Add the -b option (break at byte position, not column number) and the -s

option (try to break at word bounaries) for SUSv3 conformance.

Partially based on the NetBSD version, with the following changes:
 - style(9)
 - break on <blank>s, not spaces, per POSIX (and GNU)
 - when looking for last space on line, search backwards instead of
   forwards; less comparisons needed this way.
 - use LINE_MAX macro instead of a magic number and a comment saying it is
   LINE_MAX.

PR:		36245
Reviewed by:	mike
Obtained from:	NetBSD (partially)

1 files changed, 15 insertions, 1 deletions

diff --git a/usr.bin/fold/fold.1 b/usr.bin/fold/fold.1
index 63a52f2..071f39a 100644
--- a/usr.bin/fold/fold.1
+++ b/usr.bin/fold/fold.1
@@ -32,7 +32,7 @@
 .\"	@(#)fold.1	8.1 (Berkeley) 6/6/93
 .\" $FreeBSD$
 .\"
-.Dd June 6, 1993
+.Dd April 17, 2002
 .Dt FOLD 1
 .Os
 .Sh NAME
@@ -40,6 +40,7 @@
 .Nd "fold long lines for finite width output device"
 .Sh SYNOPSIS
 .Nm
+.Op Fl bs
 .Op Fl w Ar width
 .Op Ar
 .Sh DESCRIPTION
@@ -50,6 +51,14 @@ breaking the lines to have a maximum of 80 characters.
 .Pp
 The following option is available:
 .Bl -tag -width indent
+.It Fl b
+Count
+.Ar width
+in bytes rather than column positions.
+.It Fl s
+Fold line after the last blank character within the first
+.Ar width
+column positions (or bytes).
 .It Fl w Ar width
 Specify a line width to use instead of the default 80 characters.
 .Ar Width
@@ -61,5 +70,10 @@ before using
 .El
 .Sh SEE ALSO
 .Xr expand 1
+.Sh STANDARDS
+The
+.Nm
+utility conforms to
+.St -p1003.1-2001 .
 .Sh BUGS
 If underlining is present it may be messed up by folding.