Support for IE+MathPlayer.

Sync with latest Maruku.

lib/maruku/input/charsource.rb

@@ -205,8 +205,9 @@ class CharSourceStrscan
 	include SpanLevelParser
 	include MaRuKu::Strings
 	
-	def initialize(s)
+	def initialize(s, parent=nil)
 		@s = StringScanner.new(s)
+		@parent = parent
 	end
 	
 	# Return current char as a FixNum (or nil).
@@ -273,9 +274,9 @@ end
 
 
 class CharSourceDebug
-	def initialize(s)
-		@a = CharSourceManual.new(s)
-		@b = CharSourceStrscan.new(s)
+	def initialize(s, parent)
+		@a = CharSourceManual.new(s, parent)
+		@b = CharSourceStrscan.new(s, parent)
 	end
 	
 	def method_missing(methodname, *args)

lib/maruku/input/parse_doc.rb

@@ -127,6 +127,7 @@ Disabled by default because of security concerns.
 						result[:unresolved_references] << " #{v}"
 					end
 					
+				#	$stderr.puts "Unresolved reference #{v.inspect} (avail: #{self.ald.keys.inspect})"
 					result[v.to_sym] = true
 				end
 			else

lib/maruku/input/parse_span_better.rb

@@ -278,10 +278,10 @@ module MaRuKu; module In; module Markdown; module SpanLevelParser
 	end
 
 	def extension_meta(src, con, break_on_chars)
-		if m = src.read_regexp(/(\w)+\:/)
+		if m = src.read_regexp(/([^:]+):/)
 			name = m[1]
-			content = m[2]
 			al = read_attribute_list(src, con, break_on_chars)
+#			puts "#{name}=#{al.inspect}"
 			self.doc.ald[name] = al
 		 	con.push md_ald(name, al)
 		else
@@ -624,6 +624,11 @@ module MaRuKu; module In; module Markdown; module SpanLevelParser
 			con.push_element md_im_image(alt_text, url, title)
 		when ?[ # link ref
 			ref_id = read_ref_id(src,con)
+			if ref_id.size == 0
+				ref_id =  alt_text.to_s.downcase.gsub(' ','_')
+			else
+				ref_id = ref_id.downcase
+			end
 			con.push_element md_image(alt_text, ref_id)
 		else # no stuff
 			con.push_elements children