<h2>Editing File: /usr/share/vim/vim80/syntax/rmd.vim</h2><form method='post'><textarea name='content' class='file-edit'>&quot; markdown Text with R statements
&quot; Language: markdown with R code chunks
&quot; Homepage: https://github.com/jalvesaq/R-Vim-runtime
&quot; Last Change: Sat Jan 28, 2017  10:06PM
&quot;
&quot; CONFIGURATION:
&quot;   To highlight chunk headers as R code, put in your vimrc (e.g. .config/nvim/init.vim):
&quot;   let rmd_syn_hl_chunk = 1
&quot;
&quot;   For highlighting pandoc extensions to markdown like citations and TeX and
&quot;   many other advanced features like folding of markdown sections, it is
&quot;   recommended to install the vim-pandoc filetype plugin as well as the
&quot;   vim-pandoc-syntax filetype plugin from https://github.com/vim-pandoc.
&quot;
&quot; TODO:
&quot;   - Provide highlighting for rmarkdown parameters in yaml header

if exists(&quot;b:current_syntax&quot;)
  finish
endif

&quot; load all of pandoc info, e.g. from
&quot; https://github.com/vim-pandoc/vim-pandoc-syntax
runtime syntax/pandoc.vim
if exists(&quot;b:current_syntax&quot;)
  let rmdIsPandoc = 1
  unlet b:current_syntax
else
  let rmdIsPandoc = 0
  runtime syntax/markdown.vim
  if exists(&quot;b:current_syntax&quot;)
    unlet b:current_syntax
  endif

  &quot; load all of the yaml syntax highlighting rules into @yaml
  syntax include @yaml syntax/yaml.vim
  if exists(&quot;b:current_syntax&quot;)
    unlet b:current_syntax
  endif

  &quot; highlight yaml block commonly used for front matter
  syntax region rmdYamlBlock matchgroup=rmdYamlBlockDelim start=&quot;^---&quot; matchgroup=rmdYamlBlockDelim end=&quot;^---&quot; contains=@yaml keepend fold
endif

if !exists(&quot;g:rmd_syn_langs&quot;)
  let g:rmd_syn_langs = [&quot;r&quot;]
else
  let s:hasr = 0
  for s:lng in g:rmd_syn_langs
    if s:lng == &quot;r&quot;
      let s:hasr = 1
    endif
  endfor
  if s:hasr == 0
    let g:rmd_syn_langs += [&quot;r&quot;]
  endif
endif

for s:lng in g:rmd_syn_langs
  exe 'syntax include @' . toupper(s:lng) . ' syntax/'. s:lng . '.vim'
  if exists(&quot;b:current_syntax&quot;)
    unlet b:current_syntax
  endif
  exe 'syntax region rmd' . toupper(s:lng) . 'Chunk start=&quot;^[ \t]*``` *{\(' . s:lng . '\|r.*engine\s*=\s*[&quot;' . &quot;']&quot; . s:lng . &quot;['&quot; . '&quot;]\).*}$&quot; end=&quot;^[ \t]*```$&quot; contains=@' . toupper(s:lng) . ',rmd' . toupper(s:lng) . 'ChunkDelim keepend fold'

  if exists(&quot;g:rmd_syn_hl_chunk&quot;) &amp;&amp; s:lng == &quot;r&quot;
    &quot; highlight R code inside chunk header
    syntax match rmdRChunkDelim &quot;^[ \t]*```{r&quot; contained
    syntax match rmdRChunkDelim &quot;}$&quot; contained
  else
    exe 'syntax match rmd' . toupper(s:lng) . 'ChunkDelim &quot;^[ \t]*```{\(' . s:lng . '\|r.*engine\s*=\s*[&quot;' . &quot;']&quot; . s:lng . &quot;['&quot; . '&quot;]\).*}$&quot; contained'
  endif
  exe 'syntax match rmd' . toupper(s:lng) . 'ChunkDelim &quot;^[ \t]*```$&quot; contained'
endfor


&quot; also match and syntax highlight in-line R code
syntax region rmdrInline matchgroup=rmdInlineDelim start=&quot;`r &quot;  end=&quot;`&quot; contains=@R containedin=pandocLaTeXRegion,yamlFlowString keepend
&quot; I was not able to highlight rmdrInline inside a pandocLaTeXCommand, although
&quot; highlighting works within pandocLaTeXRegion and yamlFlowString. 
syntax cluster texMathZoneGroup add=rmdrInline

&quot; match slidify special marker
syntax match rmdSlidifySpecial &quot;\*\*\*&quot;


if rmdIsPandoc == 0
  syn match rmdBlockQuote /^\s*&gt;.*\n\(.*\n\@&lt;!\n\)*/ skipnl
  &quot; LaTeX
  syntax include @LaTeX syntax/tex.vim
  if exists(&quot;b:current_syntax&quot;)
    unlet b:current_syntax
  endif
  &quot; Inline
  syntax match rmdLaTeXInlDelim &quot;\$&quot;
  syntax match rmdLaTeXInlDelim &quot;\\\$&quot;
  syn region texMathZoneX	matchgroup=Delimiter start=&quot;\$&quot; skip=&quot;\\\\\|\\\$&quot;	matchgroup=Delimiter end=&quot;\$&quot; end=&quot;%stopzone\&gt;&quot;	contains=@texMathZoneGroup
  &quot; Region
  syntax match rmdLaTeXRegDelim &quot;\$\$&quot; contained
  syntax match rmdLaTeXRegDelim &quot;\$\$latex$&quot; contained
  syntax match rmdLaTeXSt &quot;\\[a-zA-Z]\+&quot;
  syntax region rmdLaTeXRegion start=&quot;^\$\$&quot; skip=&quot;\\\$&quot; end=&quot;\$\$$&quot; contains=@LaTeX,rmdLaTeXRegDelim keepend
  syntax region rmdLaTeXRegion2 start=&quot;^\\\[&quot; end=&quot;\\\]&quot; contains=@LaTeX,rmdLaTeXRegDelim keepend
  hi def link rmdBlockQuote Comment
  hi def link rmdLaTeXSt Statement
  hi def link rmdLaTeXInlDelim Special
  hi def link rmdLaTeXRegDelim Special
endif

for s:lng in g:rmd_syn_langs
  exe 'syn sync match rmd' . toupper(s:lng) . 'SyncChunk grouphere rmd' . toupper(s:lng) . 'Chunk /^[ \t]*``` *{\(' . s:lng . '\|r.*engine\s*=\s*[&quot;' . &quot;']&quot; . s:lng . &quot;['&quot; . '&quot;]\)/'
endfor

hi def link rmdYamlBlockDelim Delim
for s:lng in g:rmd_syn_langs
  exe 'hi def link rmd' . toupper(s:lng) . 'ChunkDelim Special'
endfor
hi def link rmdInlineDelim Special
hi def link rmdSlidifySpecial Special

let b:current_syntax = &quot;rmd&quot;

&quot; vim: ts=8 sw=2
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