Marco, many thanks. By the way, how can I load the `luatex-plain.fmt` by default when typing "luatex somefile.tex"?   
 Date: Sat, 20 Apr 2013 12:05:25 +0200
From: homerow@lavabit.com
To: ntg-context@ntg.nl
Subject: Re: [NTG-context] use plain LuaTeX in ConTeXt standalone

On 2013¨C04¨C20 Tim Li wrote:
 
> Hi, many context users are also luatex user, and the context standalone also contains luatex binary (windows). I input the 'luatex' in the cmd, but it can't work. The message is as follows: d:\>luatex
> luatex
> This is LuaTeX, Version beta-0.77.0-2013041621 (rev 4633) 
>  \write18 enabled.
> **\relax
> I can't find the format file `luatex.fmt'!kpathsea: Running mktexfmt luatex.fmtThe command name is D:\context\tex\texmf-mswin\bin\mktexfmt Since there is not mktexfmt in the context standalone, is that mean I can't use plain luatex in the context standalone?  		 	   		  
 
1) Create a file ˇ°luatex-plain.texˇ± with the following context:
 
\input plain
\directlua {tex.enableprimitives('', tex.extraprimitives())}
\pdfoutput=1
\everyjob \expandafter {%
    \the\everyjob
    \input luatex-basics\relax
    \input luatex-fonts\relax
    \input luatex-mplib\relax
}
\edef\fmtversion{\fmtversion+luatex}
\dump
 
2) Build the format:
 
  luatex --ini luatex-plain.tex
 
3) Compile with:
 
  luatex --fmt=luatex-plain.fmt somefile.tex
 
 
Marco

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