From caf234665cebfbe35c90c7825118b3ba36c84de9 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sat, 15 May 2021 01:06:36 +0900
Subject: [PATCH] Fix for explicit http link

---
 lib/rdoc/markup/to_html.rb            |  4 ++--
 test/rdoc/test_rdoc_markup_to_html.rb | 12 ++++++------
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/lib/rdoc/markup/to_html.rb b/lib/rdoc/markup/to_html.rb
index 6a8ca8a2d7..f3dd96e157 100644
--- a/lib/rdoc/markup/to_html.rb
+++ b/lib/rdoc/markup/to_html.rb
@@ -357,8 +357,8 @@ def gen_url url, text
        url =~ /\.(gif|png|jpg|jpeg|bmp)$/ then
       "<img src=\"#{url}\" />"
     else
-      if scheme != 'link' and %r%\A([./]*+)(.*?\.)(rb|rdoc|md)(?=\z|#)%i =~ url
-        url = "#$1#{$2.tr('.', '_')}#$3.html#{$'}"
+      if scheme != 'link' and %r%\A((?!https?:).*/)([^/]+)\.(rb|rdoc|md)(?=\z|#)%i =~ url
+        url = "#$1#{$2.tr('.', '_')}_#$3.html#$'"
       end
 
       text = text.sub %r%^#{scheme}:/*%i, ''
diff --git a/test/rdoc/test_rdoc_markup_to_html.rb b/test/rdoc/test_rdoc_markup_to_html.rb
index f7887f081b..aa36fb77c4 100644
--- a/test/rdoc/test_rdoc_markup_to_html.rb
+++ b/test/rdoc/test_rdoc_markup_to_html.rb
@@ -741,33 +741,33 @@ def test_gen_url_ssl_image_url
   def test_gen_url_rdoc_file
     assert_equal '<a href="doc/example_rdoc.html">example</a>',
                  @to.gen_url('doc/example.rdoc', 'example')
-    assert_equal '<a href="../ex_doc/example_rdoc.html">example</a>',
+    assert_equal '<a href="../ex.doc/example_rdoc.html">example</a>',
                  @to.gen_url('../ex.doc/example.rdoc', 'example')
     assert_equal '<a href="doc/example_rdoc.html#label-one">example</a>',
                  @to.gen_url('doc/example.rdoc#label-one', 'example')
-    assert_equal '<a href="../ex_doc/example_rdoc.html#label-two">example</a>',
+    assert_equal '<a href="../ex.doc/example_rdoc.html#label-two">example</a>',
                  @to.gen_url('../ex.doc/example.rdoc#label-two', 'example')
   end
 
   def test_gen_url_md_file
     assert_equal '<a href="doc/example_md.html">example</a>',
                  @to.gen_url('doc/example.md', 'example')
-    assert_equal '<a href="../ex_doc/example_md.html">example</a>',
+    assert_equal '<a href="../ex.doc/example_md.html">example</a>',
                  @to.gen_url('../ex.doc/example.md', 'example')
     assert_equal '<a href="doc/example_md.html#label-one">example</a>',
                  @to.gen_url('doc/example.md#label-one', 'example')
-    assert_equal '<a href="../ex_doc/example_md.html#label-two">example</a>',
+    assert_equal '<a href="../ex.doc/example_md.html#label-two">example</a>',
                  @to.gen_url('../ex.doc/example.md#label-two', 'example')
   end
 
   def test_gen_url_rb_file
     assert_equal '<a href="doc/example_rb.html">example</a>',
                  @to.gen_url('doc/example.rb', 'example')
-    assert_equal '<a href="../ex_doc/example_rb.html">example</a>',
+    assert_equal '<a href="../ex.doc/example_rb.html">example</a>',
                  @to.gen_url('../ex.doc/example.rb', 'example')
     assert_equal '<a href="doc/example_rb.html#label-one">example</a>',
                  @to.gen_url('doc/example.rb#label-one', 'example')
-    assert_equal '<a href="../ex_doc/example_rb.html#label-two">example</a>',
+    assert_equal '<a href="../ex.doc/example_rb.html#label-two">example</a>',
                  @to.gen_url('../ex.doc/example.rb#label-two', 'example')
   end