\starttext

\input "|ls"

\stoptext

leads to

(/usr/share/texmf-tetex/tex/latex/tools/.tex File ignored)
Runaway argument?
ls"
! Paragraph ended before \next was complete.
<to be read again>
                   \par

???

Taco Hoekwater a écrit :

>Hans Hagen wrote:
>  
>
>>piping: the latest versions of pdftex support this (i\ve forgotten the syntax, but taco who wrote the patch may remember)
>>    
>>
>
>piping syntax:
>
>   \input "|ruby ./myscript.rb \vartest XXXXXXXXX"
>
>the magic trick is the | symbol. With your current tex:
>
>   \writ18{ruby ./myscript.rb \vartest XXXXXXXXX > whatever.tex}
>   \input whatever % or something using \openin ...
>
>
>Taco
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>
>
>  
>