Hello all,
Working on some low-level support for hyperlinks, I've come across the
hypdivps package (https://ctan.org/pkg/hypdvips). It's largely about
doing stuff in DVI mode that pdfTeX/LuaTeX in PDF mode can do anyway.
However, there is one PDF feature that hypdvips can use that doesn't
seem to show up in pdfTeX or LuaTeX: QuadPoints.
Briefly, QuadPoints allow an annotation to an area defined by multiple
rectangles contained within the outer /Rect boundary. The usefulness
appears when breaking a link across lines: using QuadPoints, this is a
single object rather than multiple ones. pdfTeX and LuaTeX handle
breaking links and creation of the necessary annotations, but don't do
that using QuadPoints. I wonder if this was
- Never considered
- Considered but not at the time feasible (viewer support?)
- Considered but too complex to implement
- Tried but buggy or otherwise defective
Does anyone have any insight? I can see only one mention of QuadPoints
on the pdfTeX list
(https://tug.org/pipermail/pdftex/2007-February/007028.html).
Joseph
