provide problem matchers for common compilers

[dlech]

Please add contributes.problemMatchers as described here.

[sean-mcmanus]

For what build systems? gcc?

[dlech]

gcc definitely. Makefile might be useful too. I imagine others might be interested in msvc, but it is not important to me.

[agauniyal]

I see this was added in recent changelogs for this plugin, what is it exactly?

[dlech]

A problem matcher is something you can add to a task.

{
    "version": "2.0.0",
    "tasks": [
        {
            "taskName": "build",
            "command": "gcc",
            "args": [
                "-g",
                "hello.c"
            ],
            "type": "process",
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "problemMatcher": "$gcc"
        }
    ]
}

It matches errors and warnings in the task output (used to be in the output panel, but now with tasks 2.0 in the terminal panel).

> Executing task: gcc hello.c <

hello.c:3:1: warning: return type of 'main' is not 'int' [-Wmain-return-type]
void main(void) {
^
hello.c:3:1: note: change return type to 'int'
void main(void) {
^~~~
int
hello.c:5:2: error: use of undeclared identifier 'syntax'
        syntax error
        ^
1 warning and 1 error generated.
The terminal process terminated with exit code: 1

Terminal will be reused by tasks, press any key to close it.

It uses the information in the matching text to list the items in the problem panels and also indicate them in the source code with squiggles.

[dlech]

Looks like it is working, so closing. Thanks!