[Octave-bug-tracker] [bug #46891] inputname fails in OO @classfile

[Oliver Heimlich]

Follow-up Comment #1, bug #46891 (project octave):

According to the help of inputname it is intended that it returns an empty
string.  Also the display method should not display the inputname and an equal
sign if inputname returns an empty string.

For comparison:
````
s = struct ("a", 1, "b", 2);
display (s.a)
     1    <-- see, no inputname printed
````

So the problem here is in the @FIRfilter/display.m method, which should itself
do (again causing the same problem one level higher)
````
fprintf ("%s.polynomial = %s", inputname (1));
````

In general it is impossible to implement a correct display method in an
m-file, because you do not have access to the current level of indentation
(which you will need when the object is displayed in a struct or cell array).
The best that I could come up with is this:
https://sourceforge.net/p/octave/interval/ci/0d2d616f126b3fa5257b7d70455704e6f4e4c25a/tree/inst/@infsup/display.m#l75
(it works for cell arrays on the first level of indentation)

Finding this kind of regressions is very simple using the doctest package. It
is still on my to-do list to migrate its functionality into the `test`
function in Octave core.

    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?46891>

_______________________________________________
  Nachricht gesendet von/durch Savannah
  http://savannah.gnu.org/