It turns out that using grub_transform unconditionally causes the
grub.conf parse to fail with:
augeas failed to parse /boot/grub/grub.conf:
error "Lenses @Grub and grub.lns could be used to load this file"
I think that means that two "different" lenses apply to the file which
confuses Augeas (see src/transform.c:transform_load).
Rich.
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