A Shift-drag marquee only ever added to the selection, so there was no way to
take some of the selected objects out with it. As in Illustrator, Shift-drag
now toggles what the marquee reaches: the selected ones are deselected, the
others selected, the rest of the selection stays.
- Selection tool: the Shift marquee runs select.toggle, which now also takes
{ids} (each one toggles).
- Direct Selection and Group Selection: the Shift marquee toggles the anchors
inside it (select.anchorsMany mode "toggle"); a path left with none leaves
the selection, one with all of them is selected whole again.
- select.anchorsMany takes mode "set"|"add"|"toggle"|"subtract" (add: true is
still mode add). Adding anchors of a path selected whole keeps it whole, and
anchor references outside the path are ignored.
- Lasso: Shift adds and Alt subtracts through the same command, so an Alt lasso
no longer drops selected type, groups and other non-path objects.
- Tests at the tool, engine (Session::pointer) and MCP (pointer_gesture) levels,
command sweep cases for the new modes; docs/mcp.md and ROADMAP.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>