[syslinux] SAY command (mis)behaviour?

[nfb]

Hi,
I have a small issue with the SAY command and i hope you can clarify
it out for me.

I boot my system with the attached extlinux.conf, which has some
entries to boot old kernels. When i'm booting the old versions i'd
like to have a reminder message recalling me that the most recent
kernel is not being used, so that i don't forget to switch back to it,
for example after many days of uptime.

Now, is it normal that _every_ SAY command is executed no matter which
LABEL block is being booted? In the attached file, if i boot the LABEL
"debian" i still get the messages from the two other blocks, and
obviously i don't want that. Did I misunderstand what the SAY command
should do?

Thanks for your attention.

-- 
free as in freedom, not free beer
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#DEFAULT debian.4.17                                                             
DEFAULT debian                                                                   
                                                                                 
LABEL debian                                                                     
    KERNEL /vmlinuz                                                              
    APPEND root=UUID=e3ef26d2-2867-48fe-9369-d0a32c5e1d31   ro  quiet   -- systemd.show_status=true
    INITRD /initrd.img                                                           
                                                                                 
LABEL debian.old                                                                 
    SAY *** You are booting on old kernel, edit DEFAULT in your extlinux.conf when done ***
    KERNEL /vmlinuz.old                                                          
    APPEND root=UUID=e3ef26d2-2867-48fe-9369-d0a32c5e1d31   ro  quiet   -- systemd.show_status=true
    INITRD /initrd.img.old                                                       
                                                                                 
LABEL debian.4.17                                                                                        
    SAY *** You are booting on kernel 4.17, edit DEFAULT in your extlinux.conf when done ***
    KERNEL /vmlinuz-4.17.0-3-amd64                                               
    APPEND root=UUID=e3ef26d2-2867-48fe-9369-d0a32c5e1d31   ro  quiet   -- systemd.show_status=true
    INITRD /initrd.img-4.17.0-3-amd64