PR#5497: better handling of special characters in printed code

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@12177 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

ocamldoc/odoc_latex.ml

@@ -86,77 +86,87 @@ class text =
         "\\"^sec^"{"^s^"}\n"
       with Not_found -> s
 
-    (** Associations of strings to subsitute in latex code. *)
-    val mutable subst_strings = [
-      ("MAXENCE"^"ZZZ", "\\$");
-      ("MAXENCE"^"YYY", "\\&");
-      ("MAXENCE"^"XXX", "{\\textbackslash}") ;
-      ("à", "\\`a") ;
-      ("â", "\\^a") ;
-      ("é", "\\'e") ;
-      ("è", "\\`e") ;
-      ("ê", "\\^e") ;
-      ("ë", "\\\"e") ;
-      ("ç", "\\c{c}") ;
-      ("ô", "\\^o") ;
-      ("ö", "\\\"o") ;
-      ("î", "\\^i") ;
-      ("ï", "\\\"i") ;
-      ("ù", "\\`u") ;
-      ("û", "\\^u") ;
-      ("%", "\\%") ;
-      ("_", "\\_");
-      ("\\.\\.\\.", "$\\ldots$");
-      ("~", "\\~{}");
-      ("#", "\\verb`#`");
-      ("}", "\\}");
-      ("{", "\\{");
-      ("&", "\\&");
-      (">", "$>$");
-      ("<", "$<$");
-      ("=", "$=$");
-      (">=", "$\\geq$");
-      ("<=", "$\\leq$");
-      ("->", "$\\rightarrow$") ;
-      ("<-", "$\\leftarrow$");
-      ("|", "\\textbar ");
-      ("\\^", "\\textasciicircum ") ;
-      ("\\.\\.\\.", "$\\ldots$");
-      ("\\\\", "MAXENCE"^"XXX") ;
-      ("&", "MAXENCE"^"YYY") ;
-      ("\\$", "MAXENCE"^"ZZZ");
-    ]
-
-    val mutable subst_strings_simple =
+    (** Associations of strings to substitute in latex code. *)
+    val subst_strings = List.map (fun (x, y) -> (Str.regexp x, y))
       [
-        ("MAXENCE"^"XXX", "{\\textbackslash}") ;
-        "}", "\\}" ;
-        "{", "\\{" ;
-        ("\\\\", "MAXENCE"^"XXX") ;
+        "\001", "\001\002";
+        "\\\\", "\001b";
+
+        "{", "\\\\{";
+        "}", "\\\\}";
+        "\\$", "\\\\$";
+        "\\^", "{\\\\textasciicircum}";
+        "à", "\\\\`a";
+        "â", "\\\\^a";
+        "é", "\\\\'e";
+        "è", "\\\\`e";
+        "ê", "\\\\^e";
+        "ë", "\\\\\"e";
+        "ç", "\\\\c{c}";
+        "ô", "\\\\^o";
+        "ö", "\\\\\"o";
+        "î", "\\\\^i";
+        "ï", "\\\\\"i";
+        "ù", "\\\\`u";
+        "û", "\\\\^u";
+        "%", "\\\\%";
+        "_", "\\\\_";
+        "~", "\\\\~{}";
+        "#", "{\\char35}";
+        "->", "$\\\\rightarrow$";
+        "<-", "$\\\\leftarrow$";
+        ">=", "$\\\\geq$";
+        "<=", "$\\\\leq$";
+        ">", "$>$";
+        "<", "$<$";
+        "=", "$=$";
+        "|", "{\\\\textbar}";
+        "\\.\\.\\.", "$\\\\ldots$";
+        "&", "\\\\&";
+
+        "\001b", "{\\\\char92}";
+        "\001\002", "\001";
       ]
 
-    val mutable subst_strings_code = [
-      ("MAXENCE"^"ZZZ", "\\$");
-      ("MAXENCE"^"YYY", "\\&");
-      ("MAXENCE"^"XXX", "{\\textbackslash}") ;
-      ("%", "\\%") ;
-      ("_", "\\_");
-      ("~", "\\~{}");
-      ("#", "\\verb`#`");
-      ("}", "\\}");
-      ("{", "\\{");
-      ("&", "\\&");
-      ("\\^", "\\textasciicircum ") ;
-      ("&", "MAXENCE"^"YYY") ;
-      ("\\$", "MAXENCE"^"ZZZ") ;
-      ("\\\\", "MAXENCE"^"XXX") ;
-     ]
+    val subst_strings_simple = List.map (fun (x, y) -> (Str.regexp x, y))
+      [
+        "\001", "\001\002";
+        "\\\\", "\001b";
+        "{", "\001l";
+
+        "}", "{\\\\char125}";
+        "'", "{\\\\textquotesingle}";
+        "`", "{\\\\textasciigrave}";
+
+        "\001b", "{\\\\char92}";
+        "\001l", "{\\\\char123}";
+        "\001\002", "\001";
+      ]
+
+    val subst_strings_code = List.map (fun (x, y) -> (Str.regexp x, y))
+      [
+        "\001", "\001\002";
+        "\\\\", "\001b";
+        "{", "\001l";
+
+        "}", "{\\\\char125}";
+        "'", "{\\\\textquotesingle}";
+        "`", "{\\\\textasciigrave}";
+        "%", "\\\\%";
+        "_", "\\\\_";
+        "~", "{\\\\char126}";
+        "#", "{\\\\char35}";
+        "&", "\\\\&";
+        "\\$", "\\\\$";
+        "\\^", "{\\\\char94}";
+
+        "\001b", "{\\\\char92}";
+        "\001l", "{\\\\char123}";
+        "\001\002", "\001";
+      ]
 
     method subst l s =
-      List.fold_right
-        (fun (s, s2) -> fun acc -> Str.global_replace (Str.regexp s) s2 acc)
-        l
-        s
+      List.fold_left (fun acc (re, st) -> Str.global_replace re st acc) s l
 
     (** Escape the strings which would clash with LaTeX syntax. *)
     method escape s = self#subst subst_strings s
@@ -1112,6 +1122,7 @@ class latex =
       ps fmt "\\documentclass[11pt]{article} \n";
       ps fmt "\\usepackage[latin1]{inputenc} \n";
       ps fmt "\\usepackage[T1]{fontenc} \n";
+      ps fmt "\\usepackage{textcomp}\n";
       ps fmt "\\usepackage{fullpage} \n";
       ps fmt "\\usepackage{url} \n";
       ps fmt "\\usepackage{ocamldoc}\n";