- Partially implements P2770R0 (http://wg21.link/p2770) - Fixes https://wg21.link/LWG3698, https://wg21.link/LWG3700, and https://wg21.link/LWG3791 - join_with_view hasn't been done yet since this type isn't implemented yet - Rename tuple test directory to match the standard (which changed in P2770R0) - Rename join_view test directory to match the standard
Resolves Issue #69083 The `_CopySegment` helper for `ranges::copy(join_view, out)` is not `constexpr` causing rejection in `libc++` in a static assertion context as in the issue snippet.