ftw() please

[GReagle]

Hello. Would you consider adding ftw() or ntfw()? They are documented at https://pubs.opengroup.org/onlinepubs/9699919799/functions/ftw.html
and https://pubs.opengroup.org/onlinepubs/9699919799/functions/nftw.html

[gvvaughan]

Sure! Do you have a patch?

[GReagle]

I do not. Which module would it belong in?

[gvvaughan]

I would say it needs its own ftw module, to follow the established pattern of lua modules named after posix headers.

[gvvaughan]

Actually, now that I read the SUSV3 I see that they have marked these APIs as obsolete. Maybe a better approach is to implement the fts.h API calls in Lua over the existing luaposix wrapped calls?

Or at the very least to have a Lua implementation for ftw/nftw to fall back on when the host C library decided not to implement the obsolete calls.

[GReagle]

I think that nftw() is not obsolete.

[gvvaughan]

You’re right, thanks for checking. Let’s just add a thin wrapper for ntfw in a new ftw module then, and avoid all the Lua backfill code that would have been required for either of my suggestions above :-)