Confusing error message when run in linux vscode debug environment.

[spearson78]

When running in debug mode in VS Code under Linux the Application.Run() method returns an *os/exec.ExitError . This is very confusing and makes tracking down the root cause difficult.

The issue is caused by the default debug environment in VS Code not launching in a terminal.

The issue can be solved (under linux) by using the following launch.json

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Launch with Terminal",
            "type": "go",
            "request": "launch",
            "mode": "auto",
            "program": "${fileDirname}",
            "console": "integratedTerminal"
        }
    ]
}

Note the integratedTerminal console setting.

The error message can be improved by returning an ErrTermNotFound in the case of an empty $TERM environment variable. Hopefully a better error message will lead users to identify the lack of a terminal as the root cause of the problem.

I have implemented this improvement and will create a pull request for this issue.