Hi,
Playing with partial enclose (formally enclose with axis) as follows
gave me the following segfault
A←2 3 4⍴⍳24
A
1 2 3 4
5 6 7 8
9 10 11 12
13 14 15 16
17 18 19 20
21 22 23 24
⊂[3 2 2]A
====================================================
SEGMENTATION FAULT
----------------------------------------
-- Stack trace at main.cc:85
----------------------------------------
0x7f5ffafd1f45 __libc_start_main
0x446105 main
0x56b48d Workspace::immediate_execution(bool)
0x487d29 Command::process_line()
0x487dcd Command::do_APL_expression(UCS_string&)
0x492268 Executable::execute_body() const
0x51ff40 StateIndicator::run()
0x4c5649 Prefix::reduce_statements()
0x4c4895 Prefix::reduce_MISC_F_C_B()
0x4d40f7 Bif_F12_PARTITION::eval_XB(Value_P, Value_P)
0x4d3de3 Bif_F12_PARTITION::enclose_with_axes(Shape const&, Value_P)
0x7f5ffbdce330
0x44b29a
========================================
====================================================
Process apl exited abnormally with code 3
Ala'a