[m-rev.] for post-commit review: announce unicode escape sequences

[Julien Fischer]

For post-commit review by anyone.

Branches: main

NEWS:
 	Announce the \u and \U escape sequences for Unicode characters
 	in string literals.

Julien.

Index: NEWS
===================================================================
RCS file: /home/mercury/mercury1/repository/mercury/NEWS,v
retrieving revision 1.582
diff -u -r1.582 NEWS
--- NEWS	2 Jun 2011 07:20:53 -0000	1.582
+++ NEWS	5 Jun 2011 14:08:59 -0000
@@ -8,6 +8,12 @@

  * The `char' type now represents a Unicode code point.

+* Unicode characters can now be encoded in string literals using an
+  escape sequence.  The escape sequence \uXXXX (or \UXXXXXXXX), where XXXX
+  (or XXXXXXXX) is a Unicode character code in hexadecimal, is replaced with
+  the corresponding Unicode character.  The UTF-8 encoding is used to represent
+  the Unicode character.
+
  Changes to the Mercury standard library:

  * We have improved Unicode support in the standard library.

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