===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/tmux/utf8.c,v
retrieving revision 1.42
retrieving revision 1.43
diff -c -r1.42 -r1.43
*** src/usr.bin/tmux/utf8.c	2019/05/23 18:22:13	1.42
--- src/usr.bin/tmux/utf8.c	2019/05/26 17:34:45	1.43
***************
*** 1,4 ****
! /* $OpenBSD: utf8.c,v 1.42 2019/05/23 18:22:13 nicm Exp $ */
  
  /*
   * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
--- 1,4 ----
! /* $OpenBSD: utf8.c,v 1.43 2019/05/26 17:34:45 nicm Exp $ */
  
  /*
   * Copyright (c) 2008 Nicholas Marriott <nicholas.marriott@gmail.com>
***************
*** 409,412 ****
--- 409,432 ----
  		out[slen++] = ' ';
  	out[slen] = '\0';
  	return (out);
+ }
+ 
+ int
+ utf8_cstrhas(const char *s, const struct utf8_data *ud)
+ {
+ 	struct utf8_data	*copy, *loop;
+ 	int			 found = 0;
+ 
+ 	copy = utf8_fromcstr(s);
+ 	for (loop = copy; loop->size != 0; loop++) {
+ 		if (loop->size != ud->size)
+ 			continue;
+ 		if (memcmp(loop->data, ud->data, loop->size) == 0) {
+ 			found = 1;
+ 			break;
+ 		}
+ 	}
+ 	free(copy);
+ 
+ 	return (found);
  }