===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/html.c,v
retrieving revision 1.149
retrieving revision 1.150
diff -c -r1.149 -r1.150
*** src/usr.bin/mandoc/html.c	2022/07/06 14:27:55	1.149
--- src/usr.bin/mandoc/html.c	2022/08/09 11:21:50	1.150
***************
*** 1,4 ****
! /* $OpenBSD: html.c,v 1.149 2022/07/06 14:27:55 schwarze Exp $ */
  /*
   * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
   * Copyright (c) 2011-2015, 2017-2021 Ingo Schwarze <schwarze@openbsd.org>
--- 1,4 ----
! /* $OpenBSD: html.c,v 1.150 2022/08/09 11:21:50 schwarze Exp $ */
  /*
   * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
   * Copyright (c) 2011-2015, 2017-2021 Ingo Schwarze <schwarze@openbsd.org>
***************
*** 401,410 ****
  	 * In addition, reserve '~' for ordinal suffixes.
  	 */
  
! 	for (cp = buf; *cp != '\0'; cp++)
! 		if (isalnum((unsigned char)*cp) == 0 &&
  		    strchr("!$&'()*+,-./:;=?@_", *cp) == NULL)
  			*cp = '_';
  
  	if (unique == 0)
  		return buf;
--- 401,413 ----
  	 * In addition, reserve '~' for ordinal suffixes.
  	 */
  
! 	for (cp = buf; *cp != '\0'; cp++) {
! 		if (*cp == ASCII_HYPH)
! 			*cp = '-';
! 		else if (isalnum((unsigned char)*cp) == 0 &&
  		    strchr("!$&'()*+,-./:;=?@_", *cp) == NULL)
  			*cp = '_';
+ 	}
  
  	if (unique == 0)
  		return buf;