No Single-Match Maybe Blocks

Single-match maybe blocks should be avoided.

Avoid

maybe
    {ok, A} ?= do:something()
end

Prefer

{ok, A} = do:something()

Note that maybe blocks with an else are perfectly acceptable, too:

maybe
    {ok, A} ?= do:something()
else
    OtherThing -> handle:this(OtherThing)
end

Rationale

Using a maybe block with only one match is unnecessary and reduces code clarity. It adds syntactic overhead without providing meaningful branching logic. In such cases, a let-style assignment or direct pattern matching is typically more appropriate and idiomatic. Removing single-match maybe block also improves readability and simplifies the control flow.

Options

• None.

Example configuration

{elvis_style, no_single_match_maybe, #{}}