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How can I automatically replace [[ and ]] with the [LeftDoubleBracket] and [RightDoubleBracket] operators?


Automating Esc [[ Esc formatting?On an existing notebook, how to transform all “double brackets” into “DoubleBracket”Convenient string manipulationHow to define a vector with automatically added symbolic elements with subscriptsHow to convert an image to a compressed string representation equivalent to one copied to clipboard by `CopyToClipboard[image]`?Incorporating Built-In Function Options/Parameters into ShorthandDifferentiating a Dot ProductPostfix Double Slash Notation with Multiple ParametersHow to construct custom operators with precedence?Can symbols like + or * be used to denote the Plus and Times functions?How to efficiently input matrices in Mathematica (compared to what MATLAB offers)Define a new Front End Syntax for Function Argument Checking & Debugging













4












$begingroup$


When you type ->, it is automatically turned into the [Rule] character. Can we configure our frontends to do the same for the [[ and ]] characters, which could be turned into [LeftDoubleBracket] and [RightDoubleBracket]?



You can easily do this manually by typing <esc>[[<esc>, but I would like to do this automatically.



This question was originally asked by me in the chat and has answers there; this question is so that those answers can be added and kept for the community.










share|improve this question











$endgroup$







  • 2




    $begingroup$
    Do you really want that when writing func[func2[arg]]? I changed KeyEventTranslations.tr to have <kbd>Alt gr</kbd>+<kbd>i</kbd>/<kbd>o</kbd>.
    $endgroup$
    – Coolwater
    9 hours ago











  • $begingroup$
    Yes, this is part of the problem. Ideally it would only happen after you have typed the matching [[, but more than likely it needs to be done at shift-enter at the earliest. For [[ the problem is simpler because there is no time when you would type [[ except for as part of a Part expression.
    $endgroup$
    – Carl Lange
    9 hours ago











  • $begingroup$
    closely related: 98175
    $endgroup$
    – Kuba
    7 hours ago










  • $begingroup$
    @Kuba That's so closely related I suppose you could make an argument for this being a duplicate, what do you think?
    $endgroup$
    – Carl Lange
    7 hours ago






  • 1




    $begingroup$
    Related using KeyEventTranslations 5221
    $endgroup$
    – Rohit Namjoshi
    6 hours ago















4












$begingroup$


When you type ->, it is automatically turned into the [Rule] character. Can we configure our frontends to do the same for the [[ and ]] characters, which could be turned into [LeftDoubleBracket] and [RightDoubleBracket]?



You can easily do this manually by typing <esc>[[<esc>, but I would like to do this automatically.



This question was originally asked by me in the chat and has answers there; this question is so that those answers can be added and kept for the community.










share|improve this question











$endgroup$







  • 2




    $begingroup$
    Do you really want that when writing func[func2[arg]]? I changed KeyEventTranslations.tr to have <kbd>Alt gr</kbd>+<kbd>i</kbd>/<kbd>o</kbd>.
    $endgroup$
    – Coolwater
    9 hours ago











  • $begingroup$
    Yes, this is part of the problem. Ideally it would only happen after you have typed the matching [[, but more than likely it needs to be done at shift-enter at the earliest. For [[ the problem is simpler because there is no time when you would type [[ except for as part of a Part expression.
    $endgroup$
    – Carl Lange
    9 hours ago











  • $begingroup$
    closely related: 98175
    $endgroup$
    – Kuba
    7 hours ago










  • $begingroup$
    @Kuba That's so closely related I suppose you could make an argument for this being a duplicate, what do you think?
    $endgroup$
    – Carl Lange
    7 hours ago






  • 1




    $begingroup$
    Related using KeyEventTranslations 5221
    $endgroup$
    – Rohit Namjoshi
    6 hours ago













4












4








4





$begingroup$


When you type ->, it is automatically turned into the [Rule] character. Can we configure our frontends to do the same for the [[ and ]] characters, which could be turned into [LeftDoubleBracket] and [RightDoubleBracket]?



You can easily do this manually by typing <esc>[[<esc>, but I would like to do this automatically.



This question was originally asked by me in the chat and has answers there; this question is so that those answers can be added and kept for the community.










share|improve this question











$endgroup$




When you type ->, it is automatically turned into the [Rule] character. Can we configure our frontends to do the same for the [[ and ]] characters, which could be turned into [LeftDoubleBracket] and [RightDoubleBracket]?



You can easily do this manually by typing <esc>[[<esc>, but I would like to do this automatically.



