Re: adaptive-fill bug?

[Richard Stallman]

    2. it rejects fill-prefixes guessed by adaptive-fill-mode if they are longer
       than a line of text (longer than the difference between fill-column and
       left-margin).

    The second part is the crucial one and should be 100% uncontroversial.

I agree.

    The first part should be harmless as well: such a check used to be done on
    both the first and the second line of a paragraph.  I removed the check on
    the first line several years ago because it introduced a bug, and moved the
    paragraph-start check further down, just before returning.  This late-check
    also makes the second check unnecessary.

I don't follow the logic here; I don't see why it is unnecessary.