Basic functionality and basic tests for import silent

lib/less/parser.js

@@ -1168,7 +1168,7 @@ less.Parser = function Parser(env) {
                     if (c === '{' || c === '}' || c === ';' || c === ',' || c === ')') { break }
                 }
 
-                if (elements.length > 0) { return new(tree.Selector)(elements, extendList); }
+                if (elements.length > 0) { return new(tree.Selector)(elements, extendList, i, env.currentFileInfo); }
                 if (extendList.length) { error("Extend must be used to extend a selector, it cannot be used on its own"); }
             },
             attribute: function () {

lib/less/tree/ruleset.js

@@ -241,24 +241,36 @@ tree.Ruleset.prototype = {
         } else {
             if (rules.length > 0) {
                 debugInfo = tree.debugInfo(env, this);
-                selector = this.paths.map(function (p) {
-                    return p.map(function (s) {
-                        return s.toCSS(env);
-                    }).join('').trim();
-                }).join(env.compress ? ',' : ',\n');
+                selector = this.paths
+                    .filter(function(p) {
+                        var i;
+                        for(i = 0; i < p.length; i++) {
+                            if (!p[i].isSilent()) {
+                                return true;
+                            }
+                            return false;
+                        }
+                    })
+                    .map(function (p) {
+                        return p.map(function (s) {
+                            return s.toCSS(env);
+                        }).join('').trim();
+                    }).join(env.compress ? ',' : ',\n');
 
-                // Remove duplicates
-                for (var i = rules.length - 1; i >= 0; i--) {
-                    if (rules[i].slice(0, 2) === "/*" ||  _rules.indexOf(rules[i]) === -1) {
-                        _rules.unshift(rules[i]);
+                if (selector) {
+                    // Remove duplicates
+                    for (var i = rules.length - 1; i >= 0; i--) {
+                        if (rules[i].slice(0, 2) === "/*" ||  _rules.indexOf(rules[i]) === -1) {
+                            _rules.unshift(rules[i]);
+                        }
                     }
-                }
-                rules = _rules;
+                    rules = _rules;
 
-                css.push(debugInfo + selector + 
-                        (env.compress ? '{' : ' {\n  ') +
-                        rules.join(env.compress ? '' : '\n  ') +
-                        (env.compress ? '}' : '\n}\n'));
+                    css.push(debugInfo + selector +
+                            (env.compress ? '{' : ' {\n  ') +
+                            rules.join(env.compress ? '' : '\n  ') +
+                            (env.compress ? '}' : '\n}\n'));
+                }
             }
         }
         css.push(rulesets);

lib/less/tree/selector.js

@@ -1,8 +1,9 @@
 (function (tree) {
 
-tree.Selector = function (elements, extendList) {
+tree.Selector = function (elements, extendList, index, currentFileInfo) {
     this.elements = elements;
     this.extendList = extendList || [];
+    this.currentFileInfo = currentFileInfo || {}; // TODO remove
 };
 tree.Selector.prototype = {
     type: "Selector",
@@ -36,7 +37,7 @@ tree.Selector.prototype = {
             return e.eval(env);
         }), this.extendList.map(function(extend) {
             return extend.eval(env);
-        }));
+        }), this.index, this.currentFileInfo);
     },
     toCSS: function (env) {
         if (this._css) { return this._css }
@@ -56,6 +57,9 @@ tree.Selector.prototype = {
         }).join('');
 
         return this._css;
+    },
+    isSilent: function() {
+        return this.currentFileInfo.silent;
     }
 };
 

test/css/import-silent.css

@@ -0,0 +1,3 @@
+.b {
+  color: red;
+}

test/less/import-silent.less

@@ -0,0 +1,6 @@
+@import (silent) url("import-once.less");
+@import (silent) url("import/import-silent.less");
+
+.b {
+  .a();
+}

test/less/import/import-silent.less

@@ -0,0 +1,3 @@
+.a {
+  color: red;
+}