Feat: switch markdown syntax file

3 files changed, 193 insertions, 88 deletions

diff --git a/README.md b/README.md
index c81a3cb..8c34ae7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,12 @@
-Rhatto's VIM dotfiles
-=====================
+# Rhatto's VIM dotfiles
+
+## About
 
 This is the repository for rhatto's VIM configuration.
 More information at https://git.fluxo.info/metadot
+
+## Radar
+
+Some interesting modules to consider:
+
+* [GitHub - preservim/vim-markdown: Markdown Vim Mode](https://github.com/preservim/vim-markdown)
diff --git a/vim.dot.link/syntax/markdown.vim b/vim.dot.link/syntax/markdown.vim
new file mode 100644
index 0000000..96bfbc9
--- /dev/null
+++ b/vim.dot.link/syntax/markdown.vim
@@ -0,0 +1,184 @@
+" Vim syntax file
+" Language:	Markdown
+" Maintainer:	Ben Williams <benw@plasticboy.com>
+" URL:		http://plasticboy.com/markdown-vim-mode/
+" Remark:	Uses HTML syntax file
+" TODO: 	Handle stuff contained within stuff (e.g. headings within blockquotes)
+
+
+" Read the HTML syntax to start with
+if v:version < 600
+  so <sfile>:p:h/html.vim
+else
+  runtime! syntax/html.vim
+
+  if exists('b:current_syntax')
+    unlet b:current_syntax
+  endif
+endif
+
+if v:version < 600
+  syntax clear
+elseif exists('b:current_syntax')
+  finish
+endif
+
+" don't use standard HiLink, it will not work with included syntax files
+if v:version < 508
+  command! -nargs=+ HtmlHiLink hi link <args>
+else
+  command! -nargs=+ HtmlHiLink hi def link <args>
+endif
+
+syn spell toplevel
+syn case ignore
+syn sync linebreaks=1
+
+let s:conceal = ''
+let s:concealends = ''
+let s:concealcode = ''
+if has('conceal') && get(g:, 'vim_markdown_conceal', 1)
+  let s:conceal = ' conceal'
+  let s:concealends = ' concealends'
+endif
+if has('conceal') && get(g:, 'vim_markdown_conceal_code_blocks', 1)
+  let s:concealcode = ' concealends'
+endif
+
+" additions to HTML groups
+if get(g:, 'vim_markdown_emphasis_multiline', 1)
+    let s:oneline = ''
+else
+    let s:oneline = ' oneline'
+endif
+syn region mkdItalic matchgroup=mkdItalic start="\%(\*\|_\)"    end="\%(\*\|_\)"
+syn region mkdBold matchgroup=mkdBold start="\%(\*\*\|__\)"    end="\%(\*\*\|__\)"
+syn region mkdBoldItalic matchgroup=mkdBoldItalic start="\%(\*\*\*\|___\)"    end="\%(\*\*\*\|___\)"
+execute 'syn region htmlItalic matchgroup=mkdItalic start="\%(^\|\s\)\zs\*\ze[^\\\*\t ]\%(\%([^*]\|\\\*\|\n\)*[^\\\*\t ]\)\?\*\_W" end="[^\\\*\t ]\zs\*\ze\_W" keepend contains=@Spell' . s:oneline . s:concealends
+execute 'syn region htmlItalic matchgroup=mkdItalic start="\%(^\|\s\)\zs_\ze[^\\_\t ]" end="[^\\_\t ]\zs_\ze\_W" keepend contains=@Spell' . s:oneline . s:concealends
+execute 'syn region htmlBold matchgroup=mkdBold start="\%(^\|\s\)\zs\*\*\ze\S" end="\S\zs\*\*" keepend contains=@Spell' . s:oneline . s:concealends
+execute 'syn region htmlBold matchgroup=mkdBold start="\%(^\|\s\)\zs__\ze\S" end="\S\zs__" keepend contains=@Spell' . s:oneline . s:concealends
+execute 'syn region htmlBoldItalic matchgroup=mkdBoldItalic start="\%(^\|\s\)\zs\*\*\*\ze\S" end="\S\zs\*\*\*" keepend contains=@Spell' . s:oneline . s:concealends
+execute 'syn region htmlBoldItalic matchgroup=mkdBoldItalic start="\%(^\|\s\)\zs___\ze\S" end="\S\zs___" keepend contains=@Spell' . s:oneline . s:concealends
+
+" [link](URL) | [link][id] | [link][] | ![image](URL)
+syn region mkdFootnotes matchgroup=mkdDelimiter start="\[^"    end="\]"
+execute 'syn region mkdID matchgroup=mkdDelimiter    start="\["    end="\]" contained oneline' . s:conceal
+execute 'syn region mkdURL matchgroup=mkdDelimiter   start="("     end=")"  contained oneline' . s:conceal
+execute 'syn region mkdLink matchgroup=mkdDelimiter  start="\\\@<!!\?\[\ze[^]\n]*\n\?[^]\n]*\][[(]" end="\]" contains=@mkdNonListItem,@Spell nextgroup=mkdURL,mkdID skipwhite' . s:concealends
+
+" Autolink without angle brackets.
