Bug#814743: info --output <file> doesn't output anything

[Vincent Lefevre <vincent@vinc17.net>]

Package: info
Version: 6.1.0.dfsg.1-1
Severity: important

"info --output <file>" doesn't output anything:

$ info --output -
$

This is a regression and this breaks zsh completions.

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'stable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.3.0-1-amd64 (SMP w/8 CPU cores)
Locale: LANG=POSIX, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages info depends on:
ii  install-info  6.1.0.dfsg.1-1
ii  libc6         2.21-7
ii  libtinfo5     6.0+20151024-2

info recommends no packages.

Versions of packages info suggests:
ii  texinfo-doc-nonfree  6.1.0-1

-- no debconf information