Bug#870133: trans: prints 'null' at the end of some lines

[Paul Wise]

Package: translate-shell
Version: 0.9.5-1
Severity: minor
File: /usr/bin/trans

trans is working for me but some of the translations end in 'null',
mostly when English was translated to English but also with some
successful translations from other languages.

$ trans -brief :en
hola
Hello
test
test null
hmm
hmm
what
what null
å°±
on null
䞍
Do not null
bonjour
Hello
hablamos
We speak
他
he null

-- System Information:
Debian Release: buster/sid
  APT prefers testing-debug
  APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.11.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages translate-shell depends on:
ii  gawk            1:4.1.4+dfsg-1
ii  libfribidi-bin  0.19.7-1+b1

Versions of packages translate-shell recommends:
ii  rlwrap  0.42-3

Versions of packages translate-shell suggests:
pn  mplayer2  <none>