[aggr-] allow undo for aggregate-col/cols #2602
Merged
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After adding an aggregator to a column with
+
, it can't be removed withundo-last
. This PR adds undo.It also removes an old check for
hasattr(col, 'aggregators)
that is obsolete, now thatColumn.aggregators
hasbecome a property.
visidata/visidata/aggregators.py
Line 75 in bee4116