Include annotation information when reporting errors (fixes #5).

.eslintrc.json

@@ -18,7 +18,10 @@
   "reportUnusedDisableDirectives": true,
   "rules": {
     "indent": ["error", 2],
+    "function-call-argument-newline": "off",
     "one-var": "off",
+    "padded-blocks": "off",
+    "prefer-named-capture-group": "off",
     "sort-keys": "off",
 
     "node/handle-callback-err": "error",
@@ -59,6 +62,7 @@
     "node/prefer-promises/dns": "error",
     "node/prefer-promises/fs": "error",
 
+    "unicorn/no-unsafe-regex": "off",
     "unicorn/prefer-module": "off",
     "unicorn/prefer-top-level-await": "off"
   }

dist/index.js

@@ -31663,7 +31663,28 @@ const core = __nccwpck_require__(2186);
 const {"main": markdownlintCli2} = __nccwpck_require__(9247);
 
 const logMessage = core.info;
-const logError = core.error;
+const logError = (error) => {
+  // eslint-disable-next-line init-declarations
+  let annotation;
+  const match = error.match(/^([^:]+):(\d+)(?::(\d+))?\s(\S+)\s(.+)$/u);
+  if (match) {
+    const [
+      ,
+      file,
+      startLine,
+      startColumn,
+      ,
+      title
+    ] = match;
+    annotation = {
+      title,
+      file,
+      startLine,
+      startColumn
+    };
+  }
+  core.error(error, annotation);
+};
 const argv =
   core.getInput("globs").
     split("\n").

markdownlint-cli2-action.js

@@ -6,7 +6,28 @@ const core = require("@actions/core");
 const {"main": markdownlintCli2} = require("markdownlint-cli2");
 
 const logMessage = core.info;
-const logError = core.error;
+const logError = (error) => {
+  // eslint-disable-next-line init-declarations
+  let annotation;
+  const match = error.match(/^([^:]+):(\d+)(?::(\d+))?\s(\S+)\s(.+)$/u);
+  if (match) {
+    const [
+      ,
+      file,
+      startLine,
+      startColumn,
+      ,
+      title
+    ] = match;
+    annotation = {
+      title,
+      file,
+      startLine,
+      startColumn
+    };
+  }
+  core.error(error, annotation);
+};
 const argv =
   core.getInput("globs").
     split("\n").