Evaluate the :ruby filter in the document context.

lib/haml.rb

@@ -555,6 +555,7 @@ $LOAD_PATH << dir unless $LOAD_PATH.include?(dir)
 #             All output sent to <tt>$stdout</tt>, like with +puts+,
 #             is output into the Haml document.
 #             Not available if the <tt>suppress_eval</tt> option is set to true.
+#             The Ruby code is evaluated in the same context as the Haml template.
 #
 # [preserve]  Inserts the filtered text into the template with whitespace preserved.
 #             <tt>preserve</tt>d blocks of text aren't indented,

lib/haml/filters.rb

@@ -146,13 +146,16 @@ module Haml
       include Base
       lazy_require 'stringio'
 
-      def render(text)
-        old_stdout = $stdout
-        $stdout = StringIO.new
-        Object.new.instance_eval(text)
-        old_stdout, $stdout = $stdout, old_stdout
-        old_stdout.pos = 0
-        old_stdout.read
+      def compile(precompiler, text)
+        precompiler.instance_eval do
+          push_silent <<-END.gsub("\n", ';')
+            _haml_old_stdout = $stdout
+            $stdout = StringIO.new(_hamlout.buffer, 'a')
+            #{text}
+            _haml_old_stdout, $stdout = $stdout, _haml_old_stdout
+            _haml_old_stdout.close
+          END
+        end
       end
     end
 

test/haml/templates/filters.haml

@@ -64,6 +64,7 @@
 
 = "Text!"
 
+- var = "Hello"
 :ruby
-  puts "Hello, World!"
-  puts "How are you doing today?"
+  printf "%s, World!\n", var
+  print "How are you doing today?\n"