#### Steps to reproduce: - open Inkscape - Create and export to plot a multi pen plot with the Extensions-Export-Plot This is NOT the same as saving a .svg as .plt as this does not respect pen layers You will need to do a serial dump to see what is going on ( or hook up a plotter ) #### What happened? On pen change the plotter will return to the end of the previous path and make a single pen down - pen up movement before moving onto the beginning of the new path leaving a single dot from the new pen on the old path #### What should have happened? The pen should move to the beginning of the new path and start plotting without first making a dot on the old path #### Inkscape Version and Operating System: - Inkscape Version: ... Inkscape 0.92.4 (5da689c313, 2019-01-14) - Operating System: … Windows 10 - Operating System version: … 1904 ##### Example file: This is what is currently produced IN;FS2;SP1;PU2249,2395;PD2249,3517,3476,3517,3476,2395,2249,2395;SP2;PU2249,2395;PD2249,3517,3476,3517,3476,2395,2249,2395;SP3;PU2249,2395;PD2249,3517,3476,3517,3476,2395,2249,2395;PU;SP0;0,0; This is what should be produced (note the PU; command before the ;SP) IN;FS2;PU;SP1;2249,2395;PD2249,3517,3476,3517,3476,2395,2249,2395;PU;SP2;2249,2395;PD2249,3517,3476,3517,3476,2395,2249,2395;PU;SP3;2249,2395;PD2249,3517,3476,3517,3476,2395,2249,2395;PU;SP0;0, ##### To Note: HPGL remembers the last pen state before each pen change. If the pen change command directly follows a pen down movement, then the new pen will first try to resume the previous pen sate ( down ) before receiving commands to lift pen and move to beginning of new path. The result is a dot at the end of the old path from the new pen ##### Possible Solution https://gitlab.com/inkscape/extensions/-/blob/master/hpgl_encoder.py#L342 `self.hpgl += ';PU;SP%d' % pen` Not the most elegant solution, but the simplest