patch 9.0.1830: Vim9: crash when accessing a null object Commit: https://github.com/vim/vim/commit/d7085a06358c22250a27186bb7d52112ed4addd1 Author: Gianmaria Bajo <mg1979.git@gmail.com> Date: Thu Aug 31 18:15:26 2023 +0200 patch 9.0.1830: Vim9: crash when accessing a null object Problem: Vim9: crash when accessing a null object Solution: Check accessing a NULL object in def function An object is NULL when the variable is declared, but the constructor isn't called. Accessing/setting a member on the object crashed Vim. Note: this happens inside def functions, at script level things work differently. Accessing a NULL object member results in E1360 (correctly), while setting a value on it results in E1012 (type mismatch) so there's still something to fix. closes: #12973 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Gianmaria Bajo <mg1979.git@gmail.com>

" Vim indent file
" Language: ssh config file
" Maintainer: JasonKim <git@jasonk.me>
" Last Change: 2020 May 16

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

setlocal autoindent
setlocal indentexpr=GetSshconfigIndent(v:lnum)
setlocal indentkeys=o,O,*<Return>,0=~host\ ,0=~match\ ,0#,!^F

let b:undo_indent = "setlocal autoindent< indentexpr< indentkeys<"

if exists("*GetSshconfigIndent")
  finish
endif

function GetSshconfigIndent(lnum)
  let sw = shiftwidth()
  let prev_lnum = prevnonblank(a:lnum - 1)
  let curr_lnum = a:lnum
  let prev_line = getline(prev_lnum)
  let curr_line = getline(curr_lnum)
  if curr_line =~? '^\s*\(host\|match\)\s'
    return 0
  elseif prev_line =~? '^\s*\(host\|match\)\s'
    return sw
  else
    return indent(prev_lnum)
  endif
endfunction