===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/mdoc_markdown.c,v
retrieving revision 1.28
retrieving revision 1.29
diff -u -r1.28 -r1.29
--- src/usr.bin/mandoc/mdoc_markdown.c	2018/12/03 21:00:06	1.28
+++ src/usr.bin/mandoc/mdoc_markdown.c	2018/12/15 19:30:19	1.29
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mdoc_markdown.c,v 1.28 2018/12/03 21:00:06 schwarze Exp $ */
+/*	$OpenBSD: mdoc_markdown.c,v 1.29 2018/12/15 19:30:19 schwarze Exp $ */
 /*
  * Copyright (c) 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
  *
@@ -588,6 +588,9 @@
 				break;
 			case ESCAPE_SPECIAL:
 				uc = mchars_spec2cp(seq, sz);
+				break;
+			case ESCAPE_UNDEF:
+				uc = *seq;
 				break;
 			case ESCAPE_DEVICE:
 				md_rawword("markdown");