1.1 --- a/src/Pure/System/build.ML	Tue Jul 24 12:28:20 2012 +0200
     1.2 +++ b/src/Pure/System/build.ML	Tue Jul 24 12:38:33 2012 +0200
     1.3 @@ -24,7 +24,8 @@
     1.4          (Options.int options "parallel_proofs_threshold")
     1.5      |> Unsynchronized.setmp Multithreading.trace (Options.int options "threads_trace")
     1.6      |> Unsynchronized.setmp Multithreading.max_threads (Options.int options "threads")
     1.7 -    |> Options.bool options "no_document" ? Present.no_document
     1.8 +    |> (case Options.string options "document" of "" => false | "false" => false | _ => true) ?
     1.9 +        Present.no_document
    1.10      |> Unsynchronized.setmp quick_and_dirty (Options.bool options "quick_and_dirty");
    1.11  
    1.12  fun use_theories (options, thys) =