X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=components%2Fcontent_pres%2FboxPp.ml;h=b9bb9fbbd5badc06ef55a36ca418471731559db2;hb=9dc727beb31286d228834cb6bce7afa242363477;hp=7a2fa9912f31144cb135e72441fe03f7b1bfd6fc;hpb=7f2444c2670cadafddd8785b687ef312158376b0;p=helm.git

diff --git a/components/content_pres/boxPp.ml b/components/content_pres/boxPp.ml
index 7a2fa9912..b9bb9fbbd 100644
--- a/components/content_pres/boxPp.ml
+++ b/components/content_pres/boxPp.ml
@@ -31,7 +31,7 @@ module Pres = Mpresentation
 
 let string_space = " "
 let string_space_len = String.length string_space
-let string_indent = string_space
+let string_indent = (* string_space *) ""
 let string_indent_len = String.length string_indent
 let string_ink = "##"
 let string_ink_len = String.length string_ink
@@ -93,7 +93,7 @@ let fixed_rendering s =
   let s_len = String.length s in
   (fun _ -> s_len, [s])
 
-let render_to_strings size markup =
+let render_to_strings choose_action size markup =
   let max_size = max_int in
   let rec aux_box =
     function
@@ -101,7 +101,7 @@ let render_to_strings size markup =
     | Box.Space _ -> fixed_rendering string_space
     | Box.Ink _ -> fixed_rendering string_ink
     | Box.Action (_, []) -> assert false
-    | Box.Action (_, hd :: _) -> aux_box hd
+    | Box.Action (_, l) -> aux_box (choose_action l)
     | Box.Object (_, o) -> aux_mpres o
     | Box.H (attrs, children) ->
         let spacing = want_spacing attrs in
@@ -193,13 +193,14 @@ let render_to_strings size markup =
     | Pres.Mgliph (_, s) -> fixed_rendering s
     | Pres.Mo (_, s) ->
         let s =
-          if String.length s > 1 then
-            (* heuristic to guess which operators need to be expanded in their
-             * TeX like format *)
-            Utf8Macro.tex_of_unicode s ^ " "
-          else s
+         if String.length s = 1 && Char.code s.[0] < 128 then
+          s
+         else
+          match Utf8Macro.tex_of_unicode s with
+             Some s -> s ^ " "
+           | None -> s
         in
-        fixed_rendering s
+         fixed_rendering s
     | Pres.Mspace _ -> fixed_rendering string_space
     | Pres.Mrow (attrs, children) ->
         let children' = List.map aux_mpres children in
@@ -236,6 +237,6 @@ let render_to_strings size markup =
   in
   snd (aux_mpres markup size)
 
-let render_to_string size markup =
-  String.concat "\n" (render_to_strings size markup)
+let render_to_string choose_action size markup =
+  String.concat "\n" (render_to_strings choose_action size markup)