Dragging a header boundary inside a selection of whole columns (rows)
sized only the current area, so with B, D and F Ctrl-selected only the
last-selected one changed. The drag now targets every whole-column
(whole-row) area of the selection, as Excel does; lines outside the
selection, and partial-cell areas, keep their size.
home.columnWidth / home.rowHeight accept a comma-separated list of
areas ("B:B,D:F") so the drag stays one command and one undo step.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
derechopiano