===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/roff_escape.c,v
retrieving revision 1.10
retrieving revision 1.11
diff -c -r1.10 -r1.11
*** src/usr.bin/mandoc/roff_escape.c	2022/06/05 13:42:49	1.10
--- src/usr.bin/mandoc/roff_escape.c	2022/06/06 12:09:18	1.11
***************
*** 1,4 ****
! /* $OpenBSD: roff_escape.c,v 1.10 2022/06/05 13:42:49 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 1.11 2022/06/06 12:09:18 schwarze Exp $ */
  /*
   * Copyright (c) 2011, 2012, 2013, 2014, 2015, 2017, 2018, 2020, 2022
   *               Ingo Schwarze <schwarze@openbsd.org>
***************
*** 206,215 ****
  		term = '\b';
  		break;
  	case 'C':
- 		if (buf[iarg] != '\'') {
- 			rval = ESCAPE_ERROR;
- 			goto out;
- 		}
  		rval = ESCAPE_SPECIAL;
  		term = '\b';
  		break;
--- 206,211 ----
***************
*** 391,396 ****
--- 387,397 ----
  		break;
  
  	case ESCAPE_SPECIAL:
+ 		if (argl == 0) {
+ 			err = MANDOCERR_ESC_BADCHAR;
+ 			rval = ESCAPE_ERROR;
+ 			break;
+ 		}
  
  		/*
  		 * The file chars.c only provides one common list of