[dvipdfmx] missing annotation rectangle if the box contains no glyph

[Shunsaku Hirata]

Sorry if I misunderstand.

> But couldn't there be a generic special that describes an area and that
> xdvipdfmx simply ignores outside bann/eann but takes into account
> inside the annotation?
>
> E.g.
>
> \special{pdf:rule width 32pt height 9pt depth 1pt} %ignore
> ....
> \special{pdf:bann ...}
> \special{pdf:rule width 32pt height 9pt depth 1pt} %
> some other stuff   \special{pdf:rule width 32pt height 15pt depth 0pt} %
> more other stuff
> \special{pdf:eann ...}

My suggested new special pdf:xann (not pdf:ann) is for such purpose.
The following special

  \special{pdf:xann width 32pt height 9pt depth 1pt}

within pdf:bann and pdf:eann block tells dvipdfmx to treat it as a box
with size width 32pt, height 9pt, and depth 1pt, located at current
point. But meaningful only for annotation region calculation and no
graphics object drawn.


Thanks,
Shunsaku Hirata