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Remove always-on ImplicitYield language feature flag - #20233

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T-Gro:fix/issue-20143
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Remove always-on ImplicitYield language feature flag#20233
T-Gro wants to merge 1 commit into
dotnet:mainfrom
T-Gro:fix/issue-20143

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@T-Gro

@T-Gro T-Gro commented Aug 7, 2026

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Fixes #20143

LanguageFeature.ImplicitYield has been enabled for every accepted --langversion (minimum 8.0) since F# 4.7, so its flag could never be turned off. Removed the dead flag and collapsed the guarded code to its enabled behavior; --disableLanguageFeature:ImplicitYield is no longer a recognized feature name.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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github-actions Bot commented Aug 7, 2026

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⚠️ Release notes required, but author opted out

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cc @dotnet/fsharp-team-msft

@T-Gro T-Gro added the NO_RELEASE_NOTES Label for pull requests which signals, that user opted-out of providing release notes label Aug 7, 2026
@github-actions github-actions Bot added the AI-Tooling-Check-Scanned-Clean Tooling check: diff analyzed, no interesting infrastructure files label Aug 7, 2026
@T-Gro

T-Gro commented Aug 10, 2026

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Closing as a duplicate of #20230 (same change, on a dotnet/fsharp branch). Consolidating on #20230 which has NO_RELEASE_NOTES and auto-merge armed.

@T-Gro T-Gro closed this Aug 10, 2026
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Remove always-on language feature flag: ImplicitYield

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