add an alternative logic

[zcsahok]

(will add description later)

[airween]

Thank you Zoli, you convinced me :).

[zcsahok]

The goal is to make clear on the air what is actually confirmed.
The logic is as follows:

• calls are split into 5 parts: alt-prefix, prefix, area, suffix, alt-area. The alt-x parts are optional.
• if one of these or two consecutive change, then send it/them. Always send a changed part fully.
• always send at least 2 chars. If needed pad from a neighboring field.
• if more than two or non consecutive parts change, then send full call.
• some special handling is added for the optional alt-x parts, as they can either appear or get removed.

Added a bunch of examples to see how it behaves. The trailing * shows that the result is different from the original algorithm.

[airween]

Hi Zoli,

The goal is to make clear on the air what is actually confirmed. The logic is as follows:

* calls are split into 5 parts: alt-prefix, prefix, area, suffix, alt-area. The alt-x parts are optional.
* if one of these or two consecutive change, then send it/them. Always send a changed part fully.
* always send at least 2 chars. If needed pad from a neighboring field.
* if more than two or non consecutive parts change, then send full call.
* some special handling is added for the optional alt-x parts, as they can either appear or get removed.

yes, I reviewed the code and understood completely. Nice idea and nice solution, congrats!

Added a bunch of examples to see how it behaves. The trailing * shows that the result is different from the original algorithm.

yes, that was clear for me too. I added yet another example in the comment under the original PR, just check how the function behaviors with a single shorter call.

Thanks for all, I'll update my PR soon, considering your other comments too.

[zcsahok]

OK. I'll still rework it a bit, introducing a struct for the split call parts. But that I can add to the other PR directly, too.

[airween]

Thanks Zoli, I'm going to merge it, and replace my PR under the tlf too.