polygons with mid markers show 1 too many [Regression]

[phord]

OS: Windows XP
In this case, only 4 markers should show.
The 5th marker flashes on & off & rotates randomly as you rotate the polygon.
See the attached SVG file for a demonstation.

1. Create a new polygon.
2. Stroke style with a continious dash & 1px width.
3. Mid markers: Arrow1Lstart.

[Alvin Penner (apenner)]

confirmed on Windows with 0.47 pre1.
this is a regression relative to 0.46

[su_v (suv-lp)]

That seems due to a 'Optimized path data' regression: remove the last point in the XML editor and keep 'z' to close the path -> only 4 mid-markers are correctly displayed.

Path optimization was described in an earlier version of the release notes 0.47 as: «Inkscape used to always explicitly write the closing line segment to SVG for closed paths. For example: "M 0,0 L 1,0 L 1,1 L 0,1 L 0,0 z". With the improved SVG path data writing, Inkscape no longer generates this closing line segment, resulting in "M 0,0 L 1,0 L 1,1 L 0,1 z".»

Somehow the fix no longer works…
Related bug #399381 (which I prematurely closed as 'fixed' ;-)

[su_v (suv-lp)]

no longer reproduced with Inkscape 0.47+devel r9454 on OS X 10.5.8

[jazzynico (jazzynico)]

Reproduced on Windows XP, Inkscape 0.47.
Not reproduced with 0.48, 0.48.3.1 and trunk revision 11652.