Bug#890316: neovim: cmd line shows special chars like":]2 q" instead of ":"

[Luffah]

Package: neovim
Version: 0.2.2-2
Severity: normal

Hello Maintainer,

   When i open `nvim -u NONE` and i press ':' command line
   shows special chars like":]2 q" instead of ":" .

Have a good day.

-- System Information:
Debian Release: 9.3
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'stable-updates'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.12.0-0.bpo.2-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8),
LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages neovim depends on:
ii  libc6            2.24-11+deb9u1
ii  libjemalloc1     3.6.0-9.1
ii  libluajit-5.1-2  2.0.4+dfsg-1+b1
ii  libmsgpackc2     2.1.5-1
ii  libtermkey1      0.19-1
ii  libunibilium0    1.2.0-1
ii  libuv1           1.9.1-3
ii  libvterm0        0~bzr684-1
ii  neovim-runtime   0.2.2-2

Versions of packages neovim recommends:
pn  python-neovim   <none>
pn  python3-neovim  <none>
ii  xsel            1.2.0-2+b1
ii  xxd             2:8.0.0197-4+deb9u1

Versions of packages neovim suggests:
ii  exuberant-ctags [ctags]  1:5.9~svn20110310-11
pn  vim-scripts              <none>

-- no debconf information