That's great to hear that someone is actually thinking about doing this... but a patch out there doesn't help me. Until that patch is in mainline grub code and present in all major distros, grub is completely useless to me.
I do a lot of automated testing, sometimes on machines that take a long time to boot. Without the -R (or equivilent option) all of my time would be used by standing around waiting on a LOT of individual machines to get to a boot loader prompt so that I could select the right kernel. Not all of us boot a kernel expecting or hoping for it to work. :)
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