lib/nanoc/data_sources/filesystem.rb in nanoc-4.9.6 vs lib/nanoc/data_sources/filesystem.rb in nanoc-4.9.7

@@ -334,10 +334,10 @@
       if config[:identifier_type] == 'full'
         return Nanoc::Identifier.new(filename)
       end
 
       regex =
-        if filename =~ /(^|\/)index(\.[^\/]+)?$/
+        if /(^|\/)index(\.[^\/]+)?$/.match?(filename)
           allow_periods_in_identifiers? ? /\/?(index)?(\.[^\/\.]+)?$/ : /\/?index(\.[^\/]+)?$/
         else
           allow_periods_in_identifiers? ? /\.[^\/\.]+$/ : /\.[^\/]+$/
         end
       Nanoc::Identifier.new(filename.sub(regex, ''), type: :legacy)