Nodes rotation center doesn't snap to grid

[Jihugen]

When rotating a group of nodes, I can't snap the center of rotation to the grid (as it does when working with objects).

To reproduce this bug / missing feature:
- be sure that the "Show transformation handles for selected nodes" option is activated
- select several nodes
- clic on one selected node to display rotation handles instead of scale handles
- drag the cross mark to position the center of rotation --> the cross doesn't snap to the grid.

I'm running Win XP SP3.
I have tried with Inkscape 0.48.0 r9654 (stable version) and inkscape 0.48+devel r9832 (file inkscaper9797-1009282106.7z on the Win32 Snapshots page).

[su_v (suv-lp)]

reproduced with Inkscape 0.48 and 0.48+devel r9854 on OS X 10.5.8

[su_v (suv-lp)]

Not only the rotation center doesn't snap to grid or other snap targets - none of the transformations do either (compared to the transforms with the select tool).

Related to or duplicate of
Bug #590261 “[Node tool] Scale/stretch/skew transforms with transform handles don't snap”:
<https://bugs.launchpad.net/inkscape/+bug/590261>

[Krzysztof Kosinski (tweenk)]

There is a bug with constrained snapping which persists in stable, but is fixed in trunk, it should be reported separately

[su_v (suv-lp)]

trunk: r9960
0.48.x: r9749

[su_v (suv-lp)]

@Krzysztof
> There is a bug with constrained snapping which persists in stable,
> (…), it should be reported separately

Can you give me a hint what you are referring to? I have rebuilt trunk (r9962) and the branch (0.48.x r9749); in the branch version, snapping of the rotation center seems to work fine in initial tests (to grid, guides, nodes...), same for constrained dragging in x- or y-direction and constrained rotating of the selected nodes.