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-rw-r--r--lib/rdoc/top_level.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/rdoc/top_level.rb b/lib/rdoc/top_level.rb
index f4952fb6ff..7b291ade80 100644
--- a/lib/rdoc/top_level.rb
+++ b/lib/rdoc/top_level.rb
@@ -226,7 +226,7 @@ class RDoc::TopLevel < RDoc::Context
def page_name
basename = File.basename @relative_name
- basename =~ /\.[^.]*$/
+ basename =~ /\.(rb|rdoc|txt|md)$/i
$` || basename
end