This question was originally asked by me in the chat and has answers there; this question is so that those answers can be added and kept for the community.







syntax custom-notation






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 9 hours ago







Carl Lange

















asked 9 hours ago









Carl LangeCarl Lange

5,17211141




5,17211141







  • 2




    $begingroup$
    Do you really want that when writing func[func2[arg]]? I changed KeyEventTranslations.tr to have <kbd>Alt gr</kbd>+<kbd>i</kbd>/<kbd>o</kbd>.
    $endgroup$
    – Coolwater
    9 hours ago











  • $begingroup$
    Yes, this is part of the problem. Ideally it would only happen after you have typed the matching [[, but more than likely it needs to be done at shift-enter at the earliest. For [[ the problem is simpler because there is no time when you would type [[ except for as part of a Part expression.
    $endgroup$
    – Carl Lange
    9 hours ago











  • $begingroup$
    closely related: 98175
    $endgroup$
    – Kuba
    7 hours ago










  • $begingroup$
    @Kuba That's so closely related I suppose you could make an argument for this being a duplicate, what do you think?
    $endgroup$
    – Carl Lange
    7 hours ago






  • 1




    $begingroup$
    Related using KeyEventTranslations 5221
    $endgroup$
    – Rohit Namjoshi
    6 hours ago












  • 2




    $begingroup$
    Do you really want that when writing func[func2[arg]]? I changed KeyEventTranslations.tr to have <kbd>Alt gr</kbd>+<kbd>i</kbd>/<kbd>o</kbd>.
    $endgroup$
    – Coolwater
    9 hours ago











  • $begingroup$
    Yes, this is part of the problem. Ideally it would only happen after you have typed the matching [[, but more than likely it needs to be done at shift-enter at the earliest. For [[ the problem is simpler because there is no time when you would type [[ except for as part of a Part expression.
    $endgroup$
    – Carl Lange
    9 hours ago











  • $begingroup$
    closely related: 98175
    $endgroup$
    – Kuba
    7 hours ago










  • $begingroup$
    @Kuba That's so closely related I suppose you could make an argument for this being a duplicate, what do you think?
    $endgroup$
    – Carl Lange
    7 hours ago






  • 1




    $begingroup$
    Related using KeyEventTranslations 5221
    $endgroup$
    – Rohit Namjoshi
    6 hours ago







2




2




$begingroup$
Do you really want that when writing func[func2[arg]]? I changed KeyEventTranslations.tr to have <kbd>Alt gr</kbd>+<kbd>i</kbd>/<kbd>o</kbd>.
$endgroup$
– Coolwater
9 hours ago





$begingroup$
Do you really want that when writing func[func2[arg]]? I changed KeyEventTranslations.tr to have <kbd>Alt gr</kbd>+<kbd>i</kbd>/<kbd>o</kbd>.
$endgroup$
– Coolwater
9 hours ago













$begingroup$
Yes, this is part of the problem. Ideally it would only happen after you have typed the matching [[, but more than likely it needs to be done at shift-enter at the earliest. For [[ the problem is simpler because there is no time when you would type [[ except for as part of a Part expression.
$endgroup$
– Carl Lange
9 hours ago





$begingroup$
Yes, this is part of the problem. Ideally it would only happen after you have typed the matching [[, but more than likely it needs to be done at shift-enter at the earliest. For [[ the problem is simpler because there is no time when you would type [[ except for as part of a Part expression.
$endgroup$
– Carl Lange
9 hours ago













$begingroup$
closely related: 98175
$endgroup$
– Kuba
7 hours ago




$begingroup$
closely related: 98175
$endgroup$
– Kuba
7 hours ago












$begingroup$
@Kuba That's so closely related I suppose you could make an argument for this being a duplicate, what do you think?
$endgroup$
– Carl Lange
7 hours ago




$begingroup$
@Kuba That's so closely related I suppose you could make an argument for this being a duplicate, what do you think?
$endgroup$
– Carl Lange
7 hours ago




1




1




$begingroup$
Related using KeyEventTranslations 5221
$endgroup$
– Rohit Namjoshi
6 hours ago




$begingroup$
Related using KeyEventTranslations 5221
$endgroup$
– Rohit Namjoshi
6 hours ago










1 Answer
1






active

oldest

votes


















1












$begingroup$

You can use CellEpilog to modify the contents of the cell upon evaluation:



SetOptions[EvaluationNotebook[],
CellEpilog :> If[
! TrueQ[
Max@CurrentValue[CellChangeTimes] <=
CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"]
],
CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"] =
Max@CurrentValue[CellChangeTimes];
NotebookWrite[
EvaluationCell[],
Replace[NotebookRead[EvaluationCell[]],
RowBox@head_, "[", RowBox@"[", part_, "]", "]" :>
RowBox@head, "[LeftDoubleBracket]", part, "[RightDoubleBracket]", All]
]
]
]


Demonstration:
https://i.stack.imgur.com/4V5WJ.gif



This could of course be extended to do similar replacements for <|…|> etc. To minimize the performance hit, we keep track of the last CellChangeTimes value and only rerun the replacement code when it changed.



The nice thing about an approach like this (i.e. manipulation of the cell's box structure) is that it's rather straightforward to identify the bracket pairs to replace, since the front-end does all the necessary parsing for us.



