From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 15 Jan 1999 16:24:11 +0000 (+0000)
Subject: Update.
X-Git-Tag: upstream/2.30~27718
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=37a87f834a459f6136ff44c7887b013d1ae0f6be;p=external%2Fglibc.git

Update.

	Improve mbsinit example.
---

diff --git a/ChangeLog b/ChangeLog
index db0ef90..1da9971 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -5,6 +5,7 @@
 
 	* manual/charset.texi: More misspelling fixes.
 	Reported by Tom Tromey <tromey@cygnus.com>.
+	Improve mbsinit example.
 
 	* sysdeps/unix/sysv/linux/vfork.c: Removed.
 	* sysdeps/unix/sysv/linux/i386/vfork.S: New file.
diff --git a/manual/charset.texi b/manual/charset.texi
index 1242cc0..268cce1 100644
--- a/manual/charset.texi
+++ b/manual/charset.texi
@@ -71,7 +71,7 @@ As shown in some other part of this manual,
 there exists a completely new family of functions which can handle texts
 of this kind in memory.  The most commonly used character set for such
 internal wide character representations are Unicode and @w{ISO 10646}.
-The former is a subset of the later and used when wide characters are
+The former is a subset of the latter and used when wide characters are
 chosen to by 2 bytes (@math{= 16} bits) wide.  The standard names of the
 @cindex UCS2
 @cindex UCS4
@@ -501,6 +501,8 @@ is declared in @file{wchar.h}.
 
 Code using this function often looks similar to this:
 
+@c Fix the example to explicitly say how to generate the escape sequence
+@c to restore the initial state.
 @smallexample
 @{
   mbstate_t state;
@@ -510,12 +512,23 @@ Code using this function often looks similar to this:
   if (! mbsinit (&state))
     @{
       /* @r{Emit code to return to initial state.}  */
-      fputs ("@r{whatever needed}", fp);
+      const char empty[] = "";
+      const char **srcp = &empty;
+      wcsrtombs (outbuf, &srcp, outbuflen, &state);
     @}
   ...
 @}
 @end smallexample
 
+The code to emit the escape sequence to get back to the initial state is
+interesting.  The @code{wcsrtombs} function can be used to determine the
+necessary output code (@pxref{Converting Strings}).  Please note that on
+GNU systems it is not necessary to perform this extra action for the
+conversion from multibyte text ot wide character text since the wide
+character encoding is not stateful.  But there is nothing mentioned in
+any standard which prohibits making @code{wchar_t} using a stateful
+encoding.
+
 @node Converting a Character
 @subsection Converting Single Characters