[fpc-pascal] Dos unit for Windows

[Marco van de Voort]

Op 2019-01-30 om 14:18 schreef Marco Borsari via fpc-pascal:
> I noted that two bytes are reported as a result, thought
> IIRC in DOS only the low byte is affected while the high one
> should be zero, so the assignment would become
>
>     attr:=l and $ff;
>
> Waiting for your comments,


Windows attributes can be > 8-bits, see e.g. 
https://docs.microsoft.com/nl-nl/windows/desktop/FileIO/file-attribute-constants.

https://www.freepascal.org/docs-html/rtl/dos/getfattr.html however says 
that they _can_ be examined for a list of attributes, not that others 
might not be in it. The example code also only tests for attributes, and 
never does something with all bits.