An alternative to putting the code into CellEpilog might be to create a menu item for it, one could also modify the "Evaluate cells" menu item to run this code on all selected cells first.






share|improve this answer











$endgroup$













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    1 Answer
    1






    active

    oldest

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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    1












    $begingroup$

    You can use CellEpilog to modify the contents of the cell upon evaluation:



    SetOptions[EvaluationNotebook[],
    CellEpilog :> If[
    ! TrueQ[
    Max@CurrentValue[CellChangeTimes] <=
    CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"]
    ],
    CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"] =
    Max@CurrentValue[CellChangeTimes];
    NotebookWrite[
    EvaluationCell[],
    Replace[NotebookRead[EvaluationCell[]],
    RowBox@head_, "[", RowBox@"[", part_, "]", "]" :>
    RowBox@head, "[LeftDoubleBracket]", part, "[RightDoubleBracket]", All]
    ]
    ]
    ]


    Demonstration:
    https://i.stack.imgur.com/4V5WJ.gif



    This could of course be extended to do similar replacements for <|…|> etc. To minimize the performance hit, we keep track of the last CellChangeTimes value and only rerun the replacement code when it changed.



    The nice thing about an approach like this (i.e. manipulation of the cell's box structure) is that it's rather straightforward to identify the bracket pairs to replace, since the front-end does all the necessary parsing for us.



    An alternative to putting the code into CellEpilog might be to create a menu item for it, one could also modify the "Evaluate cells" menu item to run this code on all selected cells first.






    share|improve this answer











    $endgroup$

















      1












      $begingroup$

      You can use CellEpilog to modify the contents of the cell upon evaluation:



      SetOptions[EvaluationNotebook[],
      CellEpilog :> If[
      ! TrueQ[
      Max@CurrentValue[CellChangeTimes] <=
      CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"]
      ],
      CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"] =
      Max@CurrentValue[CellChangeTimes];
      NotebookWrite[
      EvaluationCell[],
      Replace[NotebookRead[EvaluationCell[]],
      RowBox@head_, "[", RowBox@"[", part_, "]", "]" :>
      RowBox@head, "[LeftDoubleBracket]", part, "[RightDoubleBracket]", All]
      ]
      ]
      ]


      Demonstration:
      https://i.stack.imgur.com/4V5WJ.gif



      This could of course be extended to do similar replacements for <|…|> etc. To minimize the performance hit, we keep track of the last CellChangeTimes value and only rerun the replacement code when it changed.



      The nice thing about an approach like this (i.e. manipulation of the cell's box structure) is that it's rather straightforward to identify the bracket pairs to replace, since the front-end does all the necessary parsing for us.



      An alternative to putting the code into CellEpilog might be to create a menu item for it, one could also modify the "Evaluate cells" menu item to run this code on all selected cells first.






      share|improve this answer











      $endgroup$















        1












        1








        1





        $begingroup$

        You can use CellEpilog to modify the contents of the cell upon evaluation:



        SetOptions[EvaluationNotebook[],
        CellEpilog :> If[
        ! TrueQ[
        Max@CurrentValue[CellChangeTimes] <=
        CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"]
        ],
        CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"] =
        Max@CurrentValue[CellChangeTimes];
        NotebookWrite[
        EvaluationCell[],
        Replace[NotebookRead[EvaluationCell[]],
        RowBox@head_, "[", RowBox@"[", part_, "]", "]" :>
        RowBox@head, "[LeftDoubleBracket]", part, "[RightDoubleBracket]", All]
        ]
        ]
        ]


        Demonstration:
        https://i.stack.imgur.com/4V5WJ.gif



        This could of course be extended to do similar replacements for <|…|> etc. To minimize the performance hit, we keep track of the last CellChangeTimes value and only rerun the replacement code when it changed.



        The nice thing about an approach like this (i.e. manipulation of the cell's box structure) is that it's rather straightforward to identify the bracket pairs to replace, since the front-end does all the necessary parsing for us.



        An alternative to putting the code into CellEpilog might be to create a menu item for it, one could also modify the "Evaluate cells" menu item to run this code on all selected cells first.






        share|improve this answer











        $endgroup$



        You can use CellEpilog to modify the contents of the cell upon evaluation:



        SetOptions[EvaluationNotebook[],
        CellEpilog :> If[
        ! TrueQ[
        Max@CurrentValue[CellChangeTimes] <=
        CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"]
        ],
        CurrentValue[EvaluationCell[], TaggingRules, "autoreplaceTime"] =
        Max@CurrentValue[CellChangeTimes];
        NotebookWrite[
        EvaluationCell[],
        Replace[NotebookRead[EvaluationCell[]],
        RowBox@head_, "[", RowBox@"[", part_, "]", "]" :>
        RowBox@head, "[LeftDoubleBracket]", part, "[RightDoubleBracket]", All]
        ]
        ]
        ]


        Demonstration:
        https://i.stack.imgur.com/4V5WJ.gif



        This could of course be extended to do similar replacements for <|…|> etc. To minimize the performance hit, we keep track of the last CellChangeTimes value and only rerun the replacement code when it changed.



        The nice thing about an approach like this (i.e. manipulation of the cell's box structure) is that it's rather straightforward to identify the bracket pairs to replace, since the front-end does all the necessary parsing for us.



        An alternative to putting the code into CellEpilog might be to create a menu item for it, one could also modify the "Evaluate cells" menu item to run this code on all selected cells first.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited 6 hours ago

























        answered 7 hours ago









        Lukas LangLukas Lang

        6,9451931




        6,9451931



























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