From 0b92a7d4cbdb64adde33cfa9d3cd3d2f2137f2a4 Mon Sep 17 00:00:00 2001
From: Linda_pp <rhysd@users.noreply.github.com>
Date: Wed, 12 Apr 2017 12:06:07 +0900
Subject: [PATCH] Customizable minlines with g:markdown_minlines (#115)

---
 README.markdown     | 8 ++++++++
 syntax/markdown.vim | 5 ++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/README.markdown b/README.markdown
index cd79315..8c7c6d0 100644
--- a/README.markdown
+++ b/README.markdown
@@ -20,6 +20,14 @@ To disable markdown syntax concealing add the following to your vimrc:
 
     let g:markdown_syntax_conceal = 0
 
+Syntax highlight is synchronized in 50 lines. It may cause collapsed
+highlighting at large fenced code block.
+In the case, please set larger value in your vimrc:
+
+    let g:markdown_minlines = 100
+
+Note that setting too large value may cause bad performance on highlighting.
+
 ## License
 
 Copyright © Tim Pope.  Distributed under the same terms as Vim itself.
diff --git a/syntax/markdown.vim b/syntax/markdown.vim
index ad925cc..35dd1a3 100644
--- a/syntax/markdown.vim
+++ b/syntax/markdown.vim
@@ -33,7 +33,10 @@ endfor
 unlet! s:type
 unlet! s:done_include
 
-syn sync minlines=10
+if !exists('g:markdown_minlines')
+  let g:markdown_minlines = 50
+endif
+execute 'syn sync minlines=' . g:markdown_minlines
 syn case ignore
 
 syn match markdownValid '[<>]\c[a-z/$!]\@!'