Search the system path for `program` in `launch.json`

Type: Feature Request

I currently have a launch.json set up for debugging a native Node.js addon on both Linux and OS X with gdb and llvm. Debugging a Node.js addon requires loading the main node executable which in turn dynamically loads the addon which is a shared library. So I have:

"type": "cppdbg",
"request": "launch",
"program": "/usr/bin/node",

which requires the full path to the program being debugged. Both gdb and llvm search the system path when invoking gdb node or llvm node, however the VSCode debugger does not invoke them as it checks that program exists.
Here is my full launch.json - https://github.com/mmomtchev/node-gdal-async/blob/master/.vscode/launch.json

issue に示されている launch.json 設定から始め、gdb または llvm を起動する前に cppdbg の起動フローが program の値をどのように検証するかを追跡します。node のようなプログラム名を受け入れ、絶対パスを要求する代わりにシステムパスを通じて解決できれば完了です。