Fix Less load paths, simplify builder error output. Fixes #461

middleman-core/lib/middleman-core/renderers/less.rb

@@ -0,0 +1,46 @@
+require "less"
+
+module Middleman
+  module Renderers
+    
+    # Sass renderer
+    module Less
+  
+      # Setup extension
+      class << self
+    
+        # Once registered
+        def registered(app)
+          # Default sass options
+          app.set :less, {}
+      
+          app.before_configuration do
+            template_extensions :less => :css
+          end
+
+          # Tell Tilt to use it as well (for inline sass blocks)
+          ::Tilt.register 'less', LocalLoadingLessTemplate
+          ::Tilt.prefer(LocalLoadingLessTemplate)
+        end
+    
+        alias :included :registered
+      end
+  
+      # A SassTemplate for Tilt which outputs debug messages
+      class LocalLoadingLessTemplate < ::Tilt::LessTemplate
+  
+        def prepare
+          if ::Less.const_defined? :Engine
+            @engine = ::Less::Engine.new(data)
+          else
+            $stderr.puts "HEEERE"
+            parser  = ::Less::Parser.new(options.merge :filename => eval_file, :line => line, :paths => [".", File.dirname(eval_file)])
+            @engine = parser.parse(data)
+          end
+        end
+        
+      end
+  
+    end
+  end
+end