.Dd Jun 28, 2018
.Dt lis 1
.Os
.Sh NAME
.Nm lis
.Nd check for indent style
.Sh SYNOPSIS
.Nm
.Op -s [tab|space]
.Op Ar
.Sh DESCRIPTION
The
.Nm
utility prints a set of errors to standard error if there are lines
inside each
.Ar file
that don't use
.Op -s
for indenting.
If
.Op -s
is not specified, the default value is tab. If
.Ar file
is absent,
.Nm
reads from standard input.
.Sh EXIT STATUS
.Ex -std
.Sh EXAMPLES
Check for spaces indenting
.Bd -literal
	$ echo " bar" > foo
	$ lis foo
.Ed
.Pp
Check for tabs indenting
.Bd -literal
	$ echo "	bar" > foo
	$ lis foo
.Ed
.Sh SEE ALSO
.Xr awk 1