[fpc-pascal] Set format

[Marco van de Voort]

> On 14 nov 2006, at 13:20, Marco van de Voort wrote:
> 
> >>> is it possible to keep a legacy reader in place ? That way it'll be
> >>> easy to read old data and convert it to the new format and have
> >>> little impact on historic data. If you happen to work on a big
> >>> endian machine you could then do a once-off conversion.
> >>
> >> We'd definitely provide a conversion function to convert from the old
> >> format to the new one, yes.
> >
> > {$packset} support ?
> 
> That does not allow for format conversion (even if it allows you to  
> set the old set format).

I was a bit brief, but I was thinking a bit about my usage of sets in the
past, which was usually part of a record.  So more about different sizes,
not endian conversion.

It would then be possible to have the same record-with-set twice with
different formats, and generate conversion routines for the datastructure.

However this would only matter if you have a gigantic number of these kind
of records. So nevermind.

(For me no conversion needed btw, due to the Delphi<->FPC difference I
stayed away from sets in files)