Index: src/main/java/hudson/plugins/warnings/parser/ParserRegistry.java
===================================================================
--- src/main/java/hudson/plugins/warnings/parser/ParserRegistry.java	(revision 21682)
+++ src/main/java/hudson/plugins/warnings/parser/ParserRegistry.java	(working copy)
@@ -262,6 +262,7 @@
         pclintParser.setName("PC-Lint");
         parsers.add(pclintParser);
         parsers.add(new BuckminsterParser());
+        parsers.add(new YuiCompressorParser());
         return Collections.unmodifiableList(parsers);
     }
 
Index: src/main/java/hudson/plugins/warnings/parser/YuiCompressorParser.java
===================================================================
--- src/main/java/hudson/plugins/warnings/parser/YuiCompressorParser.java	(revision 0)
+++ src/main/java/hudson/plugins/warnings/parser/YuiCompressorParser.java	(revision 0)
@@ -0,0 +1,87 @@
+package hudson.plugins.warnings.parser;
+
+import hudson.plugins.warnings.util.model.Priority;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * A parser for the YUI Compressor warnings.
+ */
+public class YuiCompressorParser extends RegexpDocumentParser {
+    /** Warning type of this parser. */
+    static final String WARNING_TYPE = "YUI Compressor";
+    /** Pattern of the YUI Compressor 2-lines warnings. */
+    private static final String YUI_COMPRESSOR_WARNING_PATTERN = "\\[WARNING\\] ([^:]+):line ([^:]+):column ([^:]+):(.*)\\r?\\n^(.*)$";
+
+    private static final Pattern unusedSymbolePattern = Pattern
+            .compile("The symbol [^ ]+ is declared but is apparently never used.*");
+    private static final Pattern unusedVariablePattern = Pattern
+            .compile("The variable [^ ]+ has already been declared in the same scope.*");
+
+    /**
+     * Creates a new instance of <code>YuiCompressorParser</code>.
+     */
+    public YuiCompressorParser() {
+        super(YUI_COMPRESSOR_WARNING_PATTERN, true, WARNING_TYPE);
+    }
+
+    /**
+     * Creates a new annotation for the specified pattern.
+     *
+     * @param matcher
+     *            the regular expression matcher
+     * @return a new annotation for the specified pattern
+     */
+    @Override
+    protected Warning createWarning(final Matcher matcher) {
+        final String messageHeader = matcher.group(4);
+        CategoryAndPriority categoryAndPriority = getCategoryAndPriority(messageHeader);
+        final String messageDetails = matcher.group(5);
+        final String message = messageHeader + " [" + messageDetails + "]";
+        return new Warning(matcher.group(1), getLineNumber(matcher.group(2)), WARNING_TYPE,
+                categoryAndPriority.getCategory(), message, categoryAndPriority.getPriority());
+    }
+
+    private CategoryAndPriority getCategoryAndPriority(final String message) {
+        if (message.startsWith("Found an undeclared symbol")) {
+            return CategoryAndPriority.UNDECLARED_SYMBOL;
+        }
+        if (message.startsWith("Try to use a single 'var' statement per scope")) {
+            return CategoryAndPriority.USE_SINGLE_VAR;
+        }
+        if (unusedSymbolePattern.matcher(message).matches()) {
+            return CategoryAndPriority.UNUSED_SYMBOL;
+        }
+        if (unusedVariablePattern.matcher(message).matches()) {
+            return CategoryAndPriority.DUPLICATE_VAR;
+        }
+        return CategoryAndPriority.UNKNOWN;
+    }
+
+    private static enum CategoryAndPriority {
+        UNDECLARED_SYMBOL("Undeclared symbol"), USE_SINGLE_VAR("Use single 'var' per scope",
+                Priority.LOW), UNUSED_SYMBOL("Unused symbol"), DUPLICATE_VAR("Duplicate variable",
+                Priority.HIGH), UNKNOWN("");
+
+        private final String category;
+        private final Priority priority;
+
+        private CategoryAndPriority(final String category) {
+            this(category, Priority.NORMAL);
+        }
+
+        private CategoryAndPriority(final String category, final Priority priority) {
+            this.category = category;
+            this.priority = priority;
+        }
+
+        public String getCategory() {
+            return category;
+        }
+
+        public Priority getPriority() {
+            return priority;
+        }
+    }
+}

Property changes on: src\main\java\hudson\plugins\warnings\parser\YuiCompressorParser.java
___________________________________________________________________
Added: svn:mime-type
   + text/plain
Added: svn:keywords
   + Date Author Id Revision HeadURL
Added: svn:eol-style
   + native