to create a post file of jekyll

jekyll-post.vim

" Vim global plugin for creating jekyll's post
" Last Change:  2018 Jun 01
" Maintainer:   fourside <fourside@gmail.com>
" License:      This file is placed in the public domain.

if exists("g:loaded_jekyll_post")
  finish
endif
let g:loaded_jekyll_post = 1

let s:save_cpo = &cpo
set cpo&vim

let s:zone_offset = strftime('%z')
if has('win32')
    let s:zone_offset = '+0900'
endif

let s:template = [
            \ "---",
            \ "layout: post",
            \ "title: \"\"",
            \ "date: " . strftime('%Y-%m-%d %H:%M:%S ') . s:zone_offset,
            \ "categories: ",
            \ "---",
            \]

function! s:JekyllPost(...)
    " variable-length args ignores a delimiter when joining
    let title = join(split(join(a:000), " "), "-")
    let filename = strftime('%Y-%m-%d-') . l:title . '.md'
    execute ':edit ' .  filename
    if getfsize(filename) > 0
        return
    endif
    call append(0, s:template)
endfunction

if !exists(":JekyllPost")
  command -nargs=1  JekyllPost  :call s:JekyllPost(<q-args>)
endif


let &cpo = s:save_cpo
unlet s:save_cpo