Jürgen,
I looked through the bugs - I don't know beyond doubt that
this is new, but FWIW, when attempting to create a "demo" nested
array, it didn't survive the )DUMP/)LOAD round-trip.
The statements below will recreate it (on gnu-apl 1.6):
a←2 3⍴'ABCDEF'
b←3 3⍴⍳9
c←○1
d←'⍫'
e←0
f←⍳0
g←7
h←'Hello World'
i←''
j←3 3⍴a b c d e f g h i
k←j
k[2;2]←⊂j
⍝ ---Observe!---
8 ⎕CR k
⍝ ---Now output/input---
)DUMP xyzzy
)LOAD xyzzy.apl
⍝ ---What happened to 2 3⍴'ABCDEF' at k[1;1] and the
nesting at k[2;2]?-----
8 ⎕CR k
I hope that this helps!
Thanks!
——Martin
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Martin R. Bartels