+" mkd  inline links:      protocol     optional  user:pass@  sub/domain                    .com, .co.uk, etc         optional port   path/querystring/hash fragment
+"                         ------------ _____________________ ----------------------------- _________________________ ----------------- __
+syn match   mkdInlineURL /https\?:\/\/\(\w\+\(:\w\+\)\?@\)\?\([A-Za-z0-9][-_0-9A-Za-z]*\.\)\{1,}\(\w\{2,}\.\?\)\{1,}\(:[0-9]\{1,5}\)\?[^] \t]*/
+
+" Autolink with parenthesis.
+syn region  mkdInlineURL matchgroup=mkdDelimiter start="(\(https\?:\/\/\(\w\+\(:\w\+\)\?@\)\?\([A-Za-z0-9][-_0-9A-Za-z]*\.\)\{1,}\(\w\{2,}\.\?\)\{1,}\(:[0-9]\{1,5}\)\?[^] \t]*)\)\@=" end=")"
+
+" Autolink with angle brackets.
+syn region mkdInlineURL matchgroup=mkdDelimiter start="\\\@<!<\ze[a-z][a-z0-9,.-]\{1,22}:\/\/[^> ]*>" end=">"
+
+" Link definitions: [id]: URL (Optional Title)
+syn region mkdLinkDef matchgroup=mkdDelimiter   start="^ \{,3}\zs\[\^\@!" end="]:" oneline nextgroup=mkdLinkDefTarget skipwhite
+syn region mkdLinkDefTarget start="<\?\zs\S" excludenl end="\ze[>[:space:]\n]"   contained nextgroup=mkdLinkTitle,mkdLinkDef skipwhite skipnl oneline
+syn region mkdLinkTitle matchgroup=mkdDelimiter start=+"+     end=+"+  contained
+syn region mkdLinkTitle matchgroup=mkdDelimiter start=+'+     end=+'+  contained
+syn region mkdLinkTitle matchgroup=mkdDelimiter start=+(+     end=+)+  contained
+
+"HTML headings
+syn region htmlH1       matchgroup=mkdHeading     start="^\s*#"                   end="$" contains=mkdLink,mkdInlineURL,@Spell
+syn region htmlH2       matchgroup=mkdHeading     start="^\s*##"                  end="$" contains=mkdLink,mkdInlineURL,@Spell
+syn region htmlH3       matchgroup=mkdHeading     start="^\s*###"                 end="$" contains=mkdLink,mkdInlineURL,@Spell
+syn region htmlH4       matchgroup=mkdHeading     start="^\s*####"                end="$" contains=mkdLink,mkdInlineURL,@Spell
+syn region htmlH5       matchgroup=mkdHeading     start="^\s*#####"               end="$" contains=mkdLink,mkdInlineURL,@Spell
+syn region htmlH6       matchgroup=mkdHeading     start="^\s*######"              end="$" contains=mkdLink,mkdInlineURL,@Spell
+syn match  htmlH1       /^.\+\n=\+$/ contains=mkdLink,mkdInlineURL,@Spell
+syn match  htmlH2       /^.\+\n-\+$/ contains=mkdLink,mkdInlineURL,@Spell
+
+"define Markdown groups
+syn match  mkdLineBreak    /  \+$/
+syn region mkdBlockquote   start=/^\s*>/                   end=/$/ contains=mkdLink,mkdInlineURL,mkdLineBreak,@Spell
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!`/                     end=/`/'  . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!``/ skip=/[^`]`[^`]/   end=/``/' . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/^\s*\z(`\{3,}\)[^`]*$/                       end=/^\s*\z1`*\s*$/'            . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/\(\([^\\]\|^\)\\\)\@<!\~\~/  end=/\(\([^\\]\|^\)\\\)\@<!\~\~/'               . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start=/^\s*\z(\~\{3,}\)\s*[0-9A-Za-z_+-]*\s*$/      end=/^\s*\z1\~*\s*$/'           . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start="<pre\(\|\_s[^>]*\)\\\@<!>"                   end="</pre>"'                   . s:concealcode
+execute 'syn region mkdCode matchgroup=mkdCodeDelimiter start="<code\(\|\_s[^>]*\)\\\@<!>"                  end="</code>"'                  . s:concealcode
+syn region mkdFootnote     start="\[^"                     end="\]"
