all about strings

[compsystems]

SUPPRESS & INSERT should be included, operate on strings, although they can operate in other objects, should not be excluded.

suppress
Returns list or string without the element of index n;
L1:=suppress(L1,n) or L1.suppress(n).
suppress(Vect||Str,Intg(n))

although it is also necessary to clarify that it is affected by the reserved variable Index

index:=1:; suppress("-x^3",1) returns "Done","x^3"
index:=0:; suppress("-x^3",1) returns "Done","-^3"

index:=0; [enter]
s1:="-x^3"; s1. suppress(0); s1.suppress(0) => "[] index start 0","-x^3","x^3","^3" // ok

bug
up up copy
equal(s1,"-x^3"), s1.(suppress(0)), s1.(suppress(0)) =>
equal("^3","-x^3"),"3",""