It is not possible to see any error output from crashed debug adapter extension

[omusil24]

• VSCode Version: Code 1.18.1 (929bacb, 2017-11-16T18:34:22.110Z)
• OS Version: Linux x64 4.10.0-42-generic
• Extensions:

Extension	Author (truncated)	Version
swagger-viewer	Arj	1.5.0
Bookmarks	ale	0.18.0
cpptools	ms-	0.14.4
swaggitor	qns	0.1.1
qore-vscode	qor	0.2.6
cmake	twx	0.0.17

(2 theme extensions excluded)

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I am developing a debug adapter extension but even through extensive logging, it's sometimes hard to find problems when the debug adapter crashes because VS Code just shows an error message Debug adapter process has terminated unexpectedly. There's no output in any of the terminals and debug consoles. It would be very useful if VS Code showed the exit code and stderr output which was produced by the debug adapter.

Steps to Reproduce:

1. Create a debug adapter extension.
2. Start debugging it.
3. Try to debug some file using it.
4. Make the debug adapter crash.

Reproduces without extensions: Yes

[omusil24]

Just found out that in the [Extension Development Host] window, in the Extensions tab of the Output terminal, there's stderr output. I guess this makes this issue solved.

But nonetheless, if VS Code opened this terminal tab in case of extension crash automatically, it would be useful. Or if it somehow made it more visible that there's a tab of the terminal with new unread output.

[isidorn]

Dup of #41190