How to find the built-in problem matchers' definitions?

Question

According to https://code.visualstudio.com/docs/editor/tasks , there may be many built-in problem matchers. For instance:

"label": "build",
"type": "shell",
"command": "make",
"problemMatcher": [ "$gcc", "$msCompile" ],
"group": "build"

My Question

How to find the definitions of $gcc and $msCompile?

Answer 1

Following @rioV8's comment, I searched the directories where built-in extensions are installed ( /usr/share/code/resources/app/extensions on Linux) for package.json files which contain an entry problemMatchers . These are the ones I found:

Extension vscode.less : "Less Language Basics"

• lessc : label "Lessc compiler"

Extension vscode.typescript-language-features : "TypeScript and JavaScript Language Features"

problem matchers:

• tsc : label "%typescript.problemMatchers.tsc.label%" –?

• tsc-watch : label "%typescript.problemMatchers.tscWatch.label%" –?

problem patterns:

• tsc

Extension vscode.cpp : "C/C++ Language Basics"

problem matchers:

• nvcc : no label

problem patterns:

• nvcc-location

Extension vscode.scss : "SCSS Language Basics"

• node-sass : label "Node Sass Compiler"

Strangely, this list is quite different from the one under Processing task output with problem matchers in the documentation. I couldn't find most that are listed, and I found one which isn't.