fixes webpack-contrib/css-loader#164

Author: sokra

index.js

@@ -204,16 +204,25 @@ module.exports = postcss.plugin('postcss-modules-local-by-default', function (op
       if(/keyframes$/.test(atrule.name)) {
         var globalMatch = /^\s*:global\s*\((.+)\)\s*$/.exec(atrule.params);
         var localMatch = /^\s*:local\s*\((.+)\)\s*$/.exec(atrule.params);
+        var globalKeyframes = globalMode;
         if(globalMatch) {
           if(pureMode) {
             throw atrule.error('@keyframes :global(...) is not allowed in pure mode');
           }
           atrule.params = globalMatch[1];
+          globalKeyframes = true;
         } else if(localMatch) {
           atrule.params = localMatch[0];
+          globalKeyframes = false;
         } else if(!globalMode) {
           atrule.params = ':local(' + atrule.params + ')';
         }
+        atrule.walkDecls(function(decl) {
+          localizeDecl(decl, {
+            options: options,
+            global: globalKeyframes
+          });
+        });
       } else if(atrule.nodes) {
         atrule.nodes.forEach(function(decl) {
           if(decl.type === 'decl') {

test.js

@@ -364,7 +364,10 @@ var tests = [
       ':global .b { background: url(image.png); }\n' +
       '.c { background: url("./image.png"); }\n' +
       '@font-face { src: url("./font.woff"); }\n' +
-      '@-webkit-font-face { src: url("./font.woff"); }',
+      '@-webkit-font-face { src: url("./font.woff"); }\n' +
+      '@media screen { .a { src: url("./image.png"); } }\n' +
+      '@keyframes :global(ani1) { 0% { src: url("image.png"); } }\n' +
+      '@keyframes ani2 { 0% { src: url("./image.png"); } }',
     options: {
       rewriteUrl: function(global, url) {
         var mode = global ? 'global' : 'local';
@@ -375,7 +378,10 @@ var tests = [
       '.b { background: url((global\\)image.png\\\"global\\\"); }\n' +
       ':local(.c) { background: url(\"(local)./image.png\\\"local\\\"\"); }\n' +
       '@font-face { src: url(\"(local)./font.woff\\\"local\\\"\"); }\n' +
-      '@-webkit-font-face { src: url(\"(local)./font.woff\\\"local\\\"\"); }'
+      '@-webkit-font-face { src: url(\"(local)./font.woff\\\"local\\\"\"); }\n' +
+      '@media screen { :local(.a) { src: url("(local)./image.png\\"local\\""); } }\n' +
+      '@keyframes ani1 { 0% { src: url("(global)image.png\\"global\\""); } }\n' +
+      '@keyframes :local(ani2) { 0% { src: url("(local)./image.png\\"local\\""); } }'
   },
   {
     should: 'not crash on atrule without nodes',