On 11/18/2013 8:46 AM, Joe Politz
      wrote:
    
      In src/lang/pretty.rkt:
      > @@ -237,8 +237,15 @@
>  
>      [(s-paren _ e) (format "(~a)" (pretty e))]
>  
> +    [(s-hint-exp _ h e) (format "HINTS(~a)~a" (string-join (map pretty-hint h) ",") (pretty e))]

      Well, ast.arr prints with a comment, right? That
        seems helpful for debugging.
    
    I could reformat this, then, to look like a comment...
      I don't view HINTS(stuff) as a faithful
        representation of the AST, since we don't have concrete syntax
        for this...
    
    Non sequitur -- just because something doesn't have a *concrete*
    syntax doesn't mean it's not a faithful representation of the
    *abstract* syntax tree... :)
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