A question about the node library in luatex

A question about the node library in luatex

[Jin-Hwan Cho]

I am trying a few tests with luatex.

1. Made a format file "luaetex.fmt" by "luatex --ini etex.ini"
    and a lua file "luaetex.lua" containing just one line "node.types()"

2. Test file "test.tex" is as follows:

\directlua0{node.types()}
\bye

3. Run "luatex --fmt=luaetex.fmt test". Then there is no problem.

4. Instead, "luatex --lua=luaetex.lua --fmt=luaetex.fmt test" causes
    an error.

Why don't we use the node library in the lua file "luaetex.lua"?

Thanks in advance, ChoF.

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Re: A question about the node library in luatex

[Hans Hagen]

Jin-Hwan Cho wrote:
> I am trying a few tests with luatex.
> 
> 1. Made a format file "luaetex.fmt" by "luatex --ini etex.ini"
>     and a lua file "luaetex.lua" containing just one line "node.types()"

that's rather useless lua

make that

for k, v in ipairs(nodes.types()) do
	print(k,v)
end

or so; also keep in mind that some libraries are initialized and 
available a bit later (after all, there is no need to initialize nodes 
when just processing lua code)

> 2. Test file "test.tex" is as follows:
> 
> \directlua0{node.types()}
> \bye

just a function

> 3. Run "luatex --fmt=luaetex.fmt test". Then there is no problem.
> 
> 4. Instead, "luatex --lua=luaetex.lua --fmt=luaetex.fmt test" causes
>     an error.

what error

> Why don't we use the node library in the lua file "luaetex.lua"?

?

hans

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Re: A question about the node library in luatex

[Taco Hoekwater]

>> Why don't we use the node library in the lua file "luaetex.lua"?
> 
> ?

 From the manual:

   Commandline processing happens very early on. So early, in fact, that
   none of TeX's initializations have taken place yet. For that reason,
   the tables that deal with typesetting, like tex, token, node and pdf,
   are off-limits during the execution of the startup file

Best wishes,
Taco
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Re: A question about the node library in luatex

[Jin-Hwan Cho]

On May 26, 2008, at 7:34 PM, Taco Hoekwater wrote:

>>> Why don't we use the node library in the lua file "luaetex.lua"?
>>
>> ?
>
> From the manual:
>
>   Commandline processing happens very early on. So early, in fact,  
> that
>   none of TeX's initializations have taken place yet. For that reason,
>   the tables that deal with typesetting, like tex, token, node and  
> pdf,
>   are off-limits during the execution of the startup file

Thanks a lot.

Actually I wanted to load "font-otf.lua" in the file "luaetex.lua",  
but there
were bunch of "node" in that file. I must change my mind.

Best regards, ChoF.
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