Provision for unsigned numbers in binary notation.

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@5159 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02

stdlib/scanf.mli

@@ -85,6 +85,7 @@ val bscanf :
    - [u]: reads an unsigned decimal integer.
    - [x] or [X]: reads an unsigned hexadecimal integer.
    - [o]: reads an unsigned octal integer.
+   - [b]: reads an unsigned binary integer.
    - [s]: reads a string argument (by default strings end with a space).
    - [S]: reads a delimited string argument (delimiters and special
      escaped characters follow the lexical conventions of Caml).
@@ -94,17 +95,21 @@ val bscanf :
    - [f], [e], [E], [g], [G], [F]: reads an optionally signed
      floating-point number in decimal notation, in the style [dddd.ddd
      e/E+-dd].
-   - [b], [B]: reads a boolean argument ([true] or [false]).
-   - [ld], [li], [lu], [lx], [lX], [lo]: reads an [int32] argument to
+   - [B]: reads a boolean argument ([true] or [false]).
+   - [ld], [li], [lu], [lx], [lX], [lo], [lb]: reads an [int32] argument to
      the format specified by the second letter (decimal, hexadecimal, etc).
-   - [nd], [ni], [nu], [nx], [nX], [no]: reads a [nativeint] argument to
+   - [nd], [ni], [nu], [nx], [nX], [no], [nb]: reads a [nativeint] argument to
      the format specified by the second letter.
-   - [Ld], [Li], [Lu], [Lx], [LX], [Lo]: reads an [int64] argument to
+   - [Ld], [Li], [Lu], [Lx], [LX], [Lo], [Lb]: reads an [int64] argument to
      the format specified by the second letter.
    - [\[ range \]]: reads characters that matches one of the characters
      mentioned in the range of characters [range] (or not mentioned in
      it, if the range starts with [^]). Returns a [string] that can be
      empty, if no character in the input matches the range.
+     If a closing bracket appears in a range, it must occur as the
+     first character of the range (or just after the [^] in case of
+     range negation); hence [\[\]\]] matches a [\]] character and
+     [\[^\]\]] matches any character that is not [\]].
    - [N]: applies [f] to the number of characters read so far.
    - [%]: matches one [%] character in the input.