checkin

1 files changed, 1 insertions, 0 deletions

diff --git a/include/libunicode.h b/include/libunicode.h
index 773f9ab..d6618eb 100644
--- a/include/libunicode.h
+++ b/include/libunicode.h
@@ -16,6 +16,7 @@ typedef uint32 rune;
  */
 int     utf8·len(char *s);       // returns number of runes for s
 int     utf8·runelen(rune r);    // returns number of bytes for rune
+int     utf8·runewidth(rune r);  // returns number of printed columns for rune
 
 int     utf8·decode(char *, rune *);       // decode 1 rune from char stream, store into rune, return number of bytes
 int     utf8·encode(rune *, char *);       // encode 1 rune from rune stream, store into char, return number of bytes