How to make append works like set ?

[Hello]

>> a: 'b
== b
>> set a ""
== ""
>> b
== ""
>> append a "Hello"
** Script Error: append expected series argument of type: series port
** Near: append a "Hello"
>>

[Sunanda]

The problem is that you want to append to the string that is assigned to the word 'b, using the word 'a

'a is not a string -- it's a word assigned the value of 'b.

See:

a: 'b
set a ""

print [type? a mold a]
== word b
print [type? b mold b]
==string ""


So you need to add code to overcome that level of indirection. One way:

set a append get a "hello"

print [type? a mold a]
== word b
print [type? b mold b]
== string "hello"


Or just make a and b the same string:

b: copy "123"
a: :b