diff --git a/README.markdown b/README.markdown
index b3fbccc..9cc4ac2 100644
--- a/README.markdown
+++ b/README.markdown
@@ -384,6 +384,8 @@ let g:pencil#autoformat_blacklist = [
       \ 'markdownRule',
       \ 'markdownHighlight[A-Za-z0-9]+',
       \ 'mkdCode',
+      \ 'mkdRule',
+      \ 'htmlH[0-9]',
       \ 'mkdIndentCode',
       \ 'markdownFencedCodeBlock',
       \ 'markdownInlineCode',
@@ -477,7 +479,7 @@ If no such lines found, _pencil_ falls back to the default wrap mode.
 
 Other plugins of specific interest to writers:
 
-* [tpope/vim-markdown][tvm], [plasticboy/vim-markdown][pvm] - Markdown syntax plugins
+* [tpope/vim-markdown][tvm], [plasticboy/vim-markdown][pvm], [gabrielelana/vim-markdown][gvm] - Markdown syntax plugins
 * [mattly/vim-markdown-enhancements][mvme] - highlighting for tables and footnotes
 * [tpope/vim-abolish][ab] - search for, substitute, and abbr. multiple variants of a word
 * [tommcdo/vim-exchange][ex] - easy text exchange operator for Vim
@@ -490,6 +492,7 @@ Other plugins of specific interest to writers:
 [jg]: http://github.com/junegunn/goyo.vim
 [tvm]: http://github.com/tpope/vim-markdown
 [pvm]: http://github.com/plasticboy/vim-markdown
+[gvm]: http://github.com/gabrielelana/vim-markdown
 [mvme]: http://github.com/mattly/vim-markdown-enhancements
 
 If you find the _pencil_ plugin useful, check out these others by [@reedes][re]:
diff --git a/plugin/pencil.vim b/plugin/pencil.vim
index aea7db4..531e740 100644
--- a/plugin/pencil.vim
+++ b/plugin/pencil.vim
@@ -61,13 +61,13 @@ if !exists('g:pencil#autoformat_blacklist')
   " by default, pencil does NOT start autoformat if inside any of
   " the following syntax groups
   "
-  "'markdown*' (tpope/vim-markdown)
-  "'mkdCode', 'mkdIndentCode' (plasticboy/vim-markdown)
-  "'markdownFencedCodeBlock', 'markdownInlineCode' (gabrielelana/vim-markdown)
-  "'mmdTable[A-Za-z0-9]*' (mattly/vim-markdown-enhancements)
-  "'txtCode' (timcharper/textile.vim)
-  "'rst*' (syntax file shipped with vim)
-  "'tex*' (syntax file shipped with vim)
+  " markdown* (tpope/vim-markdown)
+  " mkd*, htmlH[0-9] (plasticboy/vim-markdown)
+  " markdownFencedCodeBlock, markdownInlineCode, markdownRule, markdownH[0-9] (gabrielelana/vim-markdown)
+  " mmdTable[A-Za-z0-9]* (mattly/vim-markdown-enhancements)
+  " txtCode (timcharper/textile.vim)
+  " rst* (syntax file shipped with vim)
+  " tex* (syntax file shipped with vim)
   let g:pencil#autoformat_blacklist = [
         \ 'markdownCode',
         \ 'markdownH[0-9]',
@@ -77,6 +77,8 @@ if !exists('g:pencil#autoformat_blacklist')
         \ 'markdownRule',
         \ 'markdownHighlight[A-Za-z0-9]+',
         \ 'mkdCode',
+        \ 'mkdRule',
+        \ 'htmlH[0-9]',
         \ 'mkdIndentCode',
         \ 'markdownFencedCodeBlock',
         \ 'markdownInlineCode',