[Octave-bug-tracker] [bug #58411] cellfun with "ErrorHandler" returns wrong message

[Rik]

Follow-up Comment #2, bug #58411 (project octave):

This bug has two parts.  The fact that the last value has nonsense in it,
rather than NaN, is due to the "ErrorHandler" routine itself.  The function
"foo" cycles over the range 1:nargout.  However, when the calling form is 


cellfun (...)


nargout is equal to 0 so no value is assigned by the ErrorHandler.  This is
why the invocation


x = cellfun (...)


works because nargout is equal to 1 in this case and the for loop works
correctly.

However, what should happen, according to Matlab, is that an error gets thrown
because the function is supposed to supply a value.  Matlab emits an error
that says that "UniformOutput" is true (default) but the function failed to
produce a value for index 3.

By setting "UniformOutput" to false, both Matlab and Octave produce the
correct result


cellfun (@factorial, {1,2,-3}, "ErrorHandler", @cellfoo, 'uniformoutput',
false)




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