mirror of
https://github.com/neovim/neovim.git
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139 lines
6.1 KiB
VimL
139 lines
6.1 KiB
VimL
" markdown Text with R statements
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" Language: markdown with R code chunks
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" Homepage: https://github.com/jalvesaq/R-Vim-runtime
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" Last Change: Wed Apr 21, 2021 09:55AM
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"
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" For highlighting pandoc extensions to markdown like citations and TeX and
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" many other advanced features like folding of markdown sections, it is
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" recommended to install the vim-pandoc filetype plugin as well as the
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" vim-pandoc-syntax filetype plugin from https://github.com/vim-pandoc.
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if exists("b:current_syntax")
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finish
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endif
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" Highlight the header of the chunks as R code
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let g:rmd_syn_hl_chunk = get(g:, 'rmd_syn_hl_chunk', 0)
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" Pandoc-syntax has more features, but it is slower.
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" https://github.com/vim-pandoc/vim-pandoc-syntax
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let g:pandoc#syntax#codeblocks#embeds#langs = get(g:, 'pandoc#syntax#codeblocks#embeds#langs', ['r'])
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runtime syntax/pandoc.vim
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if exists("b:current_syntax")
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" Recognize inline R code
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syn region rmdrInline matchgroup=rmdInlineDelim start="`r " end="`" contains=@R containedin=pandocLaTeXRegion,yamlFlowString keepend
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hi def link rmdInlineDelim Delimiter
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" Fix recognition of language chunks (code adapted from pandoc, 2021-03-28)
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" Knitr requires braces in the block's header
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for s:lng in g:pandoc#syntax#codeblocks#embeds#langs
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let s:nm = matchstr(s:lng, '^[^=]*')
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exe 'syn clear pandocDelimitedCodeBlock_'.s:nm
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exe 'syn clear pandocDelimitedCodeBlockinBlockQuote_'.s:nm
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if g:rmd_syn_hl_chunk
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exe 'syn region rmd'.s:nm.'ChunkDelim matchgroup=rmdCodeDelim start="^\s*```\s*{\s*'.s:nm.'\>" matchgroup=rmdCodeDelim end="}$" keepend containedin=rmd'.s:nm.'Chunk contains=@R'
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exe 'syn region rmd'.s:nm.'Chunk start="^\s*```\s*{\s*'.s:nm.'\>.*$" matchgroup=rmdCodeDelim end="^\s*```\ze\s*$" keepend contains=rmd'.s:nm.'ChunkDelim,@'.toupper(s:nm)
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else
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exe 'syn region rmd'.s:nm.'Chunk matchgroup=rmdCodeDelim start="^\s*```\s*{\s*'.s:nm.'\>.*$" matchgroup=rmdCodeDelim end="^\s*```\ze\s*$" keepend contains=@'.toupper(s:nm)
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endif
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endfor
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unlet s:lng
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unlet s:nm
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hi def link rmdInlineDelim Delimiter
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hi def link rmdCodeDelim Delimiter
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let b:current_syntax = "rmd"
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finish
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endif
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" Configuration if not using pandoc syntax:
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" Add syntax highlighting of YAML header
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let g:rmd_syn_hl_yaml = get(g:, 'rmd_syn_hl_yaml', 1)
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" Add syntax highlighting of citation keys
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let g:rmd_syn_hl_citations = get(g:, 'rmd_syn_hl_citations', 1)
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let s:cpo_save = &cpo
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set cpo&vim
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" R chunks will not be highlighted by syntax/markdown because their headers
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" follow a non standard pattern: "```{lang" instead of "^```lang".
