Bug#849113: /lib/lsb/init-functions: When echoing status messages, use \r\n instead of \n in case the terminal is in ~OPOST mode

[Ben Longbons <brlongbons@gmail.com>]

Package: lsb-base
Version: 9.20161125
Severity: wishlist
File: /lib/lsb/init-functions

Dear Maintainer,

When a terminal is in raw mode (in particular, when OPOST is not set in
termios.c_oflag, which disables the effect of ONLCR), emitting a \n will
only move the cursor down one line, rather than implicitly adding a \r
to move to the start of the line.

In particular, this often happens when restarting the display manager.

To fix, simply ensure that every \n is preceded by a \r. As long as this
is only done when output is a terminal, it won't mess up any log files.

-Ben


-- System Information:
Debian Release: stretch/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, x32, arm64

Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

-- no debconf information