Re: GNU sed version 4.2.1: on OS X, C locale gets aliased to UTF-8

[Paul Eggert]

On 09/16/2012 07:46 AM, Max Horn wrote:

> so, any news on this?

No, and it's been some time, so I pushed the July patch, as follows.
Thanks for following up on this.


localcharset: work around Mac OS X bug with UTF-8 and MB_CUR_MAX
* lib/localcharset.c (locale_charset) [DARWIN7]:
Return "ASCII" if the system reports "UTF-8" and MB_CUR_MAX <= 1,
as these two values are incompatible.  Problem reported by Max Horn.
For more discussion, please see
<http://lists.gnu.org/archive/html/bug-gnulib/2012-09/msg00061.html>.
diff --git a/lib/localcharset.c b/lib/localcharset.c
index 54a2432..1a94042 100644
--- a/lib/localcharset.c
+++ b/lib/localcharset.c
@@ -542,5 +542,12 @@ locale_charset (void)
   if (codeset[0] == '\0')
     codeset = "ASCII";

+#ifdef DARWIN7
+  /* Mac OS X sets MB_CUR_MAX to 1 when LC_ALL=C, and "UTF-8"
+     (the default codeset) does not work when MB_CUR_MAX is 1.  */
+  if (strcmp (codeset, "UTF-8") == 0 && MB_CUR_MAX <= 1)
+    codeset = "ASCII";
+#endif
+
   return codeset;
 }