Everyone,

Recently I came up with the idea of turning variables like "allfoo"
into "∀foo" (I find the latter token significantly easier to parse
visually) by using the lovely Unicode completion and by slightly
abusing mathematical notation.  However, this is not possible and I am
not sure why.

    julia> ∀foo = [17, 4711]
    ERROR: syntax: invalid character "∀"

The only issues that I am aware of are #5712 [1] and #7582 [2], but
both appear to be unrelated.  I also did a quick search through the
code base to see if the character is explicitly claimed, but `grep ∀`
terminated empty-handed, apart from the `\forall` completion, some
test strings and documentation.

Surely I am missing something, but what?

    Pontus

[1]: https://github.com/JuliaLang/julia/issues/5712
[2]: https://github.com/JuliaLang/julia/issues/7582

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