Index: hatena_style.rb
===================================================================
--- hatena_style.rb	(リビジョン 37218)
+++ hatena_style.rb	(作業コピー)
@@ -293,10 +293,17 @@
       @title = Hatena::Title.new('') # dummy
       @body  = self
       @elems = Array.new
+      pbuffer = '' # paragraph buffer
+      flush_pbuffer = lambda{
+        next if pbuffer.empty?
+        @elems.push Hatena::Paragraph.new(pbuffer)
+        pbuffer.replace('')
+      }
       lines  = str.concat("\n").scan(/.*\n/)
       until lines.empty?
         case
         when lines[0][0] == ?-
+          flush_pbuffer.call
           buffer = ''
           until lines.empty?
             break unless lines[0][0] == ?-
@@ -304,6 +311,7 @@
           end
           @elems.push Hatena::Itemize.new(buffer)
         when lines[0][0] == ?+
+          flush_pbuffer.call
           buffer = ''
           until lines.empty?
             break unless lines[0][0] == ?+
@@ -311,6 +319,7 @@
           end
           @elems.push Hatena::Enumerate.new(buffer)
         when lines[0][0] == ?:
+          flush_pbuffer.call
           buffer = ''
           until lines.empty?
             break unless lines[0][0] == ?:
@@ -319,6 +328,7 @@
           end
           @elems.push Hatena::Description.new(buffer)
         when lines[0] == ">>\n"
+          flush_pbuffer.call
           buffer = ''
           nest = 0
           until lines.empty?
@@ -329,6 +339,7 @@
           end
           @elems.push Hatena::Quote.new(buffer)
         when lines[0] == ">|\n"
+          flush_pbuffer.call
           buffer = ''
           until lines.empty?
             str1 = lines.shift
@@ -337,6 +348,7 @@
           end
           @elems.push Hatena::Verbatim.new(buffer)
         when lines[0] == ">||\n"
+          flush_pbuffer.call
           buffer = ''
           until lines.empty?
             str1 = lines.shift
@@ -345,11 +357,13 @@
           end
           @elems.push Hatena::SuperVerbatim.new(buffer)
         when lines[0][0,5] == '><!--'
+          flush_pbuffer.call
           # comment, throwing away
           until lines.empty?
             break if /--><$/ =~ lines.shift
           end
         when lines[0][0,2] == '><'
+          flush_pbuffer.call
           buffer = ''
           until lines.empty?
             str1 = lines.shift
@@ -358,15 +372,13 @@
           end
           @elems.push Hatena::UnParagraph.new(buffer)
         else
-          buffer = ''
-          until lines.empty?
-            break if /\A(\-|\+|\:|\>[\<\>\|])/ =~ lines[0] and not buffer.empty?
-            buffer.concat lines.shift
-            break if buffer[-3..-1] == "\n\n\n"
+          pbuffer.concat lines.shift
+          if pbuffer[-3..-1] == "\n\n\n"
+            flush_pbuffer.call
           end
-          @elems.push Hatena::Paragraph.new(buffer)
         end
       end
+      flush_pbuffer.call
     end
   end