seq: different output for seq --format=d%030g 12 #5766
Description
With our:
$ ./target/debug/coreutils seq --format=d%030g 15
d000000000000000000000000000001
[...]
d000000000000000000000000000009
d00000000000000000000000001e+01
d00000000000000000000000001e+01
d00000000000000000000000001e+01
with GNU:
/usr/bin/seq --format=d%030g 15
d000000000000000000000000000001
[...]
d000000000000000000000000000009
d000000000000000000000000000010
d000000000000000000000000000011
d000000000000000000000000000012
d000000000000000000000000000013
d000000000000000000000000000014
d000000000000000000000000000015
it causes tests/cp/link-heap to fail