Bug#432280: "bash-like" command interface locks up typing long lines?

[Trent Buck]

Package: grub-pc
Version: 1.95+20070626-1
Severity: normal

After copying /usr/share/grub/unifont.pff to my /boot partition, I
re-ran update-grub and rebooted.  The gfxterm terminal didn't appear
to start (still 640x480 with white text), and there were no entries in
the menu chooser thingy.  I pressed c to enter the "bash-like" command
mode.

I could enter linux, initrd and boot commands and succeeded in booting
(yay for tab completion!).  However I noticed that typing a line
longer wider than the screen, e.g.

    linux (hd0,1)/vmlinuz-2.6.21-2-amd64 root=/dev/mapper/Etch-root ro video=radeonfb:1600x1200

caused the system to stop updating the screen.  I couldn't see
anything I typed appearing, so I tried blindly finishing the command
and pressing Enter.  Nothing appeared to happen so after a couple of
seconds so I rebooted the system and dropped the video= argument,
which made the line length short enough to fit, allowing me to boot.

-- Package-specific info:

*********************** BEGIN /proc/mounts
rootfs / rootfs rw 0 0
none /sys sysfs rw,nosuid,nodev,noexec 0 0
none /proc proc rw,nosuid,nodev,noexec 0 0
udev /dev tmpfs rw 0 0
/dev/mapper/Etch-root / xfs rw 0 0
/dev/mapper/Etch-root /dev/.static/dev xfs rw 0 0
tmpfs /lib/init/rw tmpfs rw,nosuid 0 0
usbfs /proc/bus/usb usbfs rw,nosuid,nodev,noexec 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
devpts /dev/pts devpts rw,nosuid,noexec 0 0
fusectl /sys/fs/fuse/connections fusectl rw 0 0
/dev/hda1 /boot ext3 rw,data=ordered 0 0
fs:/alt/home /home nfs rw,vers=3,rsize=32768,wsize=32768,hard,intr,proto=tcp,timeo=600,retrans=2,sec=sys,addr=fs 0 0
fs:/alt /alt nfs rw,vers=3,rsize=32768,wsize=32768,hard,intr,proto=tcp,timeo=600,retrans=2,sec=sys,addr=fs 0 0
binfmt_misc /proc/sys/fs/binfmt_misc binfmt_misc rw,nosuid,nodev,noexec 0 0
*********************** END /proc/mounts

*********************** BEGIN /boot/grub/device.map
(hd0)	/dev/hda
*********************** END /boot/grub/device.map

*********************** BEGIN /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automaticaly generated by /usr/sbin/update-grub using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
set default=0
set timeout=5
set root=(Etch-root)
font (hd0,1)/grub/unifont.pff
set gfxmode=1600x1200
insmod gfxterm
insmod vbe
terminal gfxterm
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/10_hurd ###
### END /etc/grub.d/10_hurd ###

### BEGIN /etc/grub.d/10_linux ###
menuentry "Debian GNU/Linux, linux 2.6.21-2-amd64" {
	linux	(hd0,1)/vmlinuz-2.6.21-2-amd64 root=/dev/mapper/Etch-root ro 
	initrd	(hd0,1)/initrd.img-2.6.21-2-amd64
}
menuentry "Debian GNU/Linux, linux 2.6.21-2-amd64 (single-user mode)" {
	linux	(hd0,1)/vmlinuz-2.6.21-2-amd64 root=/dev/mapper/Etch-root ro single 
	initrd	(hd0,1)/initrd.img-2.6.21-2-amd64
}
menuentry "Debian GNU/Linux, linux 2.6.21-1-amd64" {
	linux	(hd0,1)/vmlinuz-2.6.21-1-amd64 root=/dev/mapper/Etch-root ro 
	initrd	(hd0,1)/initrd.img-2.6.21-1-amd64
}
menuentry "Debian GNU/Linux, linux 2.6.21-1-amd64 (single-user mode)" {
	linux	(hd0,1)/vmlinuz-2.6.21-1-amd64 root=/dev/mapper/Etch-root ro single 
	initrd	(hd0,1)/initrd.img-2.6.21-1-amd64
}
### END /etc/grub.d/10_linux ###
*********************** END /boot/grub/grub.cfg

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (990, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.21-2-amd64 (SMP w/1 CPU core)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages grub-pc depends on:
ii  libc6                         2.5-11     GNU C Library: Shared libraries
ii  liblzo2-2                     2.02-3     data compression library

grub-pc recommends no packages.

-- no debconf information