...

One thing: right now subsequent arrow-key movements are stored as

separate

...

undo steps. I'd like to combine all adjacent moves in one direction

(only

...

horizontal or only vertical) in one step. Is there already a mechanism

for

...

that, or do I have to dig into the undo system to implement it?

Yes, there's already a facility present for that: sp_document_maybe_done().

Thanks for the pointer. I tried this but it did not work until I replaced:

doc->actionkey = NULL;

by

doc->actionkey = key;

in sp_document_maybe_done(). This fix seems logical to me, but it's not my code so please confirm that it's correct. I've just committed a version that puts subsequent same-direction arrow-key movements into one undo step (in both selector and node edit) so you can test how it works. Previously, maybe_done was only used in the item properties dialog (which is planned for elimination btw).

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