X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Fcomponents%2Fng_kernel%2FnCicPp.ml;h=62dc58e4ece81720642de8bd74977029e8f691b9;hb=03f203779699068d517f298fe31b511821cdd561;hp=f608acc15109f913c4f92a428a8d0cc5452887e9;hpb=8e40e8ece45938cb8b35d2a997bf50786af5f4df;p=helm.git

diff --git a/helm/software/components/ng_kernel/nCicPp.ml b/helm/software/components/ng_kernel/nCicPp.ml
index f608acc15..62dc58e4e 100644
--- a/helm/software/components/ng_kernel/nCicPp.ml
+++ b/helm/software/components/ng_kernel/nCicPp.ml
@@ -180,11 +180,14 @@ let ppterm ~formatter:f ~context ~subst ~metasenv:_ ?(inside_fix=false) t =
 ;;
 
 let on_buffer f t = 
+ try
   let buff = Buffer.create 100 in
   let formatter = F.formatter_of_buffer buff in
   f ~formatter:formatter t;
   F.fprintf formatter "@?";
   Buffer.contents buff
+ with Failure m ->
+  "[[Unprintable: " ^ m ^ "]]"
 ;;
 
 let ppterm ~formatter ~context ~subst ~metasenv ?(margin=80) ?inside_fix t =