1994-05-27 12:33:43 +00:00
|
|
|
.\" Copyright (c) 1980, 1990, 1993
|
|
|
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
|
|
|
.\"
|
|
|
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
|
|
|
.\" modification, are permitted provided that the following conditions
|
|
|
|
|
.\" are met:
|
|
|
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
|
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
|
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
|
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
|
|
|
.\" must display the following acknowledgement:
|
|
|
|
|
.\" This product includes software developed by the University of
|
|
|
|
|
.\" California, Berkeley and its contributors.
|
|
|
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
|
|
|
.\" may be used to endorse or promote products derived from this software
|
|
|
|
|
.\" without specific prior written permission.
|
|
|
|
|
.\"
|
|
|
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
|
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
|
.\" SUCH DAMAGE.
|
|
|
|
|
.\"
|
|
|
|
|
.\" @(#)expand.1 8.1 (Berkeley) 6/9/93
|
1999-08-28 01:08:13 +00:00
|
|
|
.\" $FreeBSD$
|
1994-05-27 12:33:43 +00:00
|
|
|
.\"
|
|
|
|
|
.Dd June 9, 1993
|
|
|
|
|
.Dt EXPAND 1
|
|
|
|
|
.Os BSD 4
|
|
|
|
|
.Sh NAME
|
|
|
|
|
.Nm expand ,
|
|
|
|
|
.Nm unexpand
|
|
|
|
|
.Nd expand tabs to spaces, and vice versa
|
|
|
|
|
.Sh SYNOPSIS
|
|
|
|
|
.Nm expand
|
|
|
|
|
.Op Fl Ns Ar tabstop
|
|
|
|
|
.Op Fl Ns Ar tab1,tab2,...,tabn
|
|
|
|
|
.Ar
|
|
|
|
|
.Nm unexpand
|
|
|
|
|
.Op Fl a
|
|
|
|
|
.Ar
|
|
|
|
|
.Sh DESCRIPTION
|
|
|
|
|
.Nm Expand
|
|
|
|
|
processes the named files or the standard input writing
|
|
|
|
|
the standard output with tabs changed into blanks.
|
|
|
|
|
Backspace characters are preserved into the output and decrement
|
|
|
|
|
the column count for tab calculations.
|
|
|
|
|
.Nm Expand
|
|
|
|
|
is useful for pre-processing character files
|
|
|
|
|
(before sorting, looking at specific columns, etc.) that
|
|
|
|
|
contain tabs.
|
|
|
|
|
.Pp
|
|
|
|
|
If a single
|
|
|
|
|
.Ar tabstop
|
|
|
|
|
argument is given, then tabs are set
|
|
|
|
|
.Ar tabstop
|
|
|
|
|
spaces apart instead of the default 8.
|
|
|
|
|
If multiple tabstops are given then the tabs are set at those
|
|
|
|
|
specific columns.
|
|
|
|
|
.Pp
|
|
|
|
|
.Nm Unexpand
|
|
|
|
|
puts tabs back into the data from the standard input or the named
|
|
|
|
|
files and writes the result on the standard output.
|
|
|
|
|
.Pp
|
|
|
|
|
Option (with
|
|
|
|
|
.Nm unexpand
|
|
|
|
|
only):
|
|
|
|
|
.Bl -tag -width flag
|
|
|
|
|
.It Fl a
|
|
|
|
|
By default, only leading blanks and tabs
|
|
|
|
|
are reconverted to maximal strings of tabs. If the
|
|
|
|
|
.Fl a
|
|
|
|
|
option is given, then tabs are inserted whenever they would compress the
|
|
|
|
|
resultant file by replacing two or more characters.
|
|
|
|
|
.El
|
|
|
|
|
.Sh HISTORY
|
|
|
|
|
The
|
|
|
|
|
.Nm expand
|
|
|
|
|
command appeared in
|
|
|
|
|
.Bx 3.0 .
|
