Issue81 fix hsl compression

build.xml

@@ -33,8 +33,8 @@
                deprecation="off"
                debug="on"
                includeantruntime="false"
-	           target="1.5"
-               source="1.5">
+	           target="9"
+               source="9">
             <classpath>
                 <pathelement location="${lib.dir}/jargs-1.0.jar"/>
                 <pathelement location="${lib.dir}/rhino-1.7R2.jar"/>

src/com/yahoo/platform/yui/compressor/CssCompressor.java

@@ -338,7 +338,6 @@ public void compress(Writer out, int linebreakpos)
         } while (!(css.equals(oldCss)));
 
         // We do the same with % but don't replace the 0% in keyframes
-        String oldCss;
         p = Pattern.compile("(?i)(: ?)((?:[0-9a-z-.]+ )*?)?(?:0?\\.)?0(?:%)");
         do {
           oldCss = css;
@@ -347,15 +346,16 @@ public void compress(Writer out, int linebreakpos)
         } while (!(css.equals(oldCss)));
 
         //Replace the keyframe 100% step with 'to' which is shorter
-        p = Pattern.compile("(?i)(^|,|{) ?(?:100% ?{)");
+        p = Pattern.compile("(?i)(^|,|\\{) ?(?:100% ?\\{)");
         do {
           oldCss = css;
           m = p.matcher(css);
           css = m.replaceAll("$1to{");
         } while (!(css.equals(oldCss)));
 
         // Replace 0(px,em,%) with 0 inside groups (e.g. -MOZ-RADIAL-GRADIENT(CENTER 45DEG, CIRCLE CLOSEST-SIDE, ORANGE 0%, RED 100%))
-        p = Pattern.compile("(?i)\\( ?((?:[0-9a-z-.]+[ ,])*)?(?:0?\\.)?0(?:px|em|%|in|cm|mm|pc|pt|ex|deg|g?rad|m?s|k?hz)");
+        // Avoid replacement within hsla(), where percents are required for `s` and `l` arguments.
+        p = Pattern.compile("(?i)(?<!hsla?|rgba?)\\( ?((?:[0-9a-z-.]+[ ,])*)?(?:0?\\.)?0(?:px|em|%|in|cm|mm|pc|pt|ex|deg|g?rad|m?s|k?hz)");
         do {
           oldCss = css;
           m = p.matcher(css);

tests/hsla-issue81.css.min

@@ -1 +1 @@
-.color_chip{color:hsl(27,0%,50%);background:rgba(195,198,214,0.85)}
+.color_chip{color:hsla(27,0%,50%,1);background:rgba(195,198,214,0.85)}

tests/rgb-issue81.css.FAIL

@@ -1,4 +1,4 @@
 .color_chip {
-    color: color: rgb(0%, 50%, 50%);
+    color: rgb(0%, 50%, 50%);
     background: rgba(195, 198, 214, 0.85);
 }

tests/rgb-issue81.css.min

@@ -1 +1 @@
-.color_chip{color: rgb(0%, 50%, 50%);background:rgba(195,198,214,0.85)}
+.color_chip{color:rgb(0%,50%,50%);background:rgba(195,198,214,0.85)}