add Compositing and Blending Level 1 features

README.md

@@ -50,6 +50,7 @@ HISTORY
 
 ### v0.9 (in progress)
 
+  * Add Compositing and Blending Level 1 features
   * Add CSS Fonts Module Level 3 features
   * Split CSS Counter Styles Level 3 features from `css3-lists.vim`
   * Follow spec updates

after/syntax/css/compositing-1.vim

@@ -0,0 +1,4 @@
+" TODO: create cssCompositingProp and cssCompositingAttr
+syn keyword cssFontProp contained isolation
+syn match cssFontProp contained "\<\(mix\|background\)-blend-mode\>"
+syn keyword cssFontAttr contained multiply screen overlay darken lighten color-dodge color-burn hard-light soft-light difference exclusion hue saturation color luminosity

after/syntax/html.vim

@@ -1,4 +1,5 @@
 syn include @htmlCss syntax/css/html5-elements.vim
+syn include @htmlCss syntax/css/compositing-1.vim
 syn include @htmlCss syntax/css/css3-align.vim
 syn include @htmlCss syntax/css/css3-animations.vim
 syn include @htmlCss syntax/css/css3-background.vim

test/test.css

@@ -71,6 +71,24 @@
   display: currentColor;
 }
 
+.compositing {
+  mix-blend-mode: multiply;
+  isolation: screen;
+  background-blend-mode: overlay;
+  display: darken;
+  display: lighten;
+  display: color-dodge;
+  display: color-burn;
+  display: hard-light;
+  display: soft-light;
+  display: difference;
+  display: exclusion;
+  display: hue;
+  display: saturation;
+  display: color;
+  display: luminosity;
+}
+
 .content {
   move-to: inhibit;
   page-policy: here;