Fix Acronym Casing in Generated Parameters #11672

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1. Jorge Rangel (jorgerangel-msft)

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   emitter:client:csharpIssue for the C# client emitter: @typespec/http-client-csharpIssue for the C# client emitter: @typespec/http-client-csharp

   on Aug 14, 2026
2. Jorge Rangel (jorgerangel-msft)

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   Copilot

   and

   Jorge Rangel (jorgerangel-msft)

   on Aug 14, 2026
3. Copilot

   linked a pull request that will close this issueFix IPv4 and IPv6 casing in generated C# parameters #11673on Aug 14, 2026
4. github-actions

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   bugSomething isn't workingSomething isn't working

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5. github-actions commented on Aug 14, 2026

   

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   🎯 Issue Triage

   Parameters named ipv4 and ipv6 are incorrectly generated as iPv4/iPv6 instead of the expected IPv4/IPv6 in the C# client emitter, suggesting ToIdentifierName doesn't handle acronym casing correctly.

   Category: Bug
   Area: emitter:client:csharp

   ⚠️ No reproduction provided. A minimal repro would help diagnose this issue.

   🔍 Analysis

   • The bug is in identifier name generation within the C# client emitter (@typespec/http-client-csharp).
   • ToIdentifierName likely splits on word boundaries but doesn't recognize known acronyms like IPv4/IPv6, causing incorrect PascalCase output (iPv4 instead of IPv4).
   • A fix would require maintaining an acronym/abbreviation list or special-casing known patterns so they are preserved or correctly capitalized.
   • Referenced in azure-sdk-for-net#62072.

   📝 Suggested next steps

   • Identify where ToIdentifierName is defined in the C# emitter codebase.
   • Add/update acronym handling logic to correctly uppercase known acronyms (e.g., IPv4, IPv6, HTTP, URL).
   • Add unit tests covering acronym casing transformations.

   Generated by Agentic Triage
6. Jorge Rangel (jorgerangel-msft)

   assigned

   JoshLove-msft

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   Jorge Rangel (jorgerangel-msft)

   on Aug 14, 2026
7. JoshLove-msft

   closed this as completedin #11673on Aug 14, 2026
8. pull

   added a commit that references this issue on Aug 14, 2026

   Fix IPv4 and IPv6 casing in generated C# parameters (microsoft#11673)

   ...

   This issue will close once commit d459235 is merged into the 'main' branch.

   d459235