Add coverage support, improve logs and fix bugs

node_modules/@actions/core/lib/command.js

@@ -20,7 +20,7 @@ function issue(name, message = '') {
     issueCommand(name, {}, message);
 }
 exports.issue = issue;
-const CMD_PREFIX = '##[';
+const CMD_STRING = '::';
 class Command {
     constructor(command, properties, message) {
         if (!command) {
@@ -31,7 +31,7 @@ class Command {
         this.message = message;
     }
     toString() {
-        let cmdStr = CMD_PREFIX + this.command;
+        let cmdStr = CMD_STRING + this.command;
         if (this.properties && Object.keys(this.properties).length > 0) {
             cmdStr += ' ';
             for (const key in this.properties) {
@@ -40,12 +40,12 @@ class Command {
                     if (val) {
                         // safely append the val - avoid blowing up when attempting to
                         // call .replace() if message is not a string for some reason
-                        cmdStr += `${key}=${escape(`${val || ''}`)};`;
+                        cmdStr += `${key}=${escape(`${val || ''}`)},`;
                     }
                 }
             }
         }
-        cmdStr += ']';
+        cmdStr += CMD_STRING;
         // safely append the message - avoid blowing up when attempting to
         // call .replace() if message is not a string for some reason
         const message = `${this.message || ''}`;