patch 8.1.1639: changing an autoload name into a file name is inefficient commit https://github.com/vim/vim/commit/28fc247f8d94a1cfabbcf2691ca942bde96f6d2f Author: Bram Moolenaar <Bram@vim.org> Date: Fri Jul 5 22:14:16 2019 +0200 patch 8.1.1639: changing an autoload name into a file name is inefficient Problem: Changing an autoload name into a script file name is inefficient. Solution: Remember the last replaced #. (Ozaki Kiichi, closes https://github.com/vim/vim/issues/4618)

" Vim filetype plugin file
" Previous Maintainer:  Nikolai Weibull <now@bitwi.se>
" Latest Revision:      2007-12-04

if exists("b:did_ftplugin")
  finish
endif
let b:did_ftplugin = 1

let s:cpo_save = &cpo
set cpo&vim

let b:undo_ftplugin = "setl com< cms< fo<"

setlocal comments=:# commentstring=#\ %s formatoptions-=t formatoptions+=croql

let &cpo = s:cpo_save
unlet s:cpo_save