Comment # 7 on bug 953051 from Josef Reidinger

(In reply to Michael Chang from comment #6)
> I didn't see relevant changes that could regress grub2-mkpasswd-pbkdf2 .. 
> 
> Maybe 'echo' shell builtin needs explicit '-e' ? Otherwise we could pass
> single line input to grub2-mkpasswd-pbkdf2 and somehow it misbehaves for
> premature EOF in the stream .. ?
> 
> echo -e 'test\ntest' | LANG=C grub2-mkpasswd-pbkdf2
> 
> At least it works for me.

yes, -e also works for me.
But probably I do something wrong as \n should be interpretted by ruby so in
fact it should use

echo 'test
test' | LANG=C grub2-mkpasswd-pbkdf2


so I need to investigate it more. I will check logs more deeply.