Example plot in Manual lacks text

[John W. Eaton]

On  5-Apr-2009, Michael D. Godfrey wrote:

| In any case, would it not be better to use the *.eps files for 
| generating the Manual?
| I think that most users include .eps in their documents.  (Or, at least, 
| that is what I see
| around here.)

EPS is the right thing for the DVI version.  For PDF, we should be
using PDF figures.  We are generating the PNG files for the HTML
version of the manual, and unfortunately, texinfo.tex hardwires the
list of image file extensions to look for as

  .png  .jpg  .jpeg  .JPG  .pdf  .PDF

in that order.  So I think this is really a bug in texinfo.tex.  I
think it should really prefer pdf.  Better yet, there should be some
way to specify the order.  Would someone like to report that problem
to the Texinfo maintainers?  Or better yet, create a patch that allows
the preferred order of image extensions to be specified and submit it
to them?

For now, I've made the following change since we are distributing our
own copy of texinfo.tex.

Thanks,

jwe

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