Restore historic behavior:

 o don't fmt lines that start with '.' to avoid hosing *roff
 o add -n flag to disable above behavior (undocumented feature in old fmt)
Patch from Ruslan Ermilov (FreeBSD)

1 files changed, 14 insertions, 3 deletions

diff --git a/usr.bin/fmt/fmt.1 b/usr.bin/fmt/fmt.1
index 67a934acbac..d5bddd7ab42 100644
--- a/usr.bin/fmt/fmt.1
+++ b/usr.bin/fmt/fmt.1
@@ -1,4 +1,4 @@
-.\" $OpenBSD: fmt.1,v 1.14 2001/11/28 22:09:28 millert Exp $
+.\" $OpenBSD: fmt.1,v 1.15 2001/11/29 00:33:06 millert Exp $
 .\"
 .\" Copyright (c) 1980, 1990, 1993
 .\"	The Regents of the University of California.  All rights reserved.
@@ -41,7 +41,7 @@
 .Nd simple text formatter
 .Sh SYNOPSIS
 .Nm fmt
-.Op Fl cmps
+.Op Fl cmnps
 .Op Fl d Ar chars
 .Op Fl l Ar num
 .Op Fl t Ar num
@@ -93,6 +93,16 @@ In this case, most of the other
 options are ignored; no splitting or joining of lines is done.
 .It Fl m
 Try to format mail header lines contained in the input sensibly.
+.It Fl n
+Format lines beginning with a
+.Ql \&.
+(dot) character.
+Normally,
+.Nm
+does not fill these lines, for compatibility with
+.Xr troff 1
+and 
+.Xr nroff 1 .
 .It Fl p
 Allow indented paragraphs.
 Without the
@@ -145,7 +155,8 @@ will reformat a paragraph,
 evening the lines.
 .Sh SEE ALSO
 .Xr mail 1 ,
-.Xr nroff 1
+.Xr nroff 1 ,
+.Xr troff 1
 .Sh HISTORY
 The
 .Nm