bin/autoproj_bootstrap in autoproj-2.8.3 vs bin/autoproj_bootstrap in autoproj-2.8.4

@@ -411,10 +411,14 @@
             def self.shim_bundler(script_lines, ruby_executable, autoproj_gemfile_path, gems_gem_home)
                 return shim_bundler_old(ruby_executable, autoproj_gemfile_path, gems_gem_home) \
                     unless new_style_bundler_binstub?(script_lines)
 
                 script_lines.insert(1, <<-RESTART_BUNDLER)
+#
+# This file was generated by Bundler.
+#
+
 # Autoproj generated preamble
 if defined?(Bundler)
     Bundler.with_clean_env do
         exec($0, *ARGV)
     end
@@ -450,9 +454,13 @@
                 return shim_script_old(ruby_executable, root_dir,
                     autoproj_gemfile_path, gems_gem_home, load_line) \
                     unless new_style
 
                 script_lines.insert(1, <<-AUTOPROJ_PREAMBLE)
+#
+# This file was generated by Bundler.
+#
+
 # Autoproj generated preamble, v1
 if defined?(Bundler)
     Bundler.with_clean_env do
         exec(Hash['RUBYLIB' => nil], $0, *ARGV)
     end