Re: .bp not working in groff 1.23.0 when it worked fine in 1.22.4

[Dave Kemper]

On 1/23/24, T. Kurt Bond <tkurtbond@gmail.com> wrote:
> I have a groff -ms source file
[...]
> When I groff it with version 1.23.0 the page breaks
> corresponding to the explicit .bp requests are missing.

This item in the (very lengthy) NEWS file for 1.23 probably explains
the change you're seeing:

  The s (ms) macro package now enables the formatter's "no-space mode"
  after ending displays (`DE`), equations (`EN`), tables (`TE`), and
  pictures without flyback (`PE`).  This means that display distance
  spacing (the `DD` register) overrides the spacing that may follow in
  a subsequent paragraph, section heading, or display instead of
  accumulating with that distance.  This change is to make the behavior
  of the package more predictable; you can fine-tune such spacing by
  setting the `DD` register in desired places.  It has also helped us
  to improve groff ms's rendering of historical ms(7) documents such as
  Kernighan & Cherry's "Typesetting Mathematics".

As documented, .bp has no effect in no-space mode.  You can force it
to start a new page anyway by defining your own simple macro that
first disables no-space mode (via the .rs request), then invokes .bp.
Then call that macro where you'd normally call .bp.