Documentation.

git-svn-id: svn://vcs.exim.org/pcre/code/trunk@857 2f5784b3-3f2a-0410-8824-cb99058d5e15

1 files changed, 17 insertions, 3 deletions

diff --git a/NEWS b/NEWS
index b792f87..58b025b 100644
--- a/NEWS
+++ b/NEWS
@@ -5,9 +5,23 @@ Release 8.30
 ------------
 
 Release 8.30 introduces a major new feature: support for 16-bit character
-strings, compiled as a separate library. There are no new features in the 8-bit
-library, but some bugs have been mended. However, note that the pcre_info()
-function, which has been obsolete for over 10 years, has been removed.
+strings, compiled as a separate library. There are a few changes to the 
+8-bit library, in addition to some bug fixes.
+
+. The pcre_info() function, which has been obsolete for over 10 years, has
+  been removed.
+
+. When a compiled pattern was saved to a file and later reloaded on a host
+  with different endianness, PCRE used automatically to swap the bytes in some 
+  of the data fields. With the advent of the 16-bit library, where more of this
+  swapping is needed, it is no longer done automatically. Instead, the bad
+  endianness is detected and a specific error is given. The user can then call
+  a new function called pcre_pattern_to_host_byte_order() (or an equivalent
+  16-bit function) to do the swap.
+  
+. In UTF-8 mode, the values 0xd800 to 0xdfff are not legal Unicode
+  code points and are now faulted. (They are the so-called "surrogates"
+  that are reserved for coding high values in UTF-16.)
 
 
 Release 8.21 12-Dec-2011