Bug#612995: grub-pc: pager does not work within a menuentry if loaded via configfile

[Josh Triplett]

Package: grub-pc
Version: 1.99~rc1-2
Severity: normal

>From the command line, I can "set pager=1", and then either cat a long
file or use a for loop to echo 30 lines, and see that the pager puts up
a "-- MORE --" prompt and waits for a key.  However, the same thing
doesn't seem to work from within a menuentry in a file loaded by
"configfile".  Try putting the following file as "test.cfg" somewhere
grub can get at, and then loading it via "configfile /path/to/test.cfg"
from the grub command line:

set pager=1

menuentry "Always present" {
    echo Insert something always useful here.
    for x in 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 ; do
        echo Piles of output
    done
}

x=3
if [ "$x" -gt 0 ] ; then
    menuentry "Conditionally present" {
        echo Insert something conditionally useful here.
    }
fi

if [ "$x" -gt 5 ] ; then
    menuentry "Conditionally present (and missing)" {
        echo Insert something conditionally non-useful here.
    }
fi


Loading test.cfg via configfile will bring up a menu with two entries.
Choosing either one of them should prompt for a key at the end of the
menuentry, and choosing the first one should additionally have a MORE
prompt after 24 lines as well as the prompt at the end.

If instead I make that file grub.cfg, rather than loading it via
configfile from the command line, then the MORE prompt works in the
first menu entry, but I still don't get prompts at the end of each
menuentry's output like I did with previous versions of GRUB2.  (I know
that it works with at least bzr revision 2587.)

- Josh Triplett

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

Kernel: Linux 2.6.37-trunk-amd64 (SMP w/2 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-pc depends on:
ii  debconf [debconf-2.0]        1.5.38      Debian configuration management sy
ii  grub-common                  1.99~rc1-2  GRand Unified Bootloader, version 
ii  libc6                        2.11.2-11   Embedded GNU C Library: Shared lib
ii  libdevmapper1.02.1           2:1.02.48-5 The Linux Kernel Device Mapper use
ii  ucf                          3.0025+nmu1 Update Configuration File: preserv

grub-pc recommends no packages.

Versions of packages grub-pc suggests:
ii  desktop-base                  6.0.5      common files for the Debian Deskto

-- debconf information excluded