[luatex] LuaTeX file almost 2.5x bigger

[Khaled Hosny]

On Thu, Jul 29, 2010 at 08:20:17AM +0200, Pablo Rodríguez wrote:
> On 07/29/2010 04:21 AM, Robert wrote:
> >On 25.07.10 20:21, Pablo Rodríguez wrote:
> >>I'm not familiar with microtype. Thanks to a post from Ulrike Fischer,
> >>my settings are:
> >>
> >>\pdfprotrudechars2\pdfadjustspacing2
> >>\defaultfontfeatures{RawFeature={protrusion=default;
> >>expansion=default;},Mapping=tex-text,Scale=MatchLowercase}
> >
> >The "default" expansion settings (which are defined in
> >luaotfload/otfl-font-dum.lua) specify different expansion factors for
> >different glyphs (so-called selected expansion). Apart from the fact
> >that this is the reason why your pdf is blown up, it is not recommended
> >(at least not by Han The Thanh) from a typographical point of view. So,
> >to have all glyphs expanded by the same amount, you can use the
> >following settings instead:
> >
> >\pdfprotrudechars2
> >\pdfadjustspacing2
> >\directlua{
> >fonts.expansion.setups['nonselected'] =
> >{ stretch = 2, shrink = 2, step = .1, factor = 1 } }
> >\defaultfontfeatures{RawFeature={protrusion=default;
> >expansion=nonselected;}, Mapping=tex-text, Scale=MatchLowercase}
> 
> Many thanks for your help, Robert.
> 
> I'm afraid I get the following error with your code above:
> 
> ! LuaTeX error <\directlua >:1: attempt to index field 'expansion'
> (a nil value
> )
> stack traceback:
> 	<\directlua >:1: in main chunk.
> l.9 ... = 2, shrink = 2, step = .1, factor = 1 } }
> 
> What am I doing wrong? (I'm afraid it is all Greek to me ;-).)

It should be "expansions" (plural).

If it is desirable, we can add this to luaotfload and call it "simple"
or something.

Regards,
 Khaled

-- 
 Khaled Hosny
 Arabic localiser and member of Arabeyes.org team
 Free font developer