nobu	2018-01-26 12:41:04 +0900 (Fri, 26 Jan 2018)

  New Revision: 62047

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=62047

  Log:
    optparse.rb: froze string literals

  Modified files:
    trunk/lib/optparse.rb
    trunk/test/optparse/test_summary.rb
Index: lib/optparse.rb
===================================================================
--- lib/optparse.rb	(revision 62046)
+++ lib/optparse.rb	(revision 62047)
@@ -1,4 +1,4 @@ https://github.com/ruby/ruby/blob/trunk/lib/optparse.rb#L1
-# frozen_string_literal: false
+# frozen_string_literal: true
 #
 # optparse.rb - command-line option analysis with the OptionParser class.
 #
@@ -577,7 +577,7 @@ class OptionParser https://github.com/ruby/ruby/blob/trunk/lib/optparse.rb#L577
       while s = lopts.shift
         l = left[-1].length + s.length
         l += arg.length if left.size == 1 && arg
-        l < max or sopts.empty? or left << ''
+        l < max or sopts.empty? or left << +''
         left[-1] << (left[-1].empty? ? ' ' * 4 : ', ') << s
       end
 
@@ -1136,7 +1136,7 @@ XXX https://github.com/ruby/ruby/blob/trunk/lib/optparse.rb#L1136
   #
   def banner
     unless @banner
-      @banner = "Usage: #{program_name} [options]"
+      @banner = +"Usage: #{program_name} [options]"
       visit(:add_banner, @banner)
     end
     @banner
@@ -1180,7 +1180,7 @@ XXX https://github.com/ruby/ruby/blob/trunk/lib/optparse.rb#L1180
   #
   def ver
     if v = version
-      str = "#{program_name} #{[v].join('.')}"
+      str = +"#{program_name} #{[v].join('.')}"
       str << " (#{v})" if v = release
       str
     end
Index: test/optparse/test_summary.rb
===================================================================
--- test/optparse/test_summary.rb	(revision 62046)
+++ test/optparse/test_summary.rb	(revision 62047)
@@ -44,4 +44,13 @@ class TestOptionParser::SummaryTest < Te https://github.com/ruby/ruby/blob/trunk/test/optparse/test_summary.rb#L44
     assert_equal("foo bar\n", o.to_s, bug6348)
     assert_equal(["foo bar"], o.to_a, bug6348)
   end
+
+  def test_ver
+    o = OptionParser.new("foo bar")
+    o.program_name = "foo"
+    o.version = [0, 1]
+    assert_equal "foo 0.1", o.ver
+    o.release = "rel"
+    assert_equal "foo 0.1 (rel)", o.ver
+  end
 end

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