Another CAS.part() oddity

[compsystems]

Xcas with GIAC kernel
[]==[] [enter] returns true , ok compare two objects and these are equal

HP-Prime with GIAC kernel, and CAS MODE
[]==[] [enter] returns 1 =( Synonym of true, Although I do not know why the history shows [] as [[]] it seems to be another BUG related to the visualization of objects in the history view

[up][up][copy] ([]) = [] [enter] [[]] ??
This is an BUG with the COPY function that I already reported a long time ago and do not a solution.

Sometimes copy well
[]==[] [enter] [up][up][copy] (([])==[]) [enter] true



part('RANDOM',2) [enter] "error the first argument must be a valid math expression"

part('RANDOM(a)') [enter] 2, another BUG founds, must return 1
part('RANDOM(a)',0) [enter] "of" Another BUG founds, must return "RANDOM"
part('RANDOM(a)',1) [enter] BUG, a ok

part('5!') [enter] 1 ok, one parts
part('5!',0) [enter] "factorial" ok (operator)
part('5!',1) [enter] 5 ok (operating)

part('abs(-a)') [enter] 1 ok, one parts
part('abs(-a)',0) [enter] "ABS"
part('abs(-a)',1) [enter] -a ok

part(-a) [enter] 1 ok, one parts, - it is an internal sign
part(-a,0) [enter] "-" ok
part(-a,1) [enter] a ok

test online part cmd
session Xcas