Here’s a small Ultisnips snippet for creating a TOML front matter header for Hugo
snippet post "blog post"
+++
author = "Raghu Rajagopalan"
date = "`!v strftime("%FT%H:%M:%S").strftime("%z")[:2].":" . strftime("%z")[3:]`"
publishdate = "`!v strftime("%FT%H:%M:%S").strftime("%z")[:2].":" . strftime("%z")[3:]`"
tags = ["easyblogger", "blogging"]
title = "${1:title}"
lastmod = "`!v strftime("%FT%H:%M:%S").strftime("%z")[:2].":" . strftime("%z")[3:]`"
+++
$0
endsnippetTo update the last modified date on save, put this little autocmd in your .vimrc
augroup AsciiDoc
au!
autocmd FileType asciidoc au BufWritePre <buffer>
\ :silent 1,20s/^lastmod\s*=\s*".*"/\="lastmod = \"". strftime("%FT%H:%M:%S").strftime("%z")[:2]. ":".strftime("%z")[3:]."\""/e
augroup END