[luatex] LuaTeX file almost 2.5x bigger

[Hartmut Henkel]

On Sun, 25 Jul 2010, Hans Hagen wrote:
> On 25-7-2010 10:24, Pablo Rodríguez wrote:
>
> > AFAIK LuaTeX doesn't embed expanded fonts many times, is there any
> > possibity that in the future the font expansion technology in LuaTeX
> > will be improved so that LuaTeX would generate smaller files?
>
> Actually the backend code has been rewritten and this is the way it's
> done now. I think that the larger file size is a non-issue for
> documents that end up in professional print (esp when images are also
> part of teh document). For documents meant for reading from displays
> font expansion makes no sense anyway (actually, in print it also is
> somewhat debatable as abusing it makes things worse).
>
> Btw, as font expansion works on a line basis,

it should i guess, but in that example it doesn't; expansion changes
several times within a line, often glyph-wise. Looks as if the backend
already gets this variable expansion (or extension?) info from the node,
no idea why.

> having many more steps does not make a big difference in file size
> (contrary to having more font instances) so there you gain. Also, you
> might consider applying font expansion in selected cases.

Regards, Hartmut