Boolean not (!) breaks the elixirAlias syntax match

[jparise]

This text correctly matches the boolean not operator (!) follow by an elixirAlias:

! Enum.empty?(...)

This text (without intermediate whitespace) does not:

!Enum.empty?(...)

I believe this is because ! is included in the iskeyword set, and elixirAlias is defined using \< to match the start of a keyword-aware word.

[jparise]

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