[expr.prim.lambda.capture]/12 says
An entity is captured by reference if it is implicitly or explicitly captured but not captured by copy.
However, [expr.prim.lambda.capture]/8 says
An entity is captured if it is captured explicitly or implicitly.
So it's enough to say
An entity is captured by reference if it is implicitly or explicitly captured but not captured by copy.
Similarly [expr.prim.lambda.capture]/17
[Note 10: If a non-reference entity is implicitly or explicitly captured by reference, invoking the function call operator of the corresponding lambda-expression after the lifetime of the entity has ended is likely to result in undefined behavior. — end note]
Or is it intentional to use a verbose tone to remind readers?
[expr.prim.lambda.capture]/12 says
However, [expr.prim.lambda.capture]/8 says
So it's enough to say
Similarly [expr.prim.lambda.capture]/17
Or is it intentional to use a verbose tone to remind readers?