[Octave-bug-tracker] [bug #48471] Ans output lost with redirection

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?48471>

                 Summary: Ans output lost with redirection
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Mon 11 Jul 2016 04:41:53 PM UTC
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Matlab Compatibility
                  Status: None
             Assigned to: None
         Originator Name: Joel
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.2
        Operating System: Any

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Details:

When I try to redirect a function evaluation with an "ans" output, it appears
to get lost for Octave (but not MATLAB). Here is an illustration:

% bar.m
function v = bar()
   v = 42;
end

% baz.m
function varargout = baz()
   for i=1:max(1,nargout) % always ans
     varargout{i} = 42;
   end
end

% foo.m
function varargout = foo(c)
   if c
     [varargout{1:nargout}] = bar();
   else
     [varargout{1:nargout}] = baz();
   end
end

Test script with results for MATLAB and Octave
% test_foo.m
bar % ans=42 in both MATLAB and Octave
baz % ans=42 in both MATLAB and Octave
a = foo(true);
foo(true);
foo(true) % ans=42 in MATLAB, nothing in Octave

a = foo(false);
foo(false);
foo(false) % ans=42 in MATLAB, nothing in Octave
[a,b] = foo(false);




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