[luatex] status.shell_escape broken in texlive 2017

[David Carlisle]

<http://chat.stackexchange.com/transcript/message/36800640#36800640>

\directlua{print('shell-escape = ' .. status.shell_escape)}


\bye

the above if run with luatex (and no --shell-escape option)
returns
texshell-es
cape = 2

in texlive 2016  (even using a luatex 1.04 test release)

but

texshell-escape = 1

in 2017

This has broken lots of things and causing mail
on the texlive list, was this an intended change?

David
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