Use different matcher for second regex

Author: ammaraskar

sphinx_matcher.json

@@ -9,7 +9,12 @@
                     "line": 2,
                     "severity": 3,
                     "message": 4
-                },
+                }
+            ]
+        },
+        {
+            "owner": "sphinx-problem-matcher-loose",
+            "pattern": [
                 {
                     "_comment": "A bit of a looser pattern, doesn't look for line numbers, just looks for file names relying on them to start with / and end with .rst",
                     "regexp": "(\/.*\\.rst):\\s+(\\w*):\\s+(.*)$",

test_matcher.js

@@ -4,7 +4,10 @@ var fs = require('fs');
 const matcherJSON = fs.readFileSync('sphinx_matcher.json');
 const matcher = JSON.parse(matcherJSON);
 
-const patterns = matcher.problemMatcher[0].pattern;
+let patterns = [];
+for (const problemMatcher of matcher.problemMatcher) {
+    patterns.push(problemMatcher.pattern[0]);
+}
 
 for (const pattern of patterns) {
     console.log("Patterns under test: ", pattern.regexp);