Further tweaks to perluniintro.pod

[p5sagit/p5-mst-13.2.git] / locale.c

diff --git a/locale.c b/locale.c
index 02d546d..0986614 100644 (file)
--- a/locale.c
+++ b/locale.c
@@ -29,6 +29,8 @@
 #   include <langinfo.h>
 #endif
 
+#include "reentr.h"
+
 /*
  * Standardize the locale name from a string returned by 'setlocale'.
  *
@@ -471,7 +473,19 @@ Perl_init_i18nl10n(pTHX_ int printwarn)
 
 #endif /* USE_LOCALE */
 
+#ifdef USE_PERLIO
     {
+      /* Set PL_wantutf8 to TRUE if using PerlIO _and_
+        any of the following are true:
+        - nl_langinfo(CODESET) contains /^utf-?8/i
+        - $ENV{LANGUAGE} contains /^utf-?8/i (only if using glibc)
+        - $ENV{LC_CALL} contains /^utf-?8/i
+        - $ENV{LC_CTYPE} contains /^utf-?8/i
+        - $ENV{LANG} contains /^utf-?8/i
+        If PL_wantutf8 is true, perl.c:S_parse_body()
+        will turn on the PerlIO :utf8 discipline on STDIN, STDOUT,
+        STDERR, _and_ the default open discipline.
+      */
         bool wantutf8 = FALSE;
         char *codeset = NULL;
 #if defined(HAS_NL_LANGINFO) && defined(CODESET)
@@ -506,6 +520,7 @@ Perl_init_i18nl10n(pTHX_ int printwarn)
         if (wantutf8)
              PL_wantutf8 = TRUE;
     }
+#endif
 
 #ifdef USE_LOCALE_CTYPE
     if (curctype != NULL)