Brilliant, thanks for the quick turnaround!
Not only is the bug fixed, I can also now append a Z-coordinate (or anything else) to the end of each line in a selection, such as a group of 2D vertices pasted from Inkscape.
(Of course, I realized I can even save a further step by adding the missing coordinate in the X position, in the same step where I add the !LPE VERTEX meta. So I can Find/Replace the SVG lineto commands "L " with the string "0 !LPE VERTEX 0 " and voila! instant 3D vertices.)
Not only is the bug fixed, I can also now append a Z-coordinate (or anything else) to the end of each line in a selection, such as a group of 2D vertices pasted from Inkscape.
(Of course, I realized I can even save a further step by adding the missing coordinate in the X position, in the same step where I add the !LPE VERTEX meta. So I can Find/Replace the SVG lineto commands "L " with the string "0 !LPE VERTEX 0 " and voila! instant 3D vertices.)