Posted by dxli on Jan 07, 2016; 12:18am
URL: https://forum.librecad.org/Converting-Selection-to-Polyline-tp5712769p5712789.html

It's great to know that it works for you.

As you can see this quickly gets into topological structure of polylines.

1, can we extend polyline to support graph/contours better?
2, a new GUI action is more appropriate to support.

Do you want to do some coding?

gravo-mm wrote

Well, I've tried it out and it works exactly as I hoped it would.

As for the TODO in Line 56 of your commit:
Why not give the user the opportunity to select the starting point?
Ask the user to "select starting entity". If the user doesn't feel the need to make the choice,
the user can be given the possibility to simply press enter and use the current selection method instead.