From b5db9b8a314249adee021ba6a426c6a2ebbc6804 Mon Sep 17 00:00:00 2001
From: aycabta <aycabta@gmail.com>
Date: Tue, 4 Aug 2020 15:46:39 +0900
Subject: [ruby/rdoc] Support full filename to make a link for a text file

https://github.com/ruby/rdoc/commit/41db49c485
---
 lib/rdoc/cross_reference.rb  | 2 +-
 lib/rdoc/store.rb            | 2 +-
 test/rdoc/test_rdoc_store.rb | 8 ++++++++
 3 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/rdoc/cross_reference.rb b/lib/rdoc/cross_reference.rb
index 2785852387..99a64cd99a 100644
--- a/lib/rdoc/cross_reference.rb
+++ b/lib/rdoc/cross_reference.rb
@@ -173,7 +173,7 @@ class RDoc::CrossReference
           end unless ref
 
     # Try a page name
-    ref = @store.page name if not ref and name =~ /^\w+$/
+    ref = @store.page name if not ref and name =~ /^[\w.]+$/
 
     ref = nil if RDoc::Alias === ref # external alias, can't link to it
 
diff --git a/lib/rdoc/store.rb b/lib/rdoc/store.rb
index 05d8383c86..5ba671ca1b 100644
--- a/lib/rdoc/store.rb
+++ b/lib/rdoc/store.rb
@@ -723,7 +723,7 @@ class RDoc::Store
 
   def page name
     @text_files_hash.each_value.find do |file|
-      file.page_name == name
+      file.page_name == name or file.base_name == name
     end
   end
 
diff --git a/test/rdoc/test_rdoc_store.rb b/test/rdoc/test_rdoc_store.rb
index 076b8e7d4e..82340e6b7a 100644
--- a/test/rdoc/test_rdoc_store.rb
+++ b/test/rdoc/test_rdoc_store.rb
@@ -611,6 +611,14 @@ class TestRDocStore < XrefTestCase
     assert_equal page, @store.page('PAGE')
   end
 
+  def test_page_with_extension
+    page = @store.add_file 'PAGE.txt', parser: RDoc::Parser::Simple
+
+    assert_nil @store.page 'no such page'
+
+    assert_equal page, @store.page('PAGE.txt')
+  end
+
   def test_save
     FileUtils.mkdir_p @tmpdir
 
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