.Dd 2015-10-08
.Dt EXPAND 1
.Os sbase
.Sh NAME
.Nm expand
.Nd expand tabs to spaces
.Sh SYNOPSIS
.Nm
.Op Fl i
.Op Fl t Ar tablist
.Op Ar file ...
.Sh DESCRIPTION
.Nm
converts tabs to spaces 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 i
Only expand tabs at the beginning of lines, i.e. expand each
line until a character different from '\et' and ' ' is reached.
.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 fold 1 ,
.Xr unexpand 1
.Sh STANDARDS
The
.Nm
utility is compliant with the
.St -p1003.1-2013
specification.
.Pp
The
.Op Fl i
flag is an extension to that specification.