complete rewrite with somewhat more proper support of markdown syntax and more compliant token search

mdpp.rb

@@ -89,7 +89,7 @@ module MDPP
           line = word
           next
         end
-        line = [line, word].join(' ')
+        line = [line, word].join(line.end_with?("\n") ? '' : ' ')
       end
       output.append(line.lstrip)
       output.join("\n")

test.md

@@ -6,16 +6,48 @@
 > Block quote **bold** and *italics* test
 > Block quote **bold *italics* mix** test
 
+> Nested block quote test
+> > with a very stupid secondary quote syntax
+this should end the block quote btw
+
 ## Header level 2
 
+also header level 2
+---
+
+also header level 1
+===
+
+not a header level2
+---asdlkashdlkasjd
+
+not a header level1
+===asdajlsdkjlsd
+
+  not a header level2
+  ---
+
+  not a header level1
+  ===
 [link](http://example.com) 
 ![image alt text](http://example.com)
 
-```plaintext
+```  plaintext
 code *block*
 eat my shit
 ```
 
+> It is also of importance to note that this code is a hello world program,
+> written entirely in C++.
+>
+> ```cpp
+> int main() {
+>     cout << "Hello **world!**";
+> }
+> ```
+
+> theoretical failure test case
+> **bold** **with space**
 paragraph with ``inline code block``
 
 - Unordered list element 1
@@ -24,6 +56,11 @@ paragraph with ``inline code block``
 1. Ordered list element 1
 2. Ordered list element 2
 
+1. [Link](https://ass.com)
+    2. [Lv2](https://ass.com)
+    3. [Lv2](https://anus.com)
+4. shit
+
 This is not a list
 - because it continues the paragraph
 - this is how it should be, like it or not