[Repo Assist] Monthly Activity 2026-04

[github-actions]

🤖 Repo Assist here — I'm an automated AI assistant for this repository.

Activity for April 2026

Suggested Actions for Maintainer

Comprehensive list of all pending actions requiring maintainer attention:

• Review/Merge PR Fix FS0452 for empty string pattern matching in quotations #19532: Fix FS0452 for empty string pattern matching in quotations — fixes Quotation string matching fails? #19527 (high-impact: reporter says team cannot upgrade to VS2026) — Review
• Review/Merge PR Fix #12386, SRTP trait call correct overload resolution in multi-submit FSI scenario #19471: Fix Null value returned from trait call #12386 — SRTP trait call correct overload resolution in multi-submit FSI — Review
• Review/Merge PRs (regression tests, ready to merge): Add regression test: #9878, SRTP with phantom type parameter #19467, Add regression test: #13114, SynPat.Record and QuoteExpr traversal #19468, Add regression test: #10043, backtick should not report unexpected keyword #19476, Add regression test: #7177, never-matched warning FS0026 with active patterns #19528, Add regression test: #16007, SRTP ctor constraint no longer causes value restriction #19529, Add regression test: #16154, task CE with IQueryable filters no longer throws VerificationException #19530, Add regression test: #19456, nested let bang in plain let inside task CE raises FS0750 #19531, Add regression test: #16056, auto property DeclarationLocation returns correct range #19533, Add regression test: #15070, hash-load with dot-slash prefix no longer causes FS1141 #19534, Add regression test: #15987, SRTP overload resolution returns correct typed value #19535 — #19467 #19468 #19476 #19528 #19529 #19530 #19531 #19533 #19534 #19535
• Hold PR Add regression test: #12796, DefaultValue null on array type record field #19472: regression test for internal error : encodeCustomAttrElemType: unrecognized custom element type #12796 — bug still present; PR is a future test once the bug is fixed — Review
• Check comment on SNAFU with indexed properties & type extensions: internal error & inconsistency over shadowing #16034: confirmed still present — indexed property setter with named arg gives FS0193 — View
• Check comment on Signature mismatch with no comparable struct #15339: confirmed still present — GenerateSignature() drops [<Obsolete>] and [<Experimental>] attributes — View
• Check comment on Can't use addition (substruction) multiple times in member for constrained to INumber<> generic  #16464: confirmed still present — FS0670 when chaining multiple + on INumber<> — View
• Check comment on Internal error when using custom attribute and omitting optional argument #8353: root cause identified — optional bool attribute arg without DefaultParameterValue causes internal error — implement fix in IlxGen.fs — View
• Check comment on Completion is available for some obsolete members only #13512: events/fields ignore allowObsolete in ResolveCompletionsInType — View
• Issue NOT fixed Can't take address of a struct value and set it to a discard pattern #18841: let _ = &s still raises FS0421 on current main — View
• Verify and close (labelled AI-thinks-issue-fixed): "This rule is never matched" warning is not shown if an active pattern is used in match expression #7177, Null value returned from trait call #12386, #load in fsx script can fail without a proper error message #15070, SRTP Regression in .net SDK release 7.0.400 #15987, Lang version 6.0 -> 7.0 value restriction regression. #16007, FSharpMemberOrFunctionOrValue.DeclarationLocation returns wrong location for auto property #16056, VerificationException on runtime, due to upcast to obj inside the task state machine #16154, Missing FS0750 in nested let bang (got lost between 9.0 and 10.0) #19456 — Search

Additional observations for maintainer's attention

• Issue Quotation string matching fails? #19527 (March 31): <@@ match x with "" -> ... @@> fails with FS0452. PR Fix FS0452 for empty string pattern matching in quotations #19532 by T-Gro fixes this. Multiple reporters confirm the issue blocks upgrading to VS2026.
• Issue internal error : encodeCustomAttrElemType: unrecognized custom element type #12796 (DefaultValue null array field): Bot wrongly diagnosed as fixed in an earlier run — apologies. Bug confirmed still present. PR Add regression test: #12796, DefaultValue null on array type record field #19472 adds a regression test for when the fix is eventually implemented.
• Issue duplicate entry '.cctor' in method table #19445 (duplicate .cctor in method table for generic DU with static member val) — confirmed still present in F# 11.0 dev.
• Issue Nested let! should compile #19457 ("Nested let! should compile") is a related feature request to Missing FS0750 in nested let bang (got lost between 9.0 and 10.0) #19456. Both opened by same reporter in March 2026.

Future Work for Repo Assist

• Task 1: Continue scanning pre-2024 bugs with new activity (c=0, uses lr filter)
• Task 3: woc=16886 — confirmed Telemetry exception in VS #16083, VS Coloring sometimes resets #16130, Exception in VS in itemKeyStore  #16275, Make sure color themes handling in VS is up to date #16300, Comments get decolorized in some newly created projects #16886 are correctly labeled windows-only; monitoring for new ones above Comments get decolorized in some newly created projects #16886
• Task 2: rtc=19456 — all current AI-thinks-issue-fixed issues have regression test PRs; monitoring for newly labeled issues

Run History

2026-04-01 07:02 UTC — Run

• 📋 Task 1: No pre-2024 bugs with new activity since last run; FS3356 Extension members #19539 (FS3356 extension members) created today — post-2024 cutoff, skipped
• 📋 Task 3: Confirmed Telemetry exception in VS #16083, VS Coloring sometimes resets #16130, Exception in VS in itemKeyStore  #16275, Make sure color themes handling in VS is up to date #16300, Comments get decolorized in some newly created projects #16886 correctly labeled AI-thinks-windows-only (telemetry/VS-chrome issues); woc updated to 16886
• 📋 Task 2: No new AI-thinks-issue-fixed issues above rtc=19456; no action
• 📝 Noted Fix FS0452 for empty string pattern matching in quotations #19532 (T-Gro fix for FS0452 quotation issue Quotation string matching fails? #19527) added to Suggested Actions

2026-04-01 01:07 UTC — Run

• 📋 No pre-2024 bugs with new activity since 2026-03-31 (lr filter, all candidates already processed)
• 📋 No new AI-thinks-windows-only issues above woc=15350 — Task 3 idle
• 📋 No new AI-thinks-issue-fixed issues above rtc=19456 — Task 2 idle
• 📝 Created April 2026 monthly activity summary (this issue)

Generated by Repo Assist · ◷

To install this agentic workflow, run

gh aw add githubnext/agentics/workflows/repo-assist.md@9135cdfde26838a01779aa966628308404ec1f02