(unibyte_has_multibyte_table): Extern it.

(UNIBYTE_CHAR_HAS_MULTIBYTE_P): New macro.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/character.h b/src/character.h
index ff9e8e00062..c41c5daa906 100644
--- a/src/character.h
+++ b/src/character.h
@@ -77,6 +77,12 @@ extern int unibyte_to_multibyte_table[256];
 #define unibyte_char_to_multibyte(c)    \
   ((c) < 256 ? unibyte_to_multibyte_table[(c)] : (c))
 
+/* Nth element is 1 iff unibyte char N can be mapped to a multibyte
+   char.  */
+extern char unibyte_has_multibyte_table[256];
+
+#define UNIBYTE_CHAR_HAS_MULTIBYTE_P(c) (unibyte_has_multibyte_table[(c)])
+
 /* If C is not ASCII, make it unibyte. */
 #define MAKE_CHAR_UNIBYTE(c)    \
   do {                          \