ensure map objects call setModified in copy method to play nicely with Undo

sirjuddington / SLADE

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ensure map objects call setModified in copy method to play nicely with Undo #1588

Closed thezerobit closed 8 months ago

thezerobit commented 8 months ago

These copy methods are used by the "paste properties" action and this resolves some bugs with using Undo after those actions, including https://github.com/sirjuddington/SLADE/issues/1587 which I filed earlier.