Hristo Hristov 804b46bb45
[libc++][string] P3044R2: sub-string_view from string (#147095)
Implements [P3044R2](https://wg21.link/P3044R2)

Note: `substr.pass.cpp` is refactored to accommodate the test of
`basic_string_view`'s `subview` which is an alias of `substr` without
changing the test cases.

Closes #148140

# References

- https://github.com/cplusplus/draft/pull/7975
- https://wg21.link/string.substr
- https://wg21.link/string.view.ops

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Co-authored-by: Hristo Hristov <zingam@outlook.com>
Co-authored-by: Nikolas Klauser <nikolasklauser@berlin.de>
2025-09-25 03:08:15 +03:00
..