After updating to version 13.1 on macOS 12.4, I discovered that the keyboard shortcut for typesetting a fraction (Insert > Typesetting > Fraction) has changed. In previous versions, the shortcut was Ctrl + /, but now is Ctrl + ´. The old shortcut doesn't do anything in 13.1.

I tried following this answer to change the keyboard shortcut. To my surprise, line 65 of the file KeyEventTranslations.tr reads

Item[KeyEvent["/", Modifiers -> {Control}], "Fraction"], 

which is just the old shortcut. So why doesn't the old shortcut work and how can I restore it?

Edit: I switched to the US keyboard layout, and the old shortcut returned. The problem therefore seems to be with my keyboard layout (Finnish/Swedish) and feels like a bug to me. I'm reporting this to WRI.

  • $\begingroup$ ctrl+/ builds fractions for me on my Mac, OS v12.3, MMA v13.1. ctrl+' does nothing I can see. And when I look at the menu item Insert > Typesetting > Fraction it sure looks like ^ / to me. $\endgroup$ Commented Jul 11, 2022 at 10:37
  • $\begingroup$ @HighPerformanceMark Thanks for confirming that, the problem seems to be related to my (non-US) keyboard layout; see the edit. $\endgroup$
    – imas145
    Commented Jul 11, 2022 at 11:05
  • 1
    $\begingroup$ I see. I have a non-US keyboard too, but a UK one so there is a familial resemblance. Of course, if you tell us here what non-US keyboard you are using you might get more useful comments, even an answer, than I can provide. $\endgroup$ Commented Jul 11, 2022 at 12:06
  • $\begingroup$ I've added the keyboard layout to the question for reference. $\endgroup$
    – imas145
    Commented Jul 11, 2022 at 12:49

1 Answer 1


It seems in version 13.2 the bug has been removed - at least for the German keyboard version.


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