===================================================================
RCS file: /cvs/mandoc/term_ascii.c,v
retrieving revision 1.64
retrieving revision 1.65
diff -u -p -r1.64 -r1.65
--- mandoc/term_ascii.c	2018/11/28 14:23:06	1.64
+++ mandoc/term_ascii.c	2020/09/06 14:45:22	1.65
@@ -1,7 +1,7 @@
-/*	$Id: term_ascii.c,v 1.64 2018/11/28 14:23:06 schwarze Exp $ */
+/* $Id: term_ascii.c,v 1.65 2020/09/06 14:45:22 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2014, 2015, 2017, 2018 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2014,2015,2017,2018,2020 Ingo Schwarze <schwarze@openbsd.org>
  *
  * Permission to use, copy, modify, and distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -232,7 +232,10 @@ ascii_endline(struct termp *p)
 {
 
 	p->line++;
-	p->tcol->offset -= p->ti;
+	if ((int)p->tcol->offset > p->ti)
+		p->tcol->offset -= p->ti;
+	else
+		p->tcol->offset = 0;
 	p->ti = 0;
 	putchar('\n');
 }
@@ -390,7 +393,10 @@ locale_endline(struct termp *p)
 {
 
 	p->line++;
-	p->tcol->offset -= p->ti;
+	if ((int)p->tcol->offset > p->ti)
+		p->tcol->offset -= p->ti;
+	else 
+		p->tcol->offset = 0;
 	p->ti = 0;
 	putwchar(L'\n');
 }