Bug Using Brackets

[Harry Lee]

Hi,

I found a bug when bash parsing brackets with version 5.0.3. Here are some 
outputs:

root@server:~# bash -version
GNU bash, version 5.0.3(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2019 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
root@server:~# echo [0-1]
1
root@server:~# echo [[[[[[[[[208174hkjdfsglh0-13984jf0]
1

When I use a old version bash, it's ok:

root@server2:~# bash -version
GNU bash, version 4.4.12(1)-release (x86_64-pc-linux-gnu)
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
root@server2:~# echo [0-1]
[0-1]
root@server2:~# echo [[[[[[[[[208174hkjdfsglh0-13984jf0]
[[[[[[[[[208174hkjdfsglh0-13984jf0]

Best regards,
Harry Lee