Adds support for event add-handler accessors.

Right click "Suppress" should be enabled even when the error list selection has some suppressed issues

always use the 'en-US' culture for `.ToUpper()` when creating the new property name

Add regression tests for #4264.

Fix unit test that was mistakenly changed in PR 6434

Add /debug:portable and /deterministic to csc/help and vbc/help

Adding support for InforBar Telemetry

[AskMode] Add help for script directives in REPL

[AskMode] Avoid DataTip crash in .cshtml...

Account for stable and next version of MS.CA.Analyzers in the MS.CA.Common nuget package

Preselect "True" and "False" keywords in VB

Run xunit with -verbose and save xunit process output to a file on error

Fix for issue 6425: Right click "Suppress" should be enabled even when the error list selection has some suppressed issues

Scenario: User bulk selects diagnostics in the error list for suppression/baselining, which includes at least one suppressable diagnostic, but still doesn't see any context menu item for suppressing the diagnostics.

Cause: Our current logic to show the Suppress/Remove suppresion commands require that all the selected diagnostics are active/suppressed respectively. The design team has decided that we should loosen this check to "require that at least one of the selected diagnostics is active/suppressed respectively - this decision was based on the feedback from few people dogfooding this feature.

Fix: Trivial fix to not account for the irrelevant diagnostics when deciding whether or not to show the command. The implementation of the command already drops all the irrelevant diagnostics.

Testing: Verified that we get the desired context menu visiblity for mixed error list selection and invoking the commands also work as expected.

Fixes #6425

There are cases were a DataBuffer span may map to two zero-length spans in the _subjectBuffer.  In these cases, rather than throwing an Exception, we can simply try returning a DataTip from each one.

Fixes /pathmap for the unix root ("/") directory.  Adds diagnostics for pathmap failed parsing.

includes tests with turkish, arabic, spanish, and greek identifiers

When filtering completion in the Turkish locale, attempt matches in the current culture as well as the invariant culture

Report ERR_NoConversionForNubDefaultParam even if default parameter value is not default(T).

Visual Basic: Bring back navigation to the Object Browser over Metadata-as-Source

When filtering completion in locales other than en-US, first attempt matching in the current culture, and fall back to en-US if there is no match.

This workaround should help with matching against Turkish "I".

[AskMode] Fix crash in DirectiveTriviaSyntax.DirectiveNameToken...

Convert IReadonlyCollection argument to ImmutableDictionary