===================================================================
RCS file: /cvs/mandoc/term_ascii.c,v
retrieving revision 1.22
retrieving revision 1.24
diff -u -p -r1.22 -r1.24
--- mandoc/term_ascii.c	2014/03/23 11:25:26	1.22
+++ mandoc/term_ascii.c	2014/03/30 21:28:01	1.24
@@ -1,6 +1,7 @@
-/*	$Id: term_ascii.c,v 1.22 2014/03/23 11:25:26 schwarze Exp $ */
+/*	$Id: term_ascii.c,v 1.24 2014/03/30 21:28:01 schwarze Exp $ */
 /*
  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2014 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
@@ -57,6 +58,7 @@ static	void		  ascii_begin(struct termp *);
 static	void		  ascii_end(struct termp *);
 static	void		  ascii_endline(struct termp *);
 static	void		  ascii_letter(struct termp *, int);
+static	void		  ascii_setwidth(struct termp *, int, size_t);
 
 #ifdef	USE_WCHAR
 static	void		  locale_advance(struct termp *, size_t);
@@ -75,7 +77,7 @@ ascii_init(enum termenc enc, char *outopts)
 	p = mandoc_calloc(1, sizeof(struct termp));
 
 	p->tabwidth = 5;
-	p->defrmargin = 78;
+	p->defrmargin = p->lastrmargin = 78;
 
 	p->begin = ascii_begin;
 	p->end = ascii_end;
@@ -86,6 +88,7 @@ ascii_init(enum termenc enc, char *outopts)
 	p->advance = ascii_advance;
 	p->endline = ascii_endline;
 	p->letter = ascii_letter;
+	p->setwidth = ascii_setwidth;
 	p->width = ascii_width;
 
 #ifdef	USE_WCHAR
@@ -155,6 +158,21 @@ locale_alloc(char *outopts)
 {
 
 	return(ascii_init(TERMENC_LOCALE, outopts));
+}
+
+static void
+ascii_setwidth(struct termp *p, int iop, size_t width)
+{
+
+	p->rmargin = p->defrmargin;
+	if (0 < iop)
+		p->defrmargin += width;
+	else if (0 > iop)
+		p->defrmargin -= width;
+	else
+		p->defrmargin = width ? width : p->lastrmargin;
+	p->lastrmargin = p->rmargin;
+	p->rmargin = p->maxrmargin = p->defrmargin;
 }
 
 /* ARGSUSED */