Bug#853855: di-utils: Kernel boot options containing a dot are not propagated to the installed system

[Emmanuel Kasper <emmanuel@libera.cc>]

Package: di-utils
Version: 1.117
Severity: minor
Tags: d-i

A kernel boot param like net.ifnames=0 will be skipped when the installer parses the boot option for setting the bootloader.

Found in di-utils: 

                # Skip module-specific variables
                varnodot="${var##*.*}"
                if [ "$varnodot" = "" ]; then
                        continue
                fi

So basically any option containing a dot is not propagated to the
installed system.  This was introduced by
7cf15980d714da8b958a73c93459ee09fdbb9415 ("Skip new module-specific
parameters in user-params.")

I found no documented or obvious reason for this behaviour.


-- System Information:
Debian Release: 8.7
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.16.0-4-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)