[Octave-bug-tracker] [bug #39257] handles to nested functions are not yet supported

[Lachlan Andrew]

Follow-up Comment #6, bug #39257 (project octave):

The attached patch allows a handle to be taken of a nested function, and
prevents that handle being exported (either as a return value or through a
global variable) out of the scope in which the shared variables are defined.

This does *not* allow constructs like the one in comment #3.  However, it
should allow GUIs made through Guide.  Please report back here if they cause
problems.

I plan to check how Matlab handles constructs like comment #3.  Specifically,
I want to know if it use the most recent value assigned to x, including
subsequent calls to test_closure, or if it sticks with the value of x at the
function exit.  In the former case, we could just make  x  persistent.  In the
latter case, the handle would somehow have to keep its own copy of x, like an
anonymous function does.

(file #36269)
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Additional Item Attachment:

File name: bug_39256_local.cset           Size:9 KB


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