Why xfs_<utils> not 'readline' w/line-edit & history enabled?

[Linda Walsh]

Dave Chinner wrote:
> $ sudo xfs_db -r /dev/vdb
> xfs_db> inode 128
> (reverse-i-search)`in': inode 128
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Um...When I press up-arrow, I get nothing.

When I press down arrow -- also nothing.

Try hitting home for beginning of line --
nothing.   Tried ESC to re-edit line -- nothing. (enters ^[).

What are you typing to get the above?  does it require a config somewhere?