1 files changed, 6 insertions, 0 deletions
diff --git a/support/localeinfo.h b/support/localeinfo.h
index a5140164..c827a2bf 100644
--- a/support/localeinfo.h
+++ b/support/localeinfo.h
@@ -28,6 +28,12 @@ struct localeinfo
   /* MB_CUR_MAX > 1.  */
   bool multibyte;
 
+  /* The locale is simple, like the C locale.  These locales can be
+     processed more efficiently, as they are single-byte, their native
+     character set is in collating-sequence order, and they do not
+     have multi-character collating elements.  */
+  bool simple;
+
   /* The locale uses UTF-8.  */
   bool using_utf8;