Fix --width option of ri

lib/rdoc/ri/driver.rb

@@ -425,6 +425,7 @@ def initialize initial_options = {}
     @server      = options[:server]
     @use_stdout  = options[:use_stdout]
     @show_all    = options[:show_all]
+    @width       = options[:width]
 
     # pager process for jruby
     @jruby_pager_process = nil
@@ -795,7 +796,9 @@ def complete_method name, klass, selector, completions # :nodoc:
 
   def display document
     page do |io|
-      text = document.accept formatter(io)
+      f = formatter(io)
+      f.width = @width if @width and f.respond_to?(:width)
+      text = document.accept f
 
       io.write text
     end

test/test_rdoc_ri_driver.rb

@@ -348,6 +348,22 @@ def test_add_method_list
     assert_equal expected, out
   end
 
+  def test_output_width
+    @options[:width] = 10
+    driver = RDoc::RI::Driver.new @options
+
+    doc = @RM::Document.new
+    doc << @RM::IndentedParagraph.new(0, 'new, parse, foo, bar, baz')
+
+    out, = capture_io do
+      driver.display doc
+    end
+
+    expected = "new, parse, foo,\nbar, baz\n"
+
+    assert_equal expected, out
+  end
+
   def test_add_method_list_interative
     @options[:interactive] = true
     driver = RDoc::RI::Driver.new @options