Re: Two documentation suggestions

[Oliver Kroth <oliver.kroth@...>]

This is neither a Lua nor a C thing. It is actually a peculiarity of 
CP/M / MSDOS / Windows, which have two modes for reading files:

A text mode where a newline is "corrected" to CR-LF, and the end of the 
file is at the first ^Z ('\x1A'),
and a binary mode where this processing is not done.

When you open a PNG file, you will by design (of the file) need binary 
mode on those systems.

Oliver

> Two
> ===
> The documentation for `io.open` mentions opening a file in binary mode:
>
> > The mode string can also have a 'b' at the end, which is needed in some
> > systems to open the file in binary mode.
> Perhaps this explanation is enough for someone who knows C. But as
> someone who is simply a Lua user (not an embedder), this sentence is
> vague. Is it possible to add more detail or is this one of the
> implementation-defined things?
>
> Best regards,
> Aman