[XeTeX] Overfull boxes return status of 0 in XeTeX

[Philip Taylor]

Zdenek Wagner wrote:

> In MS-DOS, Windows, and OS/2 the script interpreter is recognized by a
> file extension.

Er, yes; but does that help ?  Does that in any way allow (say) TeXworks
to use a script written in Lua, if its own internal scripting language
is other than Lua ?