my ($self) = @_; # $_[1] = $rbuf
if (defined($_[1])) {
$_[1] eq '' and return eval {
my $lse = delete $self->{lse};
$lse->query_approxidate($lse->git,
$self->{mset_opt}->{qstr});
my ($self) = @_; # $_[1] = $rbuf
if (defined($_[1])) {
$_[1] eq '' and return eval {
my $lse = delete $self->{lse};
$lse->query_approxidate($lse->git,
$self->{mset_opt}->{qstr});