Updated runtime files.
diff --git a/runtime/syntax/markdown.vim b/runtime/syntax/markdown.vim
new file mode 100644
index 0000000..4ec5dd5
--- /dev/null
+++ b/runtime/syntax/markdown.vim
@@ -0,0 +1,105 @@
+" Vim syntax file
+" Language: Markdown
+" Maintainer: Tim Pope <vimNOSPAM@tpope.org>
+" Filenames: *.markdown
+" Last Change: 2010 May 21
+
+if exists("b:current_syntax")
+ finish
+endif
+
+runtime! syntax/html.vim
+unlet! b:current_syntax
+
+syn sync minlines=10
+syn case ignore
+
+syn match markdownValid '[<>]\S\@!'
+syn match markdownValid '&\%(#\=\w*;\)\@!'
+
+syn match markdownLineStart "^[<@]\@!" nextgroup=@markdownBlock
+
+syn cluster markdownBlock contains=markdownH1,markdownH2,markdownH3,markdownH4,markdownH5,markdownH6,markdownBlockquote,markdownListMarker,markdownOrderedListMarker,markdownCodeBlock,markdownRule
+syn cluster markdownInline contains=markdownLineBreak,markdownLinkText,markdownItalic,markdownBold,markdownCode,markdownEscape,@htmlTop
+
+syn match markdownH1 ".\+\n=\+$" contained contains=@markdownInline,markdownHeadingRule
+syn match markdownH2 ".\+\n-\+$" contained contains=@markdownInline,markdownHeadingRule
+
+syn match markdownHeadingRule "^[=-]\+$" contained
+
+syn region markdownH1 matchgroup=markdownHeadingDelimiter start="##\@!" end="#*\s*$" keepend oneline contains=@markdownInline contained
+syn region markdownH2 matchgroup=markdownHeadingDelimiter start="###\@!" end="#*\s*$" keepend oneline contains=@markdownInline contained
+syn region markdownH3 matchgroup=markdownHeadingDelimiter start="####\@!" end="#*\s*$" keepend oneline contains=@markdownInline contained
+syn region markdownH4 matchgroup=markdownHeadingDelimiter start="#####\@!" end="#*\s*$" keepend oneline contains=@markdownInline contained
+syn region markdownH5 matchgroup=markdownHeadingDelimiter start="######\@!" end="#*\s*$" keepend oneline contains=@markdownInline contained
+syn region markdownH6 matchgroup=markdownHeadingDelimiter start="#######\@!" end="#*\s*$" keepend oneline contains=@markdownInline contained
+
+syn match markdownBlockquote ">\s" contained nextgroup=@markdownBlock
+
+syn region markdownCodeBlock start=" \|\t" end="$" contained
+
+" TODO: real nesting
+syn match markdownListMarker " \{0,4\}[-*+]\%(\s\+\S\)\@=" contained
+syn match markdownOrderedListMarker " \{0,4}\<\d\+\.\%(\s*\S\)\@=" contained
+
+syn match markdownRule "\* *\* *\*[ *]*$" contained
+syn match markdownRule "- *- *-[ -]*$" contained
+
+syn match markdownLineBreak "\s\{2,\}$"
+
+syn region markdownIdDeclaration matchgroup=markdownLinkDelimiter start="^ \{0,3\}!\=\[" end="\]:" oneline keepend nextgroup=markdownUrl skipwhite
+syn match markdownUrl "\S\+" nextgroup=markdownUrlTitle skipwhite contained
+syn region markdownUrl matchgroup=markdownUrlDelimiter start="<" end=">" oneline keepend nextgroup=markdownUrlTitle skipwhite contained
+syn region markdownUrlTitle matchgroup=markdownUrlTitleDelimiter start=+"+ end=+"+ keepend contained
+syn region markdownUrlTitle matchgroup=markdownUrlTitleDelimiter start=+'+ end=+'+ keepend contained
+syn region markdownUrlTitle matchgroup=markdownUrlTitleDelimiter start=+(+ end=+)+ keepend contained
+
+syn region markdownLinkText matchgroup=markdownLinkTextDelimiter start="!\=\[\%(\_[^]]*]\%( \=[[(]\)\)\@=" end="\]\%( \=[[(]\)\@=" keepend nextgroup=markdownLink,markdownId skipwhite contains=@markdownInline,markdownLineStart
+syn region markdownLink matchgroup=markdownLinkDelimiter start="(" end=")" contains=markdownUrl keepend contained
+syn region markdownId matchgroup=markdownIdDelimiter start="\[" end="\]" keepend contained
+syn region markdownAutomaticLink matchgroup=markdownUrlDelimiter start="<\%(\w\+:\|[[:alnum:]_+-]\+@\)\@=" end=">" keepend oneline
+
+syn region markdownItalic start="\S\@<=\*\|\*\S\@=" end="\S\@<=\*\|\*\S\@=" keepend contains=markdownLineStart
+syn region markdownItalic start="\S\@<=_\|_\S\@=" end="\S\@<=_\|_\S\@=" keepend contains=markdownLineStart
+syn region markdownBold start="\S\@<=\*\*\|\*\*\S\@=" end="\S\@<=\*\*\|\*\*\S\@=" keepend contains=markdownLineStart
+syn region markdownBold start="\S\@<=__\|__\S\@=" end="\S\@<=__\|__\S\@=" keepend contains=markdownLineStart
+syn region markdownBoldItalic start="\S\@<=\*\*\*\|\*\*\*\S\@=" end="\S\@<=\*\*\*\|\*\*\*\S\@=" keepend contains=markdownLineStart
+syn region markdownBoldItalic start="\S\@<=___\|___\S\@=" end="\S\@<=___\|___\S\@=" keepend contains=markdownLineStart
+syn region markdownCode matchgroup=markdownCodeDelimiter start="`" end="`" transparent keepend contains=markdownLineStart
+syn region markdownCode matchgroup=markdownCodeDelimiter start="`` \=" end=" \=``" keepend contains=markdownLineStart
+
+syn match markdownEscape "\\[][\\`*_{}()#+.!-]"
+
+hi def link markdownH1 htmlH1
+hi def link markdownH2 htmlH2
+hi def link markdownH3 htmlH3
+hi def link markdownH4 htmlH4
+hi def link markdownH5 htmlH5
+hi def link markdownH6 htmlH6
+hi def link markdownHeadingRule markdownRule
+hi def link markdownHeadingDelimiter Delimiter
+hi def link markdownOrderedListMarker markdownListMarker
+hi def link markdownListMarker htmlTagName
+hi def link markdownBlockquote Comment
+hi def link markdownRule PreProc
+
+hi def link markdownLinkText htmlLink
+hi def link markdownIdDeclaration Typedef
+hi def link markdownId Type
+hi def link markdownAutomaticLink markdownUrl
+hi def link markdownUrl Float
+hi def link markdownUrlTitle String
+hi def link markdownIdDelimiter markdownLinkDelimiter
+hi def link markdownUrlDelimiter htmlTag
+hi def link markdownUrlTitleDelimiter Delimiter
+
+hi def link markdownItalic htmlItalic
+hi def link markdownBold htmlBold
+hi def link markdownBoldItalic htmlBoldItalic
+hi def link markdownCodeDelimiter Delimiter
+
+hi def link markdownEscape Special
+
+let b:current_syntax = "markdown"
+
+" vim:set sw=2: