[luatex] io.popen security (was: slow io.popen)

[Stephan Hennig]

Am 29.01.2013 10:02, schrieb Taco Hoekwater:

> On my system,
> 
>    \directlua { assert(io.popen('rm -f whatever')) }
> 
> produces:
> 
>    ! LuaTeX error [string "\directlua "]:1: Command execution disabled
>    via shell_escape='p'
> 
> as it should.

Same here with luatex.  It is actually texlua, which executes arbitrary
shell commands.  Is it intentional that luatex and texlua don't behave
identical wrt shell commands in popen?

Best regards,
Stephan Hennig