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Edit File: rmd.vim
" markdown Text with R statements " Language: markdown with R code chunks " Homepage: https://github.com/jalvesaq/R-Vim-runtime " Last Change: Thu Apr 18, 2019 09:17PM " " For highlighting pandoc extensions to markdown like citations and TeX and " many other advanced features like folding of markdown sections, it is " recommended to install the vim-pandoc filetype plugin as well as the " vim-pandoc-syntax filetype plugin from https://github.com/vim-pandoc. if exists("b:current_syntax") finish endif " Configuration if not using pandoc syntax: " Add syntax highlighting of YAML header let g:rmd_syn_hl_yaml = get(g:, 'rmd_syn_hl_yaml', 1) " Add syntax highlighting of citation keys let g:rmd_syn_hl_citations = get(g:, 'rmd_syn_hl_citations', 1) " Highlight the header of the chunk of R code let g:rmd_syn_hl_chunk = get(g:, 'g:rmd_syn_hl_chunk', 0) " Pandoc-syntax has more features, but it is slower. " https://github.com/vim-pandoc/vim-pandoc-syntax let g:pandoc#syntax#codeblocks#embeds#langs = get(g:, 'pandoc#syntax#codeblocks#embeds#langs', ['r']) runtime syntax/pandoc.vim if exists("b:current_syntax") " Fix recognition of R code syn region pandocDelimitedCodeBlock_r start=/^```{r\>.*}$/ end=/^```$/ contained containedin=pandocDelimitedCodeBlock contains=@R syn region rmdrInline matchgroup=rmdInlineDelim start="`r " end="`" contains=@R containedin=pandocLaTeXRegion,yamlFlowString keepend hi def link rmdInlineDelim Delimiter let b:current_syntax = "rmd" finish endif let s:cpo_save = &cpo set cpo&vim " R chunks will not be highlighted by syntax/markdown because their headers " follow a non standard pattern: "```{lang" instead of "^```lang". " Make a copy of g:markdown_fenced_languages to highlight the chunks later: if exists('g:markdown_fenced_languages') if !exists('g:rmd_fenced_languages') let g:rmd_fenced_languages = deepcopy(g:markdown_fenced_languages) let g:markdown_fenced_languages = [] endif else let g:rmd_fenced_languages = ['r'] endif runtime syntax/markdown.vim " Now highlight chunks: for s:type in g:rmd_fenced_languages if s:type =~ '=' let s:ft = substitute(s:type, '.*=', '', '') let s:nm = substitute(s:type, '=.*', '', '') else let s:ft = s:type let s:nm = s:type endif unlet! b:current_syntax exe 'syn include @Rmd'.s:nm.' syntax/'.s:ft.'.vim' if g:rmd_syn_hl_chunk exe 'syn region rmd'.s:nm.'ChunkDelim matchgroup=rmdCodeDelim start="^\s*```\s*{\s*'.s:nm.'\>" matchgroup=rmdCodeDelim end="}$" keepend containedin=rmd'.s:nm.'Chunk contains=@Rmd'.s:nm exe 'syn region rmd'.s:nm.'Chunk start="^\s*```\s*{\s*'.s:nm.'\>.*$" matchgroup=rmdCodeDelim end="^\s*```\ze\s*$" keepend contains=rmd'.s:nm.'ChunkDelim,@Rmd'.s:nm else exe 'syn region rmd'.s:nm.'Chunk matchgroup=rmdCodeDelim start="^\s*```\s*{\s*'.s:nm.'\>.*$" matchgroup=rmdCodeDelim end="^\s*```\ze\s*$" keepend contains=@Rmd'.s:nm endif exe 'syn region rmd'.s:nm.'Inline matchgroup=rmdInlineDelim start="`'.s:nm.' " end="`" contains=@Rmd'.s:nm.' keepend' endfor unlet! s:type hi def link rmdInlineDelim Delimiter hi def link rmdCodeDelim Delimiter " You don't need this if either your markdown/syntax.vim already highlights " the YAML header or you are writing standard markdown if g:rmd_syn_hl_yaml " Minimum highlighting of yaml header syn match rmdYamlFieldTtl /^\s*\zs\w*\ze:/ contained syn match rmdYamlFieldTtl /^\s*-\s*\zs\w*\ze:/ contained syn region yamlFlowString matchgroup=yamlFlowStringDelimiter start='"' skip='\\"' end='"' contains=yamlEscape,rmdrInline contained syn region yamlFlowString matchgroup=yamlFlowStringDelimiter start="'" skip="''" end="'" contains=yamlSingleEscape,rmdrInline contained syn match yamlEscape contained '\\\%([\\"abefnrtv\^0_ NLP\n]\|x\x\x\|u\x\{4}\|U\x\{8}\)' syn match yamlSingleEscape contained "''" syn region pandocYAMLHeader matchgroup=rmdYamlBlockDelim start=/\%(\%^\|\_^\s*\n\)\@<=\_^-\{3}\ze\n.\+/ end=/^\([-.]\)\1\{2}$/ keepend contains=rmdYamlFieldTtl,yamlFlowString hi def link rmdYamlBlockDelim Delimiter hi def link rmdYamlFieldTtl Identifier hi def link yamlFlowString String endif " You don't need this if either your markdown/syntax.vim already highlights " citations or you are writing standard markdown if g:rmd_syn_hl_citations " From vim-pandoc-syntax " parenthetical citations syn match pandocPCite /\^\@<!\[[^\[\]]\{-}-\{0,1}@[[:alnum:]_][[:alnum:]à-öø-ÿÀ-ÖØ-ß_:.#$%&\-+?<>~\/]*.\{-}\]/ contains=pandocEmphasis,pandocStrong,pandocLatex,pandocCiteKey,@Spell,pandocAmpersandEscape display " in-text citations with location syn match pandocICite /@[[:alnum:]_][[:alnum:]à-öø-ÿÀ-ÖØ-ß_:.#$%&\-+?<>~\/]*\s\[.\{-1,}\]/ contains=pandocCiteKey,@Spell display " cite keys syn match pandocCiteKey /\(-\=@[[:alnum:]_][[:alnum:]à-öø-ÿÀ-ÖØ-ß_:.#$%&\-+?<>~\/]*\)/ containedin=pandocPCite,pandocICite contains=@NoSpell display syn match pandocCiteAnchor /[-@]/ contained containedin=pandocCiteKey display syn match pandocCiteLocator /[\[\]]/ contained containedin=pandocPCite,pandocICite hi def link pandocPCite Operator hi def link pandocICite Operator hi def link pandocCiteKey Label hi def link pandocCiteAnchor Operator hi def link pandocCiteLocator Operator endif let b:current_syntax = "rmd" let &cpo = s:cpo_save unlet s:cpo_save " vim: ts=8 sw=2