+syn match  mkdCode         /^\s*\n\(\(\s\{8,}[^ ]\|\t\t\+[^\t]\).*\n\)\+/
+syn match  mkdCode         /\%^\(\(\s\{4,}[^ ]\|\t\+[^\t]\).*\n\)\+/
+syn match  mkdCode         /^\s*\n\(\(\s\{4,}[^ ]\|\t\+[^\t]\).*\n\)\+/ contained
+syn match  mkdListItem     /^\s*\%([-*+]\|\d\+\.\)\ze\s\+/ contained
+syn region mkdListItemLine start="^\s*\%([-*+]\|\d\+\.\)\s\+" end="$" oneline contains=@mkdNonListItem,mkdListItem,@Spell
+syn region mkdNonListItemBlock start="\(\%^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@!\|\n\(\_^\_$\|\s\{4,}[^ ]\|\t+[^\t]\)\@!\)" end="^\(\s*\([-*+]\|\d\+\.\)\s\+\)\@=" contains=@mkdNonListItem,@Spell
+syn match  mkdRule         /^\s*\*\s\{0,1}\*\s\{0,1}\*\(\*\|\s\)*$/
+syn match  mkdRule         /^\s*-\s\{0,1}-\s\{0,1}-\(-\|\s\)*$/
+syn match  mkdRule         /^\s*_\s\{0,1}_\s\{0,1}_\(_\|\s\)*$/
+
+" YAML frontmatter
+if get(g:, 'vim_markdown_frontmatter', 0)
+  syn include @yamlTop syntax/yaml.vim
+  syn region Comment matchgroup=mkdDelimiter start="\%^---$" end="^\(---\|\.\.\.\)$" contains=@yamlTop keepend
+  unlet! b:current_syntax
+endif
+
+if get(g:, 'vim_markdown_toml_frontmatter', 0)
+  try
+    syn include @tomlTop syntax/toml.vim
+    syn region Comment matchgroup=mkdDelimiter start="\%^+++$" end="^+++$" transparent contains=@tomlTop keepend
+    unlet! b:current_syntax
+  catch /E484/
+    syn region Comment matchgroup=mkdDelimiter start="\%^+++$" end="^+++$"
+  endtry
+endif
+
+if get(g:, 'vim_markdown_json_frontmatter', 0)
+  try
+    syn include @jsonTop syntax/json.vim
+    syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$" contains=@jsonTop keepend
+    unlet! b:current_syntax
+  catch /E484/
+    syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$"
+  endtry
+endif
+
+if get(g:, 'vim_markdown_math', 0)
+  syn include @tex syntax/tex.vim
+  syn region mkdMath start="\\\@<!\$" end="\$" skip="\\\$" contains=@tex keepend
+  syn region mkdMath start="\\\@<!\$\$" end="\$\$" skip="\\\$" contains=@tex keepend
+endif
+
+" Strike through
+if get(g:, 'vim_markdown_strikethrough', 0)
+    execute 'syn region mkdStrike matchgroup=htmlStrike start="\%(\~\~\)" end="\%(\~\~\)"' . s:concealends
+    HtmlHiLink mkdStrike        htmlStrike
+endif
+
+syn cluster mkdNonListItem contains=@htmlTop,htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdInlineURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6,mkdMath,mkdStrike
+
+"highlighting for Markdown groups
+HtmlHiLink mkdString        String
+HtmlHiLink mkdCode          String
+HtmlHiLink mkdCodeDelimiter String
+HtmlHiLink mkdCodeStart     String
+HtmlHiLink mkdCodeEnd       String
+HtmlHiLink mkdFootnote      Comment
+HtmlHiLink mkdBlockquote    Comment
+HtmlHiLink mkdListItem      Identifier
+HtmlHiLink mkdRule          Identifier
+HtmlHiLink mkdLineBreak     Visual
+HtmlHiLink mkdFootnotes     htmlLink
+HtmlHiLink mkdLink          htmlLink
+HtmlHiLink mkdURL           htmlString
+HtmlHiLink mkdInlineURL     htmlLink
+HtmlHiLink mkdID            Identifier
+HtmlHiLink mkdLinkDef       mkdID
+HtmlHiLink mkdLinkDefTarget mkdURL
+HtmlHiLink mkdLinkTitle     htmlString
+HtmlHiLink mkdDelimiter     Delimiter
+
+let b:current_syntax = 'mkd'
+
+delcommand HtmlHiLink
+" vim: ts=8
diff --git a/vim.dot.link/syntax/mkd.vim b/vim.dot.link/syntax/mkd.vim
deleted file mode 100644
index 6c23415..0000000
--- a/vim.dot.link/syntax/mkd.vim
+++ /dev/null
@@ -1,86 +0,0 @@
-" Vim syntax file
-" Language:	Markdown
-" Maintainer:	Ben Williams <benw@plasticboy.com>
