New guide origin selection has precedence over snapping for drawing

[LucaDC]

I'm experimenting a problem with the new guide origin (Knot if I correctly understood what has been done).
If you select for example the circle tool or the rectangle tool and want to start from a guide origin (something I almost always do when drawing rectangles or circles), with snapping enabled of course, if you click the starting corner over the guide origin the guides gets selected and you move the guide in spite of drawing.
To avoid this, you have to exploit the snapping range so you snap to the guide origin without being over the little circle.
Now I don't have an old version of Inkscape to check the differences but I'm pretty sure that I've never had such problem with the previous origin (CtrlPoint).
IMHO this is a serious issue for guides usability.

Inkscape rev.14536, Windows XP SP3.
I suppose rev.14523 is the one that introduced the new behavior but, as written before, I didn't check.

[su_v (suv-lp)]

Reproduced with Inkscape 0.91+devel r14536 on OS X 10.7.5.

Based on tests with archived trunk builds:
- not reproduced with rev <= 14522,
- reproduced with rev >= 14527;
the regression (snapping to guide origin no longer works) was introduced when switching the guide anchor to SPKnot in rev 14523:
* Rev 14523: Remove CtrlPoint and replace with SPKnot
https://bazaar.launchpad.net/~inkscape.dev/inkscape/trunk/revision/14523

[su_v (suv-lp)]

Somehow related to this one and to bug #1526717 (comment 6): in the select tool context (with default new prefs, in a default new document), when grabbing a guide at its anchor and dragging it e.g. to snap to a rectangle corner, to the grid or to another guide, no snapping occurs. It works as expected when grabbing the guide elsewhere.

[Liam P. White (liampwhite)]

Fixed by merge of r14592.

[jazzynico (jazzynico)]

Marking Fix released (the issue affected devel versions only).