Re: generic font loader + luaotfload: 'nodepool' (a nil value)"

[Hans Hagen <pragma@wxs.nl>]

On 7/14/2017 4:39 PM, Ulrike Fischer wrote:
> I have been trying to use the newest generic font loader
> (luatex-fonts-merged.lua) in the context minimals with luaotfload
> in latex.
> 
> This mostly worked with one exception: luaotfload-letterspace.lua
> reference a value that no longer exists:
> 
> "...mf-dist/tex/luatex/luaotfload/luaotfload-letterspace.lua:73:
> attempt to index local 'nodepool' (a nil value)".
> 
> luaotfload does
> 
> local nodedirect         = nodes.nuts
> local nodepool           = nodedirect.pool
> local new_kern           = nodepool.kern
> 
> and uses new_kern here
> 
> local kern_injector = function (fillup, kern)
>    if fillup then
>      local g = new_glue(kern)
>      local s = getfield(g, "spec")
>      setfield(s, "stretch", kern)
>      setfield(s, "stretch_order", 1)
>      return g
>    end
>    return new_kern(kern)
> end

yes, i decided to limit the dependencies ... (also because the kern 
allocator was a plug outside context)

you can use:

   local new = node.direct.new

   local g = new("glue")
   setfield(g, "stretch", kern)
   setfield(g, "stretch_order", 1)

and forget about the spec subnode which is gone for a while now (but 
still faked)

> The error goes away when I add this to the fontloader (from an older
> version):
> 
> nuts.new=direct.new
> -- new UF
>     nuts.pool={}
>     function nuts.pool.kern(k)
>     local n=nuts.new("kern",1)
>     setfield(n,"kern",k)
>     return n
>     end
> -- end UF
> nuts.getprop=nuts.getattr
> 
> But I would prefer to change luaotfload-letterspace.lua to use
> whatever should be used to get the correct effect. Can someone tell
> me how to do it??
> 
> 
> 


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