⚡ batch (sadly)

.vim/after/syntax/markdown.vim

@@ -1,3 +1,37 @@
+vim9script
+
 unlet b:current_syntax
 syntax include @Yaml syntax/yaml.vim
 syntax region yamlFrontmatter start=/\%^---$/ end=/^---$/ keepend contains=@Yaml
+
+# MarkdownLinkConceal ----------------------------------------------------{{{1
+execute
+    \ 'syntax region markdownLink matchgroup=markdownLinkDelimiter ' ..
+    \ 'start="(" end=")" contains=markdownUrl keepend contained conceal'
+execute
+    \ 'syntax region markdownLinkText matchgroup=markdownLinkTextDelimiter ' ..
+    \ 'start="!\=\[\%(\_[^][]*\%(\[\_[^][]*\]\_[^][]*\)*]\%([[(]\)\)\@=" ' ..
+    \ 'end="\]\%([[(]\)\@=" nextgroup=markdownLink,markdownId skipwhite ' ..
+    \ 'contains=@markdownInline,markdownLineStart concealends'
+
+# Checkbox Syntax Fix ----------------------------------------------------{{{1
+# Correct the checkbox syntax highlighting issue from
+# fix: https://github.com/tpope/vim-markdown/issues/212
+
+# Allow user to customize checkbox symbols, default: [ ] [.] [o] [O] [x] [X] [-]
+g:markdown_checkbox_symbols = get(g:, 'markdown_checkbox_symbols', ' .oOxX-')
+
+# Build regex pattern for list item + checkbox
+var list_pat = '\%(\d\+\.\|[aAiI]\.\|[*+-]\)'
+var checkbox_chars = escape(g:markdown_checkbox_symbols, '^-[]')
+var checkbox_pat = '^\s*' .. list_pat .. '\s*\[[' .. checkbox_chars .. ']\]'
+
+# Define checkbox syntax group
+execute('syn match markdownTodo "' .. checkbox_pat .. '" contains=markdownTodoDone')
+
+# Match the symbol inside the checkbox
+execute('syn match markdownTodoDone "[' .. checkbox_chars .. ']" containedin=markdownTodo contained')
+
+# Optional: highlight style (comment out to use theme default)
+hi def link markdownTodo         markdownListMarker
+hi def link markdownTodoDone     markdownBold