Fix quoting

pmd-core/src/main/java/net/sourceforge/pmd/RuleSetFactory.java

@@ -46,6 +46,7 @@ import net.sourceforge.pmd.RuleSet.RuleSetBuilder;
 import net.sourceforge.pmd.lang.rule.RuleReference;
 import net.sourceforge.pmd.rules.RuleFactory;
 import net.sourceforge.pmd.util.ResourceLoader;
+import net.sourceforge.pmd.util.StringUtil;
 import net.sourceforge.pmd.util.internal.xml.PmdXmlReporter;
 import net.sourceforge.pmd.util.internal.xml.SchemaConstants;
 import net.sourceforge.pmd.util.internal.xml.XmlUtil;
@@ -644,14 +645,15 @@ final class RuleSetFactory {
         return new AccumulatingMessageHandler(
             entry -> {
                 Level level = entry.getSeverity() == XmlSeverity.WARNING ? Level.WARN : Level.ERROR;
-                reporter.logEx(level, entry.toString(), new Object[0], entry.getCause());
+                String quotedText = StringUtil.quoteMessageFormat(entry.toString());
+                reporter.logEx(level, quotedText, new Object[0], entry.getCause());
             },
             XmlSeverity.WARNING
         ) {
             @Override
             protected void printSummaryLine(String kind, XmlSeverity severity, String message) {
                 Level level = severity == XmlSeverity.WARNING ? Level.WARN : Level.ERROR;
-                reporter.log(level, message);
+                reporter.log(level, StringUtil.quoteMessageFormat(message));
             }
         };
     }

pmd-core/src/main/java/net/sourceforge/pmd/rules/RuleFactory.java

@@ -121,7 +121,11 @@ public class RuleFactory {
                 ruleReference.addExample(XmlUtil.parseTextNode(node));
                 break;
             case PRIORITY:
-                ruleReference.setPriority(RulePriority.valueOf(Integer.parseInt(XmlUtil.parseTextNode(node))));
+                RulePriority priority = parsePriority(err, node);
+                if (priority == null) {
+                    priority = RulePriority.MEDIUM;
+                }
+                ruleReference.setPriority(priority);
                 break;
             case PROPERTIES:
                 setPropertyValues(ruleReference, node, err);

pmd-core/src/main/java/net/sourceforge/pmd/util/internal/xml/XmlErrorMessages.java

@@ -36,7 +36,7 @@ public final class XmlErrorMessages {
     public static final String ERR__INVALID_LANG_VERSION = "Invalid language version ''{0}'' for language ''{1}'', supported versions are {2}";
 
     public static final String WARN__DEPRECATED_USE_OF_ATTRIBUTE = "The use of the ''{0}'' attribute is deprecated. Use a nested element, e.g. {1}";
-    public static final String ERR__INVALID_PRIORITY_VALUE = "Not a valid priority ''{0}'', expected a number in [1,5]";
+    public static final String ERR__INVALID_PRIORITY_VALUE = "Not a valid priority: ''{0}'', expected a number in [1,5]";
     public static final String ERR__UNSUPPORTED_PROPERTY_TYPE = "Unsupported property type ''{0}''";
 
     private XmlErrorMessages() {