Fix ToHtmlCrossref#convert_flow for backslash in tt tag

Author: st0012

lib/rdoc/markup/to_html_crossref.rb

@@ -197,14 +197,24 @@ def convert_flow(flow)
         if tt_tag?(item.turn_on) and
           String === (str = flow[i]) and
           RDoc::Markup::AttrChanger === flow[i+1] and
-          tt_tag?(flow[i+1].turn_off, true) and
-          (@options.hyperlink_all ? ALL_CROSSREF_REGEXP : CROSSREF_REGEXP).match?(str) and
-          (text = cross_reference str) != str
+          tt_tag?(flow[i+1].turn_off, true)
         then
-          text = yield text, res if defined?(yield)
-          res << text
-          i += 2
-          next
+          crossref_re = @options.hyperlink_all ? ALL_CROSSREF_REGEXP : CROSSREF_REGEXP
+
+          if match = crossref_re.match(str)
+            trailing = str[match.end(1)..-1] || ''
+
+            if match.begin(1).zero? and
+               trailing.match?(/\A[[:punct:]\s]*\z/) and
+               trailing !~ /[#@]/ and
+               (text = cross_reference str) != str
+            then
+              text = yield text, res if defined?(yield)
+              res << text
+              i += 2
+              next
+            end
+          end
         end
         off_tags res, item
         on_tags res, item

test/rdoc/rdoc_markup_to_html_crossref_test.rb

@@ -33,6 +33,28 @@ def test_convert_CROSSREF
     assert_equal para("<code># :stopdoc:</code>:"), result
   end
 
+  def test_convert_CROSSREF_backslash_in_tt
+    @options.hyperlink_all = false
+
+    formatter = RDoc::Markup::ToHtmlCrossref.new @options, 'C9.html', @c9_b
+    result = formatter.convert '<tt>C1</tt>'
+
+    assert_equal para('<a href="C1.html"><code>C1</code></a>'), result
+
+    formatter = RDoc::Markup::ToHtmlCrossref.new @options, 'C9.html', @c9_b
+    result = formatter.convert '<tt>.bar.hello()</tt>'
+
+    assert_equal para('<code>.bar.hello()</code>'), result
+
+    formatter = RDoc::Markup::ToHtmlCrossref.new @options, 'C9.html', @c9_b
+    result = formatter.convert '<tt>.bar.hello(\)</tt>'
+
+    formatter = RDoc::Markup::ToHtmlCrossref.new @options, 'Foo.html', foo
+    result = formatter.convert '<tt>.bar.hello(\\)</tt>'
+
+    assert_equal para('<code>.bar.hello(\\)</code>'), result
+  end
+
   def test_convert_CROSSREF_ignored_excluded_words
     @options.autolink_excluded_words = ['C1']