Another refactor

renderers/markdown.moon

@@ -15,7 +15,8 @@ write_exec = (input, cmd, ...) ->
   with handle\write input
     handle\close!
 
-convert = (md_source) =>
+convert = =>
+  (md_source) ->
     markup_filename = os.tmpname!
     write_exec md_source, @cmd, markup_filename
     Path.read_file markup_filename
@@ -23,9 +24,9 @@ convert = (md_source) =>
 class PandocRenderer extends require "sitegen.renderers.markdown"
   unescape_cosmo = @unescape_cosmo
   escape_cosmo = @escape_cosmo
-  pandoc = (md_source) -> convert @, md_source
+  pandoc = convert @
 
-  @cmd: "pandoc >"
+  cmd: "pandoc >"
 
   render: (page, md_source) =>
     md_source = page\pipe "renderer.markdown.pre_render", md_source