From 8a76c845deed501411f9fe93eec6ecb9a8f78096 Mon Sep 17 00:00:00 2001
From: Igor Mikushkin <igor.mikushkin@gmail.com>
Date: Thu, 21 Nov 2019 18:27:28 +0400
Subject: [PATCH] Github flavored parsing of underscores

---
 syntax/markdown.vim | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/syntax/markdown.vim b/syntax/markdown.vim
index efec3eb..348c500 100644
--- a/syntax/markdown.vim
+++ b/syntax/markdown.vim
@@ -89,11 +89,11 @@ if has('conceal') && get(g:, 'markdown_syntax_conceal', 1) == 1
   let s:concealends = ' concealends'
 endif
 exe 'syn region markdownItalic matchgroup=markdownItalicDelimiter start="\S\@<=\*\|\*\S\@=" end="\S\@<=\*\|\*\S\@=" keepend contains=markdownLineStart,@Spell' . s:concealends
-exe 'syn region markdownItalic matchgroup=markdownItalicDelimiter start="\S\@<=_\|_\S\@=" end="\S\@<=_\|_\S\@=" keepend contains=markdownLineStart,@Spell' . s:concealends
+exe 'syn region markdownItalic matchgroup=markdownItalicDelimiter start="\w\@<!_\S\@=" end="\S\@<=_\w\@!" keepend contains=markdownLineStart,@Spell' . s:concealends
 exe 'syn region markdownBold matchgroup=markdownBoldDelimiter start="\S\@<=\*\*\|\*\*\S\@=" end="\S\@<=\*\*\|\*\*\S\@=" keepend contains=markdownLineStart,markdownItalic,@Spell' . s:concealends
-exe 'syn region markdownBold matchgroup=markdownBoldDelimiter start="\S\@<=__\|__\S\@=" end="\S\@<=__\|__\S\@=" keepend contains=markdownLineStart,markdownItalic,@Spell' . s:concealends
+exe 'syn region markdownBold matchgroup=markdownBoldDelimiter start="\w\@<!__\S\@=" end="\S\@<=__\w\@!" keepend contains=markdownLineStart,markdownItalic,@Spell' . s:concealends
 exe 'syn region markdownBoldItalic matchgroup=markdownBoldItalicDelimiter start="\S\@<=\*\*\*\|\*\*\*\S\@=" end="\S\@<=\*\*\*\|\*\*\*\S\@=" keepend contains=markdownLineStart,@Spell' . s:concealends
-exe 'syn region markdownBoldItalic matchgroup=markdownBoldItalicDelimiter start="\S\@<=___\|___\S\@=" end="\S\@<=___\|___\S\@=" keepend contains=markdownLineStart,@Spell' . s:concealends
+exe 'syn region markdownBoldItalic matchgroup=markdownBoldItalicDelimiter start="\w\@<!___\S\@=" end="\S\@<=___\w\@!" keepend contains=markdownLineStart,@Spell' . s:concealends
 
 syn region markdownCode matchgroup=markdownCodeDelimiter start="`" end="`" keepend contains=markdownLineStart
 syn region markdownCode matchgroup=markdownCodeDelimiter start="`` \=" end=" \=``" keepend contains=markdownLineStart