGRANT_LOG_TIMESTAMP"] = "1"
 end
 
-# Setting to enable/disable showing progress bars
-if argv.include?("--quiet-progress")
-  argv.delete("--quiet-progress")
-  ENV["VAGRANT_QUIET_PROGRESS"] = "1"
-end
-
 # Stdout/stderr should not buffer output
 $stdout.sync = true
 $stderr.sync = true
@@ -114,6 +108,7 @@ begin
     o.on("--debug", "Enable debug output")
     o.on("--timestamp", "Enable timestamps on log output")
     o.on("--debug-timestamp", "Enable debug output with timestamps")
+    o.on("--no-tty", "Enable non-interactive output")
   })
 
   # Create a logger right away
@@ -152,6 +147,12 @@ begin
     opts[:ui_class] = Vagrant::UI::MachineReadable
   end
 
+  # Setting to enable/disable showing progress bars
+  if argv.include?("--no-tty")
+    argv.delete("--no-tty")
+    opts[:ui_class] = Vagrant::UI::NonInteractive
+  end
+
   # Default to colored output
   opts[:ui_class] ||= Vagrant::UI::Colored
 

lib/vagrant/ui.rb

@@ -31,14 +31,8 @@ module Vagrant
       attr_accessor :stderr
 
       def initialize
-        if ENV["VAGRANT_QUIET_PROGRESS"]
-          show_progress = false
-        else
-          show_progress = true
-        end
-
         @logger   = Log4r::Logger.new("vagrant::ui::interface")
-        @opts     = { :show_progress => show_progress }
+        @opts     = {}
         @stdin  = $stdin
         @stdout = $stdout
         @stderr = $stderr

test/unit/bin/vagrant_test.rb

@@ -92,11 +92,12 @@ describe "vagrant bin" do
       end
     end
 
-    describe "--quiet-progress" do
-      let(:argv) { ["--quiet-progress"] }
+    describe "--no-tty" do
+      let(:argv) { ["--no-tty"] }
 
       it "should enable less verbose progress output" do
-        expect(ENV).to receive(:[]=).with("VAGRANT_QUIET_PROGRESS", "1")
+        expect(Vagrant::Environment).to receive(:new).
+          with(hash_including(ui_class: Vagrant::UI::NonInteractive))
       end
     end
   end