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" Make a copy of g:markdown_fenced_languages to highlight the chunks later:
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if exists('g:markdown_fenced_languages')
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if !exists('g:rmd_fenced_languages')
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let g:rmd_fenced_languages = deepcopy(g:markdown_fenced_languages)
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let g:markdown_fenced_languages = []
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endif
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else
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let g:rmd_fenced_languages = ['r']
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endif
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runtime syntax/markdown.vim
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" Now highlight chunks:
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for s:type in g:rmd_fenced_languages
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if s:type =~ '='
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let s:ft = substitute(s:type, '.*=', '', '')
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let s:nm = substitute(s:type, '=.*', '', '')
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else
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let s:ft = s:type
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let s:nm = s:type
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endif
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unlet! b:current_syntax
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exe 'syn include @Rmd'.s:nm.' syntax/'.s:ft.'.vim'
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if g:rmd_syn_hl_chunk
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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=@Rmdr'
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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
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else
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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
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endif
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endfor
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unlet! s:type
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" Recognize inline R code
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syn region rmdrInline matchgroup=rmdInlineDelim start="`r " end="`" contains=@Rmdr keepend
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hi def link rmdInlineDelim Delimiter
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hi def link rmdCodeDelim Delimiter
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" You don't need this if either your markdown/syntax.vim already highlights
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" the YAML header or you are writing standard markdown
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if g:rmd_syn_hl_yaml
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" Minimum highlighting of yaml header
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syn match rmdYamlFieldTtl /^\s*\zs\w*\ze:/ contained
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syn match rmdYamlFieldTtl /^\s*-\s*\zs\w*\ze:/ contained
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syn region yamlFlowString matchgroup=yamlFlowStringDelimiter start='"' skip='\\"' end='"' contains=yamlEscape,rmdrInline contained
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syn region yamlFlowString matchgroup=yamlFlowStringDelimiter start="'" skip="''" end="'" contains=yamlSingleEscape,rmdrInline contained
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syn match yamlEscape contained '\\\%([\\"abefnrtv\^0_ NLP\n]\|x\x\x\|u\x\{4}\|U\x\{8}\)'
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syn match yamlSingleEscape contained "''"
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syn region pandocYAMLHeader matchgroup=rmdYamlBlockDelim start=/\%(\%^\|\_^\s*\n\)\@<=\_^-\{3}\ze\n.\+/ end=/^\([-.]\)\1\{2}$/ keepend contains=rmdYamlFieldTtl,yamlFlowString
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hi def link rmdYamlBlockDelim Delimiter
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hi def link rmdYamlFieldTtl Identifier
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hi def link yamlFlowString String
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endif
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" You don't need this if either your markdown/syntax.vim already highlights
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" citations or you are writing standard markdown
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if g:rmd_syn_hl_citations
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" From vim-pandoc-syntax
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" parenthetical citations
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syn match pandocPCite /\^\@<!\[[^\[\]]\{-}-\{0,1}@[[:alnum:]_][[:alnum:]à-öø-ÿÀ-ÖØ-ß_:.#$%&\-+?<>~\/]*.\{-}\]/ contains=pandocEmphasis,pandocStrong,pandocLatex,pandocCiteKey,@Spell,pandocAmpersandEscape display
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" in-text citations with location
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syn match pandocICite /@[[:alnum:]_][[:alnum:]à-öø-ÿÀ-ÖØ-ß_:.#$%&\-+?<>~\/]*\s\[.\{-1,}\]/ contains=pandocCiteKey,@Spell display
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" cite keys
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syn match pandocCiteKey /\(-\=@[[:alnum:]_][[:alnum:]à-öø-ÿÀ-ÖØ-ß_:.#$%&\-+?<>~\/]*\)/ containedin=pandocPCite,pandocICite contains=@NoSpell display
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syn match pandocCiteAnchor /[-@]/ contained containedin=pandocCiteKey display
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syn match pandocCiteLocator /[\[\]]/ contained containedin=pandocPCite,pandocICite
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hi def link pandocPCite Operator
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hi def link pandocICite Operator
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hi def link pandocCiteKey Label
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hi def link pandocCiteAnchor Operator
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hi def link pandocCiteLocator Operator
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endif
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let b:current_syntax = "rmd"
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let &cpo = s:cpo_save
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unlet s:cpo_save
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" vim: ts=8 sw=2
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