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Offer F# declarations to the Copilot chat "#" mention picker - #20409

Merged

T-Gro merged 36 commits into

dotnet:mainfrom

xperiandri:copilot-mentions

Oct 19, 2026

Merged

Offer F# declarations to the Copilot chat "#" mention picker#20409
T-Gro merged 36 commits into
dotnet:mainfrom
xperiandri:copilot-mentions

Commits on Oct 10, 2026
- Offer F# declarations to the Copilot chat "#" mention picker
  
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  f26bfcc
- Parallelize Copilot symbol lookup and cut allocations on the hot cache path
  
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- Link the Copilot mention picker release note to its PR
  
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- Harden Copilot provider registration and widen one-line snippets
  
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- Match declaration names over spans instead of building them
  
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- Slice source text instead of copying it line by line for outlining
  
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- Track comment lines by number instead of storing their text
  
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- Take the main thread before registering the Copilot context provider
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- Trace Copilot context-provider registration through the output pane
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- Answer the Copilot mention picker from what is already parsed
  
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- Answer the mention picker with the open files first
  
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- Answer the picker before it knows what is being mentioned
  
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- Rank and label F# declarations in the picker the way Copilot does C#
  
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- Take the copied outlining work back out of this pull request
  
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- Keep double backticks in a mention's fully qualified name
  
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- Throttle through FSharp.Core's Task.parallelDoLimit
  
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- Format the Copilot context provider
  
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- Pipe items into Seq.map instead of applying it prefix-style
  
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- Walk the solution once for both the picker and a picked mention
  
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- Collect subscriptions into an array, not a list
  
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  9cf9140
- Take Copilot picker focus from Copilot's own document-context service
  
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  1706ff3
- Navigate to the overload a Copilot mention was picked for, not the first found
  
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  0ca29cb
- Preallocate the open-documents bucket in tiers by its known upper bound
  
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- Compare spans through ordinal helpers instead of spelling StringComparison out
  
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  8260917
- Take the span ordinal helpers from illib instead of copying them
  
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- Resolve only the open documents up front, walk the rest on demand
  
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  9a0644c
- Revert "Take the span ordinal helpers from illib instead of copying them"
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- Look a declaration up in the tests without FSharp.Editor's inline helper
  
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- Revert "Compare spans through ordinal helpers instead of spelling StringComparison out"
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- Answer from the cache only for the text it parsed; visit each unopened file once
  
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- Look a declaration up by the lines of its header, not by scanning every scope
  
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- Answer for a picked mention from the file it was picked in
  
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  146ff1e
Commits on Oct 11, 2026
- Remove the duplicated release note
  
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  cec333a
Commits on Oct 18, 2026
- Keep the project of a picked declaration with its file and line
  
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  c788c26
- Cut the Copilot provider's diff to what the feature needs
  
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  5f32e90
- Share the Copilot provider tests' setup
  
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  b4e1af7

Commits

Commits on Oct 10, 2026

Commits on Oct 11, 2026

Commits on Oct 18, 2026