Zettelkasten vim-zettel vimwiki pandoc

• MyST Markdown compiler and errorformat
• ZettelInsertNote drops the yaml metadata and the footer. link-citations are lost.
• pandoc --citeproc is not easily reversed.
• Chrismarsh / undo-pandoc-citeproc provides a mechanism but requires creating citations.txt to record the prior state.
• Pandoc cannot add the References section without expanding the citations. Some conversion artifacts require cleanup.

  let g:pandoc#compiler#arguments = "--to=markdown "
        \ .. "--from=markdown-header_attributes"
        \ ..    "+wikilinks_title_after_pipe-task_lists-citations "
        \ .. "--wrap=preserve --standalone --citeproc"
  
  compiler! pandoc
  
  make % -o %
  " --to=markdown escapes @xyz, [@xyz] and tasks [X]
  
  Format
  " Prettier lower cases [X]
  
  function pandoc#unescape_markdown() abort
    " Suppress :he E486.
    " Remove backslash from \[@abc\] and \@abc.
    %substitute/\\\[\(@.\{-1,}\)\\]/[\1]/ge
    %substitute/\\@/@/ge
    " Remove backslash and uppercase \[x\].
    %substitute/\\\[x\\]/[X]/e
    " Prettier lower cases [X]
    call CocAction('format')
    %substitute/\(\[x]\)/\U\1/Ie
  endfunction
  

myst mystmd pandoc markdown

• Journal 2025-06-27 MyST Markdown with mdformat
• MyST Markdown and Pandoc formats differ on explicit header anchors.
  • MyST Cross References Targeting Headers
  • Pandoc Extension header_attributes
• Targets should be unique and not match file base names.

  myst build --site
  
  ⚠️  20230929-1034.md:26 Linking "index-structure-or-hub-notes" to an implicit heading reference, best practice is to create an explicit reference.
  ⚠️  CRDA_notes.md:54 No target for internal reference "#20250528-1430" was found.
  

  " Make #ref unique.
  let b:uniq = rand()
  %s/\(#\d\{8\}-\d\{4\}\)/\=submatch(1) .. "-" .. b:uniq/
  
  " Convert ATX header attribute to MyST anchor.
  %s/\(^#\{1,\}\s.\{1,\}\)\s{#\(.\{1,\}\)}/(\2)=\r\1/
  

  (index-structure-or-hub-notes)=
  
  ## Index, Structure or Hub Notes
  
  MyST format.
  
  ## Index, Structure or Hub Notes {#index-structure-or-hub-notes}
  
  Pandoc format.
  
  ## Internal Reference
  
  [NEDO-10527](#20250528-1430-1051592359).
  
  (#20250528-1430-1051592359)=
  
  ## NEDO-10527 {#20250528-1430-1051592359}
  
  Target.