Where have markers to be drawn in custom-shapes?

[Regina Henschel <regina.henschel@libreoffice.org>]

Hi all,

I cannot determine where to draw markers for the draw:enhanced-path of a 
custom shape.

A file with the following examples is attached.

Examples
A Consists of one sub-path, which is closed by command Z
M 25 10 L 40 15 30 25 Z

B Consists of one sub-path, with first point = last point, but no command Z
M 25 10 L 40 15 L 30 25 L 25 10

C Consists of one sub-path, with fist point <> last point and no command Z
M 25 10 L 40 15 30 25 25 11

D Consist of one line segment before sub-path, which is closed by 
command Z, and one line segment after
M 5 5 L 20 10   M 25 10 L 40 15 L 30 25 Z   M 30 10 L 50 15

E Consist of one line segment before sub-path, with first point = last 
point, and one line segment after
M 5 5 L 20 10   M 25 10 L 40 15 L 30 25 L 25 10   M 30 10 L 50 15

F Consists of two separate line segments, then set end, then two 
separate line segments.
M 5 5 L 20 10   M 25 10 L 40 15   N   M 55 5 L 70 10   M 75 10 L 90 15

Where have marker-start and marker-end to be drawn?

SVG is no help here: It has no sets of sub-paths. It draws marker-start 
only on first vertex and marker-end on last vertex, but has marker-mid 
for the other vertices in addition.

Existing applications are neither a help. They do not only behave 
different compared to other applications but are inconsistent in 
themselves or obviously buggy.

Kind regards
Regina

Attachment: Marker Examples.odp
Description: application/vnd.oasis.opendocument.presentation