bpo-39392: Turtle overlap fill depends on OS (#18223)

terryjreedy · web-flow · commit 2824c45a0a02 · 2020-01-27T18:41:18.000-05:00
Whether or not overlap regions for self-intersecting polygons
or multiple shapes are filled depends on the operating system graphics,
typeof overlap, and number of overlaps.
diff --git a/Doc/library/turtle.rst b/Doc/library/turtle.rst
@@ -1051,6 +1051,11 @@ Filling
 
    Fill the shape drawn after the last call to :func:`begin_fill`.
 
+   Whether or not overlap regions for self-intersecting polygons
+   or multiple shapes are filled depends on the operating system graphics,
+   type of overlap, and number of overlaps.  For example, the Turtle star
+   above may be either all yellow or have some white regions.
+
    .. doctest::
       :skipif: _tkinter is None
 
diff --git a/Misc/NEWS.d/next/Documentation/2020-01-27-18-18-42.bpo-39392.oiqcLO.rst b/Misc/NEWS.d/next/Documentation/2020-01-27-18-18-42.bpo-39392.oiqcLO.rst
@@ -0,0 +1 @@
+Explain that when filling with turtle, overlap regions may be left unfilled.

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+Explain that when filling with turtle, overlap regions may be left unfilled.`