-" URL:		http://plasticboy.com/markdown-vim-mode/
-" Version:	8
-" Last Change:  2008 April 29 
-" Remark:	Uses HTML syntax file
-" Remark:	I don't do anything with angle brackets (<>) because that would too easily
-"		easily conflict with HTML syntax
-" TODO: 	Do something appropriate with image syntax
-" TODO: 	Handle stuff contained within stuff (e.g. headings within blockquotes)
-
-
-" Read the HTML syntax to start with
-if version < 600
-  so <sfile>:p:h/html.vim
-else
-  runtime! syntax/html.vim
-  unlet b:current_syntax
-endif
-
-if version < 600
-  syntax clear
-elseif exists("b:current_syntax")
-  finish
-endif
-
-" don't use standard HiLink, it will not work with included syntax files
-if version < 508
-  command! -nargs=+ HtmlHiLink hi link <args>
-else
-  command! -nargs=+ HtmlHiLink hi def link <args>
-endif
-
-syn spell toplevel
-syn case ignore
-syn sync linebreaks=1
-
-"additions to HTML groups
-syn region htmlBold     start=/\(^\|\s\)\*\@<!\*\*\*\@!/     end=/\*\@<!\*\*\*\@!\($\|\s\)/   contains=@Spell,htmlItalic
-syn region htmlItalic   start=/\(^\|\s\)\*\@<!\*\*\@!/       end=/\*\@<!\*\*\@!\($\|\s\)/      contains=htmlBold,@Spell
-syn region htmlBold     start=/\(^\|\s\)_\@<!___\@!/         end=/_\@<!___\@!\($\|\s\)/       contains=htmlItalic,@Spell
-syn region htmlItalic   start=/\(^\|\s\)_\@<!__\@!/          end=/_\@<!__\@!\($\|\s\)/        contains=htmlBold,@Spell
-syn region htmlString   start="]("ms=s+2             end=")"me=e-1
-syn region htmlLink     start="\["ms=s+1            end="\]"me=e-1 contains=@Spell
-syn region htmlString   start="\(\[.*]: *\)\@<=.*"  end="$"
-
-"define Markdown groups
-syn match  mkdLineContinue ".$" contained
-syn match  mkdRule      /^\s*\*\s\{0,1}\*\s\{0,1}\*$/
-syn match  mkdRule      /^\s*-\s\{0,1}-\s\{0,1}-$/
-syn match  mkdRule      /^\s*_\s\{0,1}_\s\{0,1}_$/
-syn match  mkdRule      /^\s*-\{3,}$/
-syn match  mkdRule      /^\s*\*\{3,5}$/
-syn match  mkdListItem  "^\s*[-*+]\s\+"
-syn match  mkdListItem  "^\s*\d\+\.\s\+"
-syn match  mkdCode      /^\s*\n\(\(\s\{4,}\|[\t]\+\)[^*-+ ].*\n\)\+/
-syn region mkdCode      start=/`/                   end=/`/
-syn region mkdCode      start=/\s*``[^`]*/          end=/[^`]*``\s*/
-syn region mkdBlockquote start=/^\s*>/              end=/$/                 contains=mkdLineContinue,@Spell
-syn region mkdCode      start="<pre[^>]*>"         end="</pre>"
-syn region mkdCode      start="<code[^>]*>"        end="</code>"
-
-"HTML headings
-syn region htmlH1       start="^\s*#"                   end="\($\|#\+\)" contains=@Spell
-syn region htmlH2       start="^\s*##"                  end="\($\|#\+\)" contains=@Spell
-syn region htmlH3       start="^\s*###"                 end="\($\|#\+\)" contains=@Spell
-syn region htmlH4       start="^\s*####"                end="\($\|#\+\)" contains=@Spell
-syn region htmlH5       start="^\s*#####"               end="\($\|#\+\)" contains=@Spell
-syn region htmlH6       start="^\s*######"              end="\($\|#\+\)" contains=@Spell
-syn match  htmlH1       /^.\+\n=\+$/ contains=@Spell
-syn match  htmlH2       /^.\+\n-\+$/ contains=@Spell
-
-"highlighting for Markdown groups
-HtmlHiLink mkdString	    String
-HtmlHiLink mkdCode          String
-HtmlHiLink mkdBlockquote    Comment
-HtmlHiLink mkdLineContinue  Comment
-HtmlHiLink mkdListItem      Identifier
-HtmlHiLink mkdRule          Identifier
-
-
-let b:current_syntax = "mkd"
-
-delcommand HtmlHiLink
-" vim: ts=8