negative variables

lesscpy/lessc/lexer.py

@@ -68,6 +68,7 @@ class LessLexer:
         'css_ident',
         'css_number',
         'css_color',
+        'less_variable',
         '&',
     ]
     significant_ws += list(set(reserved.values()))

lesscpy/lessc/parser.py

@@ -582,7 +582,7 @@ class LessParser(object):
     def p_variable_neg(self, p):
         """ variable                : '-' variable
         """
-        p[0] = '-' + p[2] 
+        p[0] = ['-', p[2]] 
         
     def p_variable_strange(self, p):
         """ variable                : t_popen variable t_pclose
@@ -593,7 +593,8 @@ class LessParser(object):
         """ variable                : less_variable
                                     | less_variable t_ws
         """
-        p[0] = p[1] 
+        p[0] = p[1]
+#        p[0] = tuple(list(p)[1:]) 
 
     def p_color(self, p):
         """ color                   : css_color

lesscpy/plib/variable.py

@@ -7,5 +7,11 @@ class Variable(Node):
         """
         self.name = self.tokens.pop(0)
         self.value = self.tokens[1]
+        if type(self.name) is tuple:
+            if len(self.name) > 1:
+                self.name, pad = self.name
+                self.value.append(pad)
+            else:
+                self.name = self.name[0]
         return self