Available Capfs
cape-abbrev: Complete abbreviation (add-global-abbrev,add-mode-abbrev).cape-dabbrev: Complete word from current buffers. See alsodabbrev-capf.cape-dict: Complete word from dictionary file.cape-elisp-block: Complete Elisp in Org or Markdown code block.cape-elisp-symbol: Complete Elisp symbol.cape-emoji: Complete Emoji.cape-file: Complete file name.cape-history: Complete from Eshell, Comint or minibuffer history.cape-keyword: Complete programming language keyword.cape-line: Complete entire line from current buffer.cape-rfc1345: Complete Unicode char using RFC 1345 mnemonics.cape-sgml: Complete Unicode char from SGML entity, e.g.,&alpha.cape-tex: Complete Unicode char from TeX command, e.g.\hbar.