[Octave-bug-tracker] [bug #52568] str2func can't create a "lazy" handle to function which does not exist when str2func is executed

[John W. Eaton]

Follow-up Comment #9, bug #52568 (project octave):

What does Matlab actually do with a handle to a nonexistent function?  Is it
possible for the handle to become valid, for example if you cd to a directory
where the named function exists?  Once it is valid, does it stay defined the
same way as a function handle that is valid when it is created?  For example,
what does Matlab do for this:


cd /dir/without/foo.m
fh = @foo  %% no foo.m in current dir or loadpath
fh ()      %% presumably an error
cd /dir/with/foo.m
fh ()      %% calls function defined in /dir/with/foo.m?
cd /dir/without/foo.m
fh ()      %% error or calls previous foo.m?


If the last line is an error, then I guess a function handle to a n initially
non-existent function behaves more or less like an alias?

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