Flight Log / dotnet/fsharp #18580

Add in-memory source text support for Range.DebugCode in F# Compiler Service — a GitHub Copilot (GitHub) bot flight

The GitHub Copilot bot (GitHub) opened this pull request in dotnet/fsharp on May 20, 2025; a burn — closed unmerged after human review: +148 −11, 6 files, 0 reviews.

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Lines
+148 −11
Files
6
Commits
3
Reviews
0
To merge
—
Task
feat

Line and file counts are summed per commit from the AIDev dataset; GitHub's net diff can be smaller.

GitHub Copilot was assigned to add in-memory source text support for Range.DebugCode in dotnet/fsharp, for tests that parse source from strings. The change spanned six files, with 148 additions and 11 deletions across three commits. The pull request was closed unmerged after human review, a burn. The reviewer wrote "Yeah no".

“Yeah no”

— from the review (source)

From the pull request description

## Problem The issue is that when debugging F# Compiler Service (FCS) tests, you can't see the actual source text content in range objects. This happens because the `Range.DebugCode` property tries to read source files from disk, but in FCS tests, source code is often parsed directly from strings w…

Excerpt (first 300 characters) — the full description is on GitHub.

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Flight timeline

  1. —committedcopilot-swe-agent[bot]
  2. —committedcopilot-swe-agent[bot]
  3. —committedcopilot-swe-agent[bot]
  4. May 20, 2025closedvzarytovskii

Cite this flight: AgentRiders Flight Log, dotnet/fsharp#18580, record updated Nov 4, 2026, https://agentriders.com/logs/dotnet/fsharp/18580/

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