===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/roff_escape.c,v
retrieving revision 1.5
retrieving revision 1.6
diff -c -r1.5 -r1.6
*** src/usr.bin/mandoc/roff_escape.c	2022/05/31 20:21:40	1.5
--- src/usr.bin/mandoc/roff_escape.c	2022/06/01 23:20:19	1.6
***************
*** 1,4 ****
! /* $OpenBSD: roff_escape.c,v 1.5 2022/05/31 20:21:40 schwarze Exp $ */
  /*
   * Copyright (c) 2011, 2012, 2013, 2014, 2015, 2017, 2018, 2020, 2022
   *               Ingo Schwarze <schwarze@openbsd.org>
--- 1,4 ----
! /* $OpenBSD: roff_escape.c,v 1.6 2022/06/01 23:20:19 schwarze Exp $ */
  /*
   * Copyright (c) 2011, 2012, 2013, 2014, 2015, 2017, 2018, 2020, 2022
   *               Ingo Schwarze <schwarze@openbsd.org>
***************
*** 124,129 ****
--- 124,132 ----
  		rval = ESCAPE_IGNORE;
  		goto out;
  
+ 	case '\0':
+ 		iendarg = --iend;
+ 		/* FALLTHROUGH */
  	case '\\':
  	default:
  		iarg--;