`zstring_view`: opt-in `zstring_view_safe` variant, P3655R0-aligned `substr`, `contains()` polyfill#635

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mmthomas:users/mmthomas/zstring-view-cxx20-23-improvements

Commits on May 28, 2026

basic_zstring_view: P3655R0-aligned substr, safer default, contains() polyfill

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Commits on May 29, 2026

basic_zstring_view: gate safer default ctor behind WIL_ZSV_DEFAULT_TO_EMPTY_BUFFER

Monroe Thomas
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basic_zstring_view: reframe class doc-block around the opt-in macro

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Commits on Jun 4, 2026

basic_zstring_view: split safer defaults under a Traits policy

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basic_zstring_view: apply clang-format line-joins flagged by CI

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basic_zstring_view: defeat clang -Wclass-conversion via template-dependent return type

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