/test.mp3:
$ fq -i
null> he\t
help
hevc_annexb
hevc_au
hevc_dcr
hevc_nalu
hex
hexdump
null> _is_ide\t
_is_ident
null> {aa: 123} | var("test")
null> $\t
$ENV
$test
null> $test.a\t
aa
null> {bb: 123} as $aa | $aa.b\t
bb
null> {aa: 123, ab: "a"} | .a\t
aa
ab
null> {a: {aa: 123, ab: "a"}} | .a.a\t
aa
ab
null> {aa: 123, ab: "a"} | repl
> object> .a\t
aa
ab
> object> ^D
null> ^D
$ fq -i . /test.mp3
mp3> .f\t
footers
frames
mp3> ._\t
_bits
_bytes
_description
_error
_format
_len
_name
_path
_start
_stop
_symbol
_unknown
mp3> .frames\t
frames[]
mp3> .frames[]\t
.
mp3> ^D