Undo Buffer kind of strange (R872)

I copied two connected parts and found some strange behaviour:

bug1: some of the pins of the copy got new wiring, when the copy overlays another component.

bug2: when moving the copy copy without dropping (only drag), and then trying to undo, the wiring gets mixed up. It looks like the position where it got dragged is also stored in the undo buffer, but only for the wires.

Some students also mentioned, that they got after copying and undoing another copy over the copy. However, I was not able to reproduce this bug.

Example of the reproducable bugs see here:
https://wiki.mexle.org/_media/simulide_bugs/2022-01-22_01-27-42.mkv

I think this is related to "Auto-connect".

Maybe the auto_connect feature should use some other key or a different method.
Let me think about a solution.

This should be solved at Rev 878.

In any case I will change the key for auto-connect.
Using Ctrl is not the best choice.
I think we could use a combination like +C.
What do you think?

How does activating Auto connect work? Does this mean after + C for copy one has to press +C before +V for inserting?

How does activating Auto connect work?

Auto connect just connects things automatically.
Currently it's done by pressing Ctrl and moving the component you want to connect.
Before it only connected pins.
Now also can connect to wires:



The tricky part is that you need to move the component in order to connect it.
This is useful if you want to connect just 2 pins:
Just press ctrl, move the component close the other one and they will connect.
When there are many pins is not that easy and often connections are wrong if you are not careful.

The problem is that if you press Ctrl and move some component, their pins will try to connect to everything they find in the way.

This method is fast and easy to use if you are aware of it and don't press Ctrl and move things unless you want to connect.
But if you don't know about it it can be problematic.

So I'm thinking to change the keys to something else than just Ctrl.
Also thinking about other method that does not involve moving the component.

... I just realised, that simulide has this "<ctrl> = connect to nearby pins" feature..

Therefore, the user (=me) made the mistake... I do copying with one finger continuously on the <ctrl> key.  

I think using <shift> instead of <ctrl> for activating this feature would be better. By this, also false fingering user do not mistakenly activate the feature (some students had this problem, too).

Therefore, the user (=me) made the mistake... I do copying with one finger continuously on the key.

I think using instead of for activating this feature would be better. By this, also false fingering user do not mistakenly activate the feature (some students had this problem, too).

Yes, using only is not an smart solution and most people don't know about this feature.
Even only using could create problems in some case.
Better use a combination, this is slower to use, but is better than having "random" connectors appearing out of the nothing.

Auto-connect changed to + Move at Rev 977.
Also some checks added to avoid interferences when loading, pasting, etc.