Attached patches are not very interesting, but I'm trying to keep changes incremental in case I break something.

The first updates how filtering is done on the various FGPositioned query functions - both spatial and ident-based. The query interface is very much still a work in progress - it's evolving as I convert users of the various foo_list classes to use FGPositioned. The patch is part of that evolution.

The second patch updates the KLN-89b / DCLGPS code to use FGPositioned for all Navaid/Airport queries. I'm aware that (almost?) no-one is using the KLN-89b code, due to lack of maintenance / documentation / whatever, but it's quite useful for me to keep it around, because it serves as a good example of real-world queries that might need to be made.

As always, if some benevolent person could test and/or apply these, that would be appreciated.

Regards,
James

Attachment: dclgps-use-positioned.patch
Description: Binary data

Attachment: positioned-filtering.patch
Description: Binary data

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