-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!`/ end=/\(\([^\\]\|^\)\\\)\@<!`/' . s:concealends
-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!``/ skip=/[^`]`[^`]/ end=/\(\([^\\]\|^\)\\\)\@<!``/' . s:concealends
-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/^\s*\z(`\{3,}\)[^`]*$/ end=/^\s*\z1`*\s*$/' . s:concealends
-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!\~\~/ end=/\(\([^\\]\|^\)\\\)\@<!\~\~/' . s:concealends
-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/^\s*\z(\~\{3,}\)\s*[0-9A-Za-z_+-]*\s*$/ end=/^\s*\z1\~*\s*$/' . s:concealends
-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start="<pre[^>]*\\\@<!>" end="</pre>"' . s:concealends
-execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start="<code[^>]*\\\@<!>" end="</code>"' . s:concealends
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!`/ end=/`/' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!``/ skip=/[^`]`[^`]/ end=/\(\([^\\]\|^\)\\\)\@<!``/' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/^\s*\z(`\{3,}\)[^`]*$/ end=/^\s*\z1`*\s*$/' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!\~\~/ end=/\(\([^\\]\|^\)\\\)\@<!\~\~/' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/^\s*\z(\~\{3,}\)\s*[0-9A-Za-z_+-]*\s*$/ end=/^\s*\z1\~*\s*$/' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start="<pre[^>]*\\\@<!>" end="</pre>"' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start="<code[^>]*\\\@<!>" end="</code>"' . s:concealcode