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.Dd October 8, 2015
.Dt UNEXPAND 1
.Os sbase
.Sh NAME
.Nm unexpand
.Nd unexpand spaces to tabs
.Sh SYNOPSIS
.Nm
.Op Fl a
.Op Fl t Ar tablist
.Op Ar file ...
.Sh DESCRIPTION
.Nm
converts spaces to tabs in each
.Ar file
as specified in
.Ar tablist .
If no file is given,
.Nm
reads from stdin.
.Pp
Backspace characters are preserved and decrement the column count
for tab calculations.
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl a
Convert spaces to tabs everywhere, not just at the start of lines.
.It Fl t Ar tablist
Specify tab size or tabstops.
.Ar tablist
is a list of one (in the former case) or multiple (in the latter case)
strictly positive integers separated by ' ' or ','.
.Pp
The default
.Ar tablist
is "8".
.El
.Sh SEE ALSO
.Xr expand 1
.Sh STANDARDS
POSIX.1-2013.
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