neovim/runtime/indent/xf86conf.vim

" Vim indent file
" Language:		XFree86 Configuration File
" Maintainer:		Doug Kearns <dougkearns@gmail.com>
" Previous Maintainer:	Nikolai Weibull <now@bitwi.se>
" Last Change:		2022 April 25

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

setlocal indentexpr=GetXF86ConfIndent()
setlocal indentkeys=!^F,o,O,=End
setlocal nosmartindent

let b:undo_indent = "setl inde< indk< si<"

if exists("*GetXF86ConfIndent")
  finish
endif

function GetXF86ConfIndent()
  let lnum = prevnonblank(v:lnum - 1)

  if lnum == 0
    return 0
  endif

  let ind = indent(lnum)

  if getline(lnum) =~? '^\s*\(Sub\)\=Section\>'
    let ind = ind + shiftwidth()
  endif

  if getline(v:lnum) =~? '^\s*End\(Sub\)\=Section\>'
    let ind = ind - shiftwidth()
  endif

  return ind
endfunction