Update nl(1) manpage

nl.1

@@ -1,46 +1,46 @@
-.TH NL 1 sbase\-VERSION
+.Dd December 4, 2014
-.SH NAME
+.Dt NL 1 sbase\-VERSION
-nl \- number lines
+.Os
-.SH SYNOPSIS
+.Sh NAME
-.B nl
+.Nm nl
-.RB [ \-b
+.Nd line numbering filter
-.IR mode ]
+.Sh SYNOPSIS
-.RB [ \-i
+.Nm nl
-.IR increment ]
+.Op Fl b Ar type
-.RB [ \-s
+.Op Fl i Ar incr
-.IR separator ]
+.Op Fl s Ar sep
-.RI [ file ]
+.Op Ar file
-.SH DESCRIPTION
+.Sh DESCRIPTION
-.B nl
+.Nm
-reads each file in sequence and writes it to stdout with non\-empty lines
+reads lines from the named
-numbered.  If no file is given, nl reads from stdin.
+.Ar file
-.SH OPTIONS
+and writes them to stdout with non-empty lines
-.TP
+numbered.  If no file is given
-.BI \-b " mode"
+.Nm
-defines which lines will be numbered:
+reads from stdin.
-.PD 0
+.Sh OPTIONS
-.RS
+.Bl -tag -width Ds
-.TP
+.It Fl b Ar type
-.B a
+Defines which lines will be numbered:
-all lines.
+.Bl -tag -width pstringXX
-.TP
+.It a
-.B n
+All lines.
-no lines.
+.It n
-.TP
+No lines.
-.BI p pattern
+.It t
-only lines which match
+Only non-empty lines (default).
-.IR pattern ,
+.It p Ns Ar expr
+Only lines which match
+.Ar expr ,
 a regular expression as defined in
 .IR regex (7).
 .TP
-.B t
+.El
-only non\-empty lines (default).
+.It Fl i Ar incr
-.RE
+Defines the increment between numbered lines.
-.PD
+.It Fl s Ar sep
-.TP
+Defines the string used to separate line numbers and lines.  By default this is
-.BI \-i " increment"
-defines the increment between numbered lines.
-.TP
-.BI \-s " separator"
-defines the string used to separate line numbers and lines.  By default this is
 a tab.
+.El
+.Sh SEE ALSO
+.Xr pr 1

nl.c

@@ -18,7 +18,7 @@ static regex_t preg;
 static void
 usage(void)
 {
-	eprintf("usage: %s [-b style] [-i increment] [-s sep] [file]\n", argv0);
+	eprintf("usage: %s [-b type] [-i incr] [-s sep] [file]\n", argv0);
 }
 
 int