Support cutting and pasting all but one groups in a set of linked groups

[hemebond]

System Information

TrenchBroom v2023.1-RC2 Release Linux-ubuntu-22.04
Qt 5.15.8

Expected Behavior

Cutting and pasting a linked group should retain its link to the other linked duplicates

Steps to Reproduce

1. Create a group.
2. Create a linked duplicate of the group
3. Cut the new linked duplicate (Edit -> Cut)
4. Paste the linked duplicate (Edit -> Paste)

The pasted group is still a group but is no longer a linked duplicate, and changes are not propagated to or from it.

[kduske]

Why do you think it should behave that way?

[hemebond]

Why do you think it should behave that way?

Ah, if this is the intended behaviour then i can close the issue. I thought it might have been a regression.

Normally if I'm moving something over long distances it's easier to cut+paste rather than drag it over, so that's why I noticed.

[eGax]

If you cut something from a linked group it's no longer part of that group. IMO this to me is expected and normal behavior.

More so when dealing with special group types like linked groups. I actually tend to cut a linked group off then turn around to paste it to make a brand new group variation. I don't want it be reconnected to the group I originally cut it from.

[kduske]

First of all, we only get this problem if you cut and paste all but one of a set of linked groups. So let's say you have four linked groups, you select three of them, and cut and paste - the three pasted linked groups are still linked, but the fourth one that you left in the map is unlinked since TB cannot know if you're going to paste the other groups later.

Your case is a special case of this - the single group you cut and paste is unlinked - but not because you cut and pasted it. The reason is actually that if you cut all but one groups in a set of linked groups, the remaining group can by definition no longer be a linked group, so it gets unlinked.

I agree that it's quirky, but it kind of makes sense. Unfortunately there is no simple way to change this behavior.

[hemebond]

Oh, that is a bit weird. I just tested again, and yes, if you, e.g., cut+paste two linked duplicates out of a set of four, the links are maintained.

[eGax]

It is very weird.

[kduske]

Yeah, it is. I think we can eliminate this, too.

[kduske]

This has been fixed in 2024.1.