[range.range] Redundant paragraph about expression variations LWG3915

[JohelEGP]

Expression variations kick in for "an expression that is non-modifying for some constant lvalue operand", but std::ranges::range's is an non-constant lvalue, so p2 is redundant.

[JohelEGP]

I suppose that the change that clarified the template parameters' cv-qualification for purposes of equality-preservation and requiring additional variations happened concurrently with the change of std::ranges::range's operand from a forwarding reference to a non-constant lvalue reference.

[jensmaurer]

@jwakely , do you feel we can editorially remove p2, or should this get LWG review?

[JohelEGP]

Requested for an issue to be opened.

[Dani-Hub]

@JohelEGP A new library has been created, see LWG 3915.

[JohelEGP]

Status: WP