Dear Maintainer,

    printf 'abcd\b\b\b\b____ ____\b\b\b\bABCD'  | less
renders as (with ąĄ for underlined aA):
    ą___ ĄBCD
which is "not what I'd expect" at least and given that this works for
individual columns just fine I'd hazard a guess that it's "just wrong".

(The former is a very popular style from the time of actual
 typewriters-as-terminals that I run into constantly.
 I haven't encountered the latter in the wild I think.)

Best,
наб