[bug #50770] .PSPIC macro at bottom of page causes unwarranted page break

[Deri James]

Follow-up Comment #6, bug #50770 (project groff):

The problem with changing it is that it breaks backward compatibility, which
is important for software which has been around for a long time. A document
created 15 years ago should render the same now as it did then. This is an
aspiration, it is not always true, but it is something we should aim for.

I don't quite see how the problem changes with the size of the image, the
amount of "wasted" white space underneath a graphic is always just 1v, it does
not change. The problem of huge amounts of white space at the bottom of a page
because a particular graphic won't fit is always going to be there, pictures
do not get wrapped around a page boundary. In fact, the larger the image the
smaller the percentage of waste caused by 1v.

If you consider the case where a graphic does not extend too close to the
bottom of the page, it is "usual" to have a line of white space between the
bottom of the image and following text. So, if this behaviour was altered, any
document which relied on this behaviour would look ugly since this space would
disappear. Any change would also have to consider the impact if PSPIC is used
within a diversion, i.e. not at the point it is actually being output to the
page.

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