UniCollapse

This tool is great, but it doesn't work with line object. I mean when I Ctrl+RMB and create a line from scratch, even convert that line to editable line it still doesn't work. It only works when I add a "edit spline" modifier above the line in modify list and collapse modifier, afterward I got a editable spline, and it works thereafter.

But can the script being adjusted to work with line/spline ect...?

When I first time use this script and forgot about it name (just install+set hotkey once and forget it was a 3rd party script). After I Windows reinstall I've trouble to find out it again but when I find it out here, I tried with Line object and it doesn't work at all. So I started to doubt myself if this was "that" script which I used before... but turns out it was, just it doesn't work with native 3d max line object, only editable splline/edit spline.

I fixed it

Thanks, I didn't even notice you reply this and fix the script. I gotta try out it.

Awesome script, works like a charm!

To work with Edit Spline modifier you can use this code for script:
fn ESCollapse = (
if classof $ == SplineShape do (if subobjectLevel == 1 then (
macros.run "Editable Spline Object" "ESpline_Fuse_Vertex"
macros.run "Editable Spline Object" "ESpline_Weld"))
)
if finditem #(SplineShape, line) (classof $.baseObject) !=0 do (
if showEndResult == true then(
showEndResult = false
ESCollapse()
showEndResult = true
)
else( ESCollapse() )
)

:)