* Add VisitValSig to SyntaxVisitorBase.

* Improving AddOpen code fix provider

* fantomas

---------
Co-authored-by: NTomas Grosup <tomasgrosup@microsoft.com>

* First draft of "Changing the AST" documentation

* mention updating bsl files

* modify according to reviews

* Diagnostics logger: remove exception rethrow during recovery

* Parser: recover on unfinished record patterns

Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

* Reword policheck issue

Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

* Deduplicate and sort error codes

* Update test

* 3570 -> 3573

* 1503 -> 1003

* 3570 -> 3573

* 3217 -> 999

* Update output.1000.stderr.bsl

* Update output.200.stderr.bsl

* Update output.47.stderr.bsl

* Update output.multiemit.stderr.bsl

* Update output.off.stderr.bsl

* Update output.quiet.stderr.bsl

* Update output.stderr.bsl

* Update output.stderr.bsl

* Update output.off.stderr.bsl

* Update output.multiemit.stderr.bsl

* Update output.47.stderr.bsl

* Update output.200.stderr.bsl

* Update output.1000.stderr.bsl

* Update FSComp.txt

* Update FSComp.txt

* Update pdb04.fs

* Update output.quiet.stderr.bsl

* Add a error code sorting check

* Fix wording

* Update the script

* Fix FSharp.Core reference in FSharp.Compiler.UnitTests

* Update tests/FSharp.Compiler.UnitTests/FSharp.Compiler.UnitTests.fsproj
Co-authored-by: NTomas Grosup <tomasgrosup@microsoft.com>

---------
Co-authored-by: NTomas Grosup <tomasgrosup@microsoft.com>

* Process longId when for SynTypeDefnKind.Augmentation.

Remove adding to progject, since it's handled by the project automation

* add ranges for lparen, /, rparen to SynRationalConst.Rational

* extend SynRationalConst with a new case "Paren" to capture SynRationalConsts wrapped in parens

* use rhs2 to help recovery

A semicolon was missing

Co-authored-by: Ndotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com>

* Optimize trackErrors usage

* Inline

* Fix

Microsoft.SourceBuild.Intermediate.source-build-reference-packages
 From Version 8.0.0-alpha.1.23421.1 -> To Version 8.0.0-alpha.1.23424.1

Merge release/dev17.7 to main

* Initial recovery for function types in union case field.

* Add production for named unionCaseField with invalid type.

* Consider entire function type invalid.

* Add unit test for exception case.

* Update xlf files

* Update component test

* Update error message

* Better error reporting for duplicated field on record expressions

* WIP

* Update error message

* Update tests

* In copy-and-update we need to reverse the list to get the correct order of fields.

* make it work with copy update syntax and more tests

* Renaming for clarity

* Optimize pattern compilation