Completion on backspace uses the caret position to determine if it should trigger, which involves inspecting the subject buffer. It did not map the text view caret position onto the subject buffer position. This resulted in crashes in projection scenarios when the surface buffer was longer than the subject buffer.

Handle AssemblyResolve events when the requesting assembly is unknown

Fine tune analyzer re-analysis trigger during compilation end action computation.

This gets us to the behavior before AnalyzerManager refactoring where we won't perform force analysis of all documents for compiler diagnostic analyzer end action diagnostics.

@heejaechang this should fix the performance regression.

Remove open deployment dependence on telemetry

Fix for internal TFS bug 1128536

When open-only builds of Roslyn are deployed to the RoslynDev hive,
there is no telemetry service hooked up, so we no longer assume one
exists.

This moves the existing tasks into the source repository for Roslyn, as Roslyn
owns the C# and VB MSBuild tasks.

Remove workaround for DevDiv #1004487.

Fix KeyNotFoundException

Ensure a an operation is a key in the dictionary of operations before
attempting to look it up.

Use TriggerDiagnosticDescriptor in RenameTracking

Fine tune analyzer re-analysis trigger during compilation end action computation. This gets us to the behavior before AnalyzerManager refactoring where we won't perform force analysis of all documents for compiler diagnostic analyzer end action diagnostics.

Fixes #466 "Use a 'TriggerDiagnosticDescriptor' for the rename tracking
diagnostic"

Updates the RenameTrackingDiagnosticAnalyzer to use a
TriggerDiagnosticDescriptor, which prevents the diagnostic title from
appearing in the preview area of the lightbulb. We now pass the
RenameFrom and RenameTo names as part of the Diagnostic's property bag
and construct the localized codefix title based on these in the codefix
itself.

Suppress the struct==null warning except in "strict" mode

Global notification when adding/removing projects

Many of the paths passed to `TryGetAssemblyIdentity` will be for
non-existent files, so bail out early rather than generating a lot of
exceptions.

Fixes #663

Fix calculation for slot containing offset

Suggest adding Microsoft.VisualBasic for ERR_MissingRuntimeHelper

make solution crawler to cancel all running tasks on global operation

Fixes #443.

Remove some dead code

Implemented incremental computation of ChangedText.Lines

This addresses issue #608 from @mkosieradzki.
Note that the Visual Studio IDE scenario will not be impacted by this change because, when hosted in Visual Studio, we use editor TextBuffer snapshots as the backing store and they already do their own line tracking.

Disable the severity menu items when a selected diagnostic is not configurable

previously on global operation, soluton crawler will pause itself but it won't cancel already running tasks.

this change make solution crawler to even cancel running tasks and go to pause mode sooner on global operation.

cancelled tasks will re-enqueued to work queue and will run next time.

VB does not support virtual events.

In the dev12 PDB format, usings and imports were encoded as strings in
PDB files.  The strings were structured, but required a certain amount of
guesswork (for example, you might not know whether you were importing a
type or a namespace until after binding).  In the new PDB format, usings
and imports are represented as structured blobs and tokens are used
wherever possible.

This change introduces two new class hierarchies, ImportRecord and
ExternAliasRecord, that the expression compiler can pass around instead
of raw strings.  Unfortunately, there is still switching logic in two
places - both when these types are instantiated and when they are
consumed.  The instantiation switch is very simple - we just check for
the appropriate version of ISymUnmanagedReaderX.  The consumption logic
is more complex, because the new and old representations differ
substantially.

TODO: Presently, there is very little code for consuming the new PDB
format, since the APIs are not yet available.