<=> operator not getting formatted correctly

[kathykwon]

Describe the bug
The <=> operator is not getting formatted correctly.

To Reproduce

select * from foo join bar on foo.baz <=> bar.baz

Expected behavior

select * from foo join bar on foo.baz <=> bar.baz

Actual behavior

select * from foo join bar on foo.baz <= > bar.baz

Additional context
Running v0.18.0 on a pre-commit hook.

  - repo: https://github.com/tconbeer/sqlfmt
    rev: v0.18.0
    hooks:
      - id: sqlfmt
        language_version: python
        additional_dependencies: [".[jinjafmt]"]

[tconbeer]

This should be an easy fix. What is this operator? I don't think it's Postgres-compatible?

[kathykwon]

This should be an easy fix. What is this operator? I don't think it's Postgres-compatible?

null safe equal
not sure about postgres compatibility

[tconbeer]

Huh. Thanks!