Handle literal tab characters both in literal context (.Bd -literal)

and outside.  In literal context, tab stops are at each eigth column;
outside, they are at each fifth column.

from OpenBSD mdoc_term.c rev. 1.75;
"commit" kristaps@

1 files changed, 1 insertions, 0 deletions

diff --git a/term.h b/term.h
index b0df752f..043178e4 100644
--- a/term.h
+++ b/term.h
@@ -37,6 +37,7 @@ struct	termp {
 	size_t		  maxrmargin;	/* Max right margin. */
 	size_t		  maxcols;	/* Max size of buf. */
 	size_t		  offset;	/* Margin offest. */
+	size_t		  tabwidth;	/* Distance of tab positions. */
 	size_t		  col;		/* Bytes in buf. */
 	int		  overstep;	/* See termp_flushln(). */
 	int		  flags;