BezPath 0-length stroke

[DasLixou]

Hello! I want to make a scribble / writing app and am using the new vello sparse strip thing with the fast_stroke kurbo branch patched in.
Now, I want to present a "dot" when the user started writing even without moving, so I create a BezPath with [MoveTo(p), LineTo(p)] but that doesn't show anything. Even with LineTo(p + f64::EPSILON) it doesn't work, only with + 0.001 which makes it seem ugly when I don't go to the bottom right with the stroke but for example the top left, as the start is now wrong for a short bit.
Can we please get an option to allow 0-length paths?

[PoignardAzur]

Can we please get an option to allow 0-length paths?

I don't think it needs to be an option.

I'm 90% sure 0-length paths with Cap::Square and Cap::Round should always be displayed. Only zero-length paths with Cap::Butt could be elided.

[chris-morgan]

In SVG, a path must have at least two points, but they can be collocated.

• m 1,1 will not draw anything.
• m 1,1 h 0 will draw:
  • nothing if stroke-linecap is butt;
  • a circle if it’s round; or
  • a square if it’s square (unrotated, because $atan2(0, 0) = 0$).