Bug: Curve.Simplify requires RebuildArcs to create line

Rhino Developer
1

In 8.13.24317.13001, 2024-11-12,

running this script 
#! python 2  Must be on a line number less than 32.
from __future__ import absolute_import, division, print_function, unicode_literals

import Rhino
import Rhino.Geometry as rg
import scriptcontext as sc

def main():

    cso = rg.CurveSimplifyOptions

    res, objref = Rhino.Input.RhinoGet.GetOneObject(
        "Select curve",
        acceptNothing=False,
        filter=Rhino.DocObjects.ObjectType.Curve)
    if res != Rhino.Commands.Result.Success: return

    rgC_In = objref.Curve()

    for options in (
        cso.RebuildLines,
        cso.RebuildArcs,
        cso.RebuildLines | cso.RebuildArcs):

        print("\nCurveSimplifyOptions: {}".format(options))

        rv = rg.Curve.Simplify(
            rgC_In,
            options=options,
            distanceTolerance=sc.doc.ModelAbsoluteTolerance,
            angleToleranceRadians=sc.doc.ModelAngleToleranceRadians)

        print("Result: {}".format(type(rv)))

if __name__ == '__main__': main()

on the (linear within half of model tolerance) spline in
Curve_Simplify_RequiresArcOpt.3dm (41.9 KB) ,
the results are

CurveSimplifyOptions: RebuildLines
Result: <type ‘NoneType’>

CurveSimplifyOptions: RebuildArcs
Result: <type ‘ArcCurve’>

CurveSimplifyOptions: RebuildLines, RebuildArcs
Result: <type ‘LineCurve’>

Please fix Curve.Simplify so that the first result is also a LineCurve.

(I tested various arguments for distanceTolerance and angleToleranceRadians parameters but didn’t find any where just RebuildLines outputs LineCurve.)