[octave forge] (generate_html) fprinf failure during html generation

[JuanPi]

Hi all,
I am preparing the release of matgeom and geomtry and when I am trying
to generate the html for matgeom I get

> pkg load generate_html
> generate_package_html ("matgeom", "OF/matgeom-html", "octave-forge");
error: fprintf: invalid format specified
error: called from
    generate_package_html>fileprintf at line 833 column 5
    generate_package_html>process_alpha_tree at line 746 column 5
    generate_package_html>process_alpha_tree at line 740 column 7
    generate_package_html at line 293 column 5

I have not been able to identify the source of the problem in the
unwieldy generate_package_html.m
It seems to fail while processing geom3d/cart2cyl.m, but I can't see
any problem in the docstring of that function.

Any suggestions?

-- 
JuanPi Carbajal
https://goo.gl/ayiJzi

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