Bug#944679: extlinux: Visual bugs while editing a long kernel command line

[Mikhail Morfikov <mmorfikov@gmail.com>]

On 23/12/2019 19:30, Lukas Schwaighofer wrote:
> I'll look into this and try to reproduce this within the next few days.
> To speed things up, can you provide me with your configuration?

Here's my config:

========================================
DEFAULT debian
PROMPT 0
TIMEOUT 200
UI vesamenu.c32
MENU MARGIN 10
MENU WIDTH 80
MENU ROWS 10
MENU HELPMSGROW 25
MENU CMDLINEROW 25
MENU TABMSGROW 25
MENU HSHIFT 0
MENU VSHIFT 0
MENU TITLE !!! BOOT !!!
MENU BACKGROUND background_640x480.png
MENU COLOR border       30;44   #40ffffff #a0000000 std
MENU COLOR title        1;36;44 #9033ccff #a0000000 std
MENU COLOR sel          7;37;40 #e0ffffff #20ffffff all
MENU COLOR unsel        37;44   #50ffffff #a0000000 std
MENU COLOR help         37;40   #c0ffffff #a0000000 std
MENU COLOR timeout_msg  37;40   #80ffffff #00000000 std
MENU COLOR timeout      1;37;40 #c0ffffff #00000000 std
MENU COLOR msg07        37;40   #90ffffff #a0000000 std
MENU COLOR tabmsg       31;40   #30ffffff #00000000 std

LABEL debian
    MENU LABEL Debian 5.4.6-amd64
    KERNEL ../vmlinuz-5.4.6-amd64
    APPEND root=/dev/mapper/wd_black_label-root net.ifnames=0 biosdevname=0 audit_backlog_limit=2048 log_buf_len=32M systemd.log_target=kmsg systemd.unified_cgroup_hierarchy=0 printk.devkmsg=on swapaccount=1 luks.crypttab=no page_poison=1 slab_nomerge slub_debug=FZP pti=auto mds=full vsyscall=none spec_store_bypass_disable=on lockdown=none apparmor=1 security=apparmor ro loglevel=4
    INITRD ../initrd.img-5.4.6-amd64
    TEXT HELP
    Debian (/dev/sda1).
    ENDTEXT

MENU CLEAR
========================================

> 
> If you're able to perform some test, can you check whether the
> behavior is consistent when using a different UI modules (menu.c32 or
> vesamenu.c32).
I tested both menu.c32 and vesamenu.c32, and they have the same issue.