Debugger: Error processing lanuch options at filed: processId

[qian6]

Environment data

dotnet --info output:
VS Code version: 1.10.1
C# Extension version: \scratch2\scratch\janraj\vsdbg3\csharp-1.8.0-beta1.vsix
.NET Core SDK: 1.0.0-preview2-1-003177
OS: Windows 10

Steps to reproduce

1. Open attached folder.
   hwapp.zip
2. Select '.NET Core Attach'.
3. Set a breakpoint at line of 17 in Program.cs.
4. Use command to "dotnet run" process.
5. Press F5 to select process and start debugging.

Expected behavior

It can normal debug and hit in 17 line.

Actual behavior

Investigation

1.This issue repro on all platforms.

[rajkumar42]

Fix is to change the attach templates from
"processId": "${command.pickProcess}"
to
"processId": "${command:pickProcess}"

Note, the change from dot to colon. Same goes for remote attach.

[gregg-miskelly]

In that case this is related to #1275.

I guess we could make an improved error message if we wanted.

[gregg-miskelly]

We discussed it and we think that the squiggles you get from VS Code should be good enough for folks who have pre-existing launch.json files to understand the problem. So we are resolving this as 'By Design' for now.