umputun / revdiff / 25544443680

90%

master: 90%

Pull #173

github

feat: decouple mouse wheel from diff cursor

wheel events on the diff pane now scroll the viewport only.
the diff cursor stays on its current logical line and is
pinned to the visible edge if scrolling pushes it off-screen.
matches less/vim mouse semantics.

before, every wheel notch advanced the cursor by the wheel
step and dragged the viewport along to keep the cursor row
stable. under trackpad momentum that felt automatic and
slightly inertial because each event re-rendered the diff to
move the cursor highlight. the new path skips the re-render
when the cursor stays in place, so plain scrolling is just a
viewport offset change.

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