RE: apropos for packages [was: plz -> curl?]

[Drew Adams]

I wrote:

> 2. It would be good to update `apropos-documentation',
>    if this has not already been done, to include the
     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>    doc of packages.

It seems that, at least as recently as Emacs 27.2,
this has not been done, in spite of the doc of
`apropos-documentation' saying this:

  With C-u prefix, or if ‘apropos-do-all’ is non-nil,
  it searches all currently defined documentation
  strings.

For example, `C-u C-h d backtrace' doesn't show an
entry for package `backtrace', even though the pkg
doc string mentions "backtrace".  (Emacs 27.2)

If this has still not been fixed in Emacs 28, do we
need a bug filed for this, or can it just please be
fixed without a bug?