* Cascadia/TerminalConnection: Close the output thread on exit.
It seems that TerminateThread() is available in the code...
* VtPipeTerm: Don't crash when closing the app.
- Gracefully handle ReadFile returning false (usually because of ERROR_BROKEN_PIPE on exit).
- Minor whitespace formatting.
* Cascadia/TerminalConnection: Finish to implement the ConhostConnection::Close() 'TODO' block.
* set identifying environment variable for new connections
Set a new 'WT_SESSION' environment variable when creating new terminal
connections to allow shells to detect a unique Windows Terminal session.
The value of the variable is a stringified GUID as returned by
CoCreateGuid.
How verified:
- "razzle" & vs debug build
- runut
- manual inspection
* * use winrt::guid type for connection guid
* use Utils::GuidToString for guid stringification
* expose guid parameter in ITerminalConnection idl
* - poke guid through ITerminalConnection
- misc. review fixes
- throw if CreateConPty fails in ConhostConnection::Start
- apply [[nodiscard]] and noexcept in various places
* - simplify environment variable extraction in UpdateEnvironmentMapW
* - use Utils::CreateGuid instead of CoCreateGuid in ConHostConnection()
