[tex4ht] "page is empty" messages. But nothing seems wrong in the HTML

[Michal Hoftich]

Hi Nasser,


On Thu, Apr 5, 2018 at 2:43 AM, Nasser M. Abbasi <nma at 12000.org> wrote:
> I am just curious, why sometimes I see, when compiling
> with tex4ht, using SVG for math, messages that says
>
>   processing page nnnnn
>   page is empty   ------>
>
> I see so many of them. Interspersed between not empty pages.
>
> I am now compiling one large file and seeing these. But I see
> them on many other files, just thought to ask. I can provide
> more information.
>
> The strange thing, I see nothing wrong in the HTML so far, but
> this produces hundreds of web pages with lots of math and I could
> have missed something. There are no errors, compile completes OK.
>

there is an empty page after each picture in the .idv file. I am not
sure why it is inserted. Anyway, the default image compilation scripts
convert only non-empty pages, so it  is not so big issue. I think that
you use a modified script that converts all pages in the .idv file.
There is slight slowdown due the empty pages, but it would be much
slower to load the .idv file for each page separately. It should be
possible to specify pages which should be converted by dvisvgm, but I
am not sure how it would work for thousands of pages.

Best regards,
Michal