why does F9 key not evaluate in R2017b ?

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In previous versions, after highlighting some text in the editor window, hitting F9 would evaluate the expression and print the answer in the command window. Not so in R2017B, it only repeats the text, with no attempt at evaluation.

Accepted Answer

Elizabeth Reese
Elizabeth Reese on 5 Dec 2017
You can check what F9 is bound to for a shortcut in the preferences of MATLAB. It is possible that the shortcut is not set to the default or that there is another shortcut that is conflicting with the default.
  3 Comments
David Mellinger
David Mellinger on 25 Feb 2020
I have this same problem, except that mine has automagically fixed itself. I rebooted my machine and restarted MATLAB, without success. Any suggestions? I really miss F9!
Malte Schüler
Malte Schüler on 23 Jan 2023
I just had the same problem although my Matlab preferences were fine. It turned out another software running in background used F9 as shortcut, too. After disabling that shortcut, Matlab's shortcut worked again.

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