utf8.c: add utf8_strnwidth() with the ability to skip ansi sequences

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/utf8.h b/utf8.h
index 1f8ecad..d3da96f 100644
--- a/utf8.h
+++ b/utf8.h
@@ -4,6 +4,7 @@
 typedef unsigned int ucs_char_t;  /* assuming 32bit int */
 
 int utf8_width(const char **start, size_t *remainder_p);
+int utf8_strnwidth(const char *string, int len, int skip_ansi);
 int utf8_strwidth(const char *string);
 int is_utf8(const char *text);
 int is_encoding_utf8(const char *name);