Allow Uglify beautifier options in configuration.

grails-app/resourceMappers/org/grails/plugin/resource/minified/js/uglify/UglifyJsResourceMapper.groovy

@@ -38,7 +38,7 @@ class UglifyJsResourceMapper implements GrailsApplicationAware {
 
         try {
             Date start = new Date()
-            def output = new UglifyEngine().minify(original.text, [filename: original.name, noMunge: config?.noMunge ?: false])
+            def output = new UglifyEngine().minify(original.text, [filename: original.name] + config)
             target.write(output)
 
             resource.processedFile = target

src/groovy/org/grails/plugin/resource/minified/js/uglify/UglifyEngine.groovy

@@ -1,5 +1,6 @@
 package org.grails.plugin.resource.minified.js.uglify
 
+import groovy.json.JsonBuilder
 import org.springframework.core.io.ClassPathResource
 import org.mozilla.javascript.Context
 import org.mozilla.javascript.Scriptable
@@ -66,8 +67,9 @@ class UglifyEngine {
                     compressedAst.mangle_names()
 """
 
+            def printOptions = new JsonBuilder(options?.beautifierOptions ?: [:]).toString()
             uglifyCommand += """\
-                    return compressedAst.print_to_string()
+                    return compressedAst.print_to_string($printOptions)
                 }())
 """
 

test/unit/org/grails/plugins/resource/minified/js/uglify/UglifyEngineTests.groovy

@@ -33,5 +33,14 @@ class UglifyEngineTests extends GrailsUnitTestCase {
         assert output.contains("Private")
         assert !output.contains("comment")
     }
+
+    void testBeautifier() {
+        def input = "var unicodeChar = '\u24b6';"
+        def output = uglifyEngine.minify(input, [filename: "In memory file"])
+        assert !output.contains("u24b6")
+
+        output = uglifyEngine.minify(input, [filename: "In memory file", beautifierOptions: [ascii_only: true]])
+        assert output.contains("u24b6")
+    }
 }