Change the exit value on errors to be more 4.4BSD like. Use the sum of

errors up to a maximum of 127, then to do not increment anymore,
though programme execution continues.

Use 127 as a maximum because error codes above this are:

1. bad because of signed bugs in programs.
2. used as the traditional shell $? representation of "kill by signal"
   where $? = 128 + signal.

(from deraadt@ and guenther@ respectively)

1 files changed, 4 insertions, 2 deletions

diff --git a/usr.bin/fmt/fmt.1 b/usr.bin/fmt/fmt.1
index c4a83454dff..068e1ecee7d 100644
--- a/usr.bin/fmt/fmt.1
+++ b/usr.bin/fmt/fmt.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: fmt.1,v 1.23 2012/01/15 11:43:45 schwarze Exp $
+.\" $OpenBSD: fmt.1,v 1.24 2012/01/17 04:26:28 lum Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -29,7 +29,7 @@
 .\"
 .\"     @(#)fmt.1	8.1 (Berkeley) 6/6/93
 .\"
-.Dd $Mdocdate: January 15 2012 $
+.Dd $Mdocdate: January 17 2012 $
 .Dt FMT 1
 .Os
 .Sh NAME
@@ -149,6 +149,8 @@ evening the lines:
 .Ex -std
 The latter happens with invalid options, insufficient memory,
 or when an input file is not found or not readable.
+The >0 exit value is the sum of all errors up to a maximum of 127,
+more errors may occur but the counter will only increment to this number.
 .Sh SEE ALSO
 .Xr indent 1 ,
 .Xr mail 1 ,