Domesticating applications, OpenBSD style

I see at least two ways of making this useful for awk. One is to expose the tame() call to awk scripts to be able to write safer awk scripts. The other is to add a command line option to awk to set the flags awk should use in its call to tame(). Most awk scripts I have seen doesn't need more than simple file I/O.

As for cat it is not quite as simple as you think it is. For one thing it includes calls to several multi-byte character string functions.