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Use safe code for UTF-8 StartsWith(OrdinalIgnoreCase) - #134857

Merged

EgorBo merged 8 commits into

dotnet:mainfrom

EgorBo:utf8-startswith-safe

Sep 30, 2026

Commits on Sep 29, 2026
- Use safe code for UTF-8 StartsWith(OrdinalIgnoreCase)
  
  EgorBo
  and
  Copilot
  committed
  2d4c155
- Simplify to a scalar loop and use Rune.ToUpperOrdinal
  
  EgorBo
  and
  Copilot
  committed
  e245935
- Merge the ASCII and non-ASCII paths into a single loop
  
  EgorBo
  and
  Copilot
  committed
  4303ff5
- Add an inlined fast path for a single ASCII byte prefix
  
  EgorBo
  and
  Copilot
  committed
  767080d
- Update comments
  
  EgorBo
  and
  Copilot
  committed
  b445c42
- Fix formatting
  
  EgorBo
  and
  Copilot
  committed
  10695d1
- Update MemoryExtensions.Globalization.Utf8.cs
  EgorBo
  authored
  5a0eab1
- Add UTF-8 parsing tests for non-ASCII and long signs
  
  EgorBo
  and
  Copilot
  committed
  ea063e7