From dfb9431cd0f69c78308619afb86cfefb0b5003bb Mon Sep 17 00:00:00 2001
From: Mijail Rondon <mijail@riseup.net>
Date: Tue, 26 Nov 2019 23:32:07 -0500
Subject: [PATCH 1/2] Problem matcher elixir

---
 .github/elixir.json | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 .github/elixir.json

diff --git a/.github/elixir.json b/.github/elixir.json
new file mode 100644
index 0000000..84dd88c
--- /dev/null
+++ b/.github/elixir.json
@@ -0,0 +1,16 @@
+{
+  "problemMatcher": [
+    {
+      "owner": "elixir",
+      "pattern": [
+        {
+          "regexp": "^(\\*\\* \\(.*\\) )?((.:)?[^:]*):(\\d+)(:(\\d+))?: (.*)$",
+          "file": 2,
+          "line": 4,
+          "column": 6,
+          "message": 7
+        }
+      ]
+    }
+  ]
+}

From c1ab867da977b9183d98a11f63d9338eef5ad985 Mon Sep 17 00:00:00 2001
From: Mijail Rondon <mijail@riseup.net>
Date: Tue, 26 Nov 2019 23:38:31 -0500
Subject: [PATCH 2/2] Add error and warning matchers

---
 .github/elixir.json | 15 +++++++++++++++
 src/setup-elixir.js |  3 +++
 2 files changed, 18 insertions(+)

diff --git a/.github/elixir.json b/.github/elixir.json
index 84dd88c..4d1d0d1 100644
--- a/.github/elixir.json
+++ b/.github/elixir.json
@@ -11,6 +11,21 @@
           "message": 7
         }
       ]
+    },
+    {
+      "owner": "elixir-warning",
+      "pattern": [
+        {
+          "regexp": "^(warning: (.*))$",
+          "message": 2
+        },
+        {
+          "regexp": "^(  )((.:)?[^:]*):(\\d+)(:(\\d+))?$",
+          "file": 2,
+          "line": 4,
+          "column": 6
+        }
+      ]
     }
   ]
 }
diff --git a/src/setup-elixir.js b/src/setup-elixir.js
index 247ccae..b25fdd5 100644
--- a/src/setup-elixir.js
+++ b/src/setup-elixir.js
@@ -38,6 +38,9 @@ async function main() {
 
   if (installRebar) await exec('mix local.rebar --force')
   if (installHex) await exec('mix local.hex --force')
+
+  const matchersPath = path.join(__dirname, '..', '.github');
+  console.log(`##[add-matcher]${path.join(matchersPath, 'elixir.json')}`);
 }
 
 function checkPlatform() {