Of course I can simply type the unicode ↪, but is there a operator with no built in meaning that renders like this?

The documentation guide/ArrowsAndArrowLikeForms presumably lists all arrows. If it doesn't exist, can I define Output and typesettings rules for the unicode character?

  • 3
    $\begingroup$ I am not sure I understand your question. This character does not have any built-in meaning and can be used as a symbol with no apparent problems. What exactly are you trying to achieve? $\endgroup$
    – Domen
    Jan 15, 2022 at 23:23

1 Answer 1


You can use an empty TemplateBox to create a new operator. For example:

CurrentValue[EvaluationNotebook[],{InputAutoReplacements,"ha"}] = TemplateBox[
    DisplayFunction -> Function@"↪",
    InterpretationFunction :> Function[Sequence["~", "HookRightArrow", "~"]]

Then, typing x space h a space y produces:

Sequence["~", "HookRightArrow", "~"] y

and when evaluated yields:

HookRightArrow[x, y]

  • $\begingroup$ Very neat. I was familiar with defining InputAutoReplacements, but having it resolve to the symbol is very nice. $\endgroup$
    – Adam
    Jan 16, 2022 at 1:21

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