The \h escape sequence provides another method for moving backwards,

and after that, previously written output gets overwritten, but
overwriting with blanks does *not* erase previously written content.
Yes, manual pages exist that are crazy enough to rely on that...

1 files changed, 2 insertions, 1 deletions

diff --git a/term.h b/term.h
index a4dbdf42..fa51d633 100644
--- a/term.h
+++ b/term.h
@@ -62,7 +62,8 @@ struct	termp {
 	size_t		  maxrmargin;	/* Max right margin. */
 	size_t		  maxcols;	/* Max size of buf. */
 	size_t		  offset;	/* Margin offest. */
-	size_t		  col;		/* Bytes in buf. */
+	size_t		  col;		/* Byte position in buf. */
+	size_t		  lastcol;	/* Bytes in buf. */
 	size_t		  viscol;	/* Chars on current line. */
 	size_t		  trailspace;	/* See termp_flushln(). */
 	size_t		  minbl;	/* Minimum blanks before next field. */