Hi,
)clear
CLEAR WS
⎕CR ' '
==============================================================================
Assertion failed: size()
in Function: back
in file: UCS_string.hh:322
C/C++ call stack:
----------------------------------------
-- Stack trace at Assert.cc:75
----------------------------------------
0x7f144d52a30b __libc_start_main
0x7f144d52a248
0x403e50 main
0x5d7117 Workspace::immediate_execution(bool)
0x45eeb7 Command::process_line()
0x45f112 Command::process_line(UCS_string&, std::ostream*)
0x46172a Command::do_APL_expression(UCS_string&)
0x461a1e Command::finish_context()
0x48a2f7 Executable::execute_body() const
0x56ecee StateIndicator::run()
0x4c6817 Prefix::reduce_statements()
0x4c7777 Prefix::reduce_MISC_F_B_()
0x4fbd87 Quad_CR::eval_B(Value_P) const
0x4fbde9 Quad_CR::do_eval_B(Value const*, bool)
0x476ab6 UCS_string::back()
0x4226d1 do_Assert(char const*, char const*, char const*,
int)
========================================
========================================
SI stack:
Depth: 0
Exec: 0x37523420
Safe exec: 0
Pmode: ◊ ⎕CR ' '
PC: 3 (4) RETURN_STATS
Stat: ⎕CR ' '
err_code: 0x0
==============================================================================
With non exiting names the result is an empty matrix:
⍴⎕CR 'A'
0 0
Then:
⎕CR '' or ⎕CR ⍬
prints help info.
This is a bit "overloaded':
What happens is:
The assignment
bodies ← ⎕CR¨ 'Name1' '' 'Name2'
will print the help and
⍴¨ bodies
returns like
(n m) 0 (n m)
Further more:
The three cases have the following results:
1:
0 0 ←→ ⍴ ⎕CR 'none_exiting_name'
and
2:
0 0 ←→ ⍴ ⎕CR 'invalid_name'
the "special case"
3:
STACK TRACE ←→ ⍴ ⎕CR ' '
for 2: and 3: i propose for the output to result in ⍬:
⍬ ←→ ⍴ ⎕CR 'invalid_name'
and change of⎕CR '' or ⎕CR ⍬ to
'' ⎕CR '' or '' ⎕CR ⍬ to suppress terminal output.
Best Regards
Hans-Peter
