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Related: Automating Esc [[ Esc formatting?

In previous versions of Mathematica, I could add these lines to my KeyTranslations.tr file, to map Ctrl+[ to [[:

Item[KeyEvent["8", Modifiers -> {Control}],
        FrontEndExecute[{
            FrontEnd`NotebookWrite[FrontEnd`InputNotebook[],
                "\[LeftDoubleBracket]", After]
        }]],
Item[KeyEvent["9", Modifiers -> {Control}],
        FrontEndExecute[{
            FrontEnd`NotebookWrite[FrontEnd`InputNotebook[],
                "\[RightDoubleBracket]", After]
        }]],

(I had to modify @rmrf's original key binding, because there are no [ and ] keys on a German keyboard. They're under the 8 and 9 keys, so I mapped those. I also had to comment out the other occurrence of KeyEvent["9", Modifiers -> {Control}, in the same file.)

In Mathematica 10, this works for Ctrl+8, but not for Ctrl+9, so I'm guessing Ctrl+9 is bound to something else.

Is there a way to find out where Ctrl+9 is mapped (so I can change it there)? It's not listed under tutorial/KeyboardShortcutListing, and I couldn't find it by grep'ing for KeyEvent["9" in the SystemFiles folder

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  • $\begingroup$ This doesn't answer your more general question, but Ctrl+9 inserts an inline cell within a cell of compatible style (e.g., Text). $\endgroup$
    – mfvonh
    Commented Jul 12, 2014 at 12:11
  • $\begingroup$ @mfvonh: I just realized that my question was only half true: I did find another KeyEvent["9", in the same file, mapped to CreateInlineCell. I commented that out already - but it still seems to be active. Sadly, these EventTranslations seem to be completely undocumented. $\endgroup$
    – Niki Estner
    Commented Jul 12, 2014 at 12:18

1 Answer 1

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@mfvonh's comment told me where to look: Apparently, the MenuKey in MenuSetup.tr also binds a key to a command. So Ctrl+9 was bound twice, in KeyTranslations.tr and again in MenuSetup.tr. Once I removed/changed both bindings, I could re-bind Ctrl+9 to ]].

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