it is now possible to put "\%" in a lexicon file to describer the string "%"

git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/semagramme/libcaml-grew/trunk@8744 7838e531-6607-4d57-9587-6c381814729c

src/grew_types.ml

@@ -447,6 +447,7 @@ module Lex_par = struct
     if line = "" || line.[0] = '%'
     then None
     else
+      let line = Str.global_replace (Str.regexp "\\\\%") "%" line in
       match Str.split (Str.regexp "##") line with
         | [args] when nb_c = 0 ->
           (match Str.split (Str.regexp "#") args with