patch 8.1.1775: error message may be empty in filetype test commit https://github.com/vim/vim/commit/eee9f65b2a213e9031f172d9d3b22adad6cb985d Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jul 29 21:14:42 2019 +0200 patch 8.1.1775: error message may be empty in filetype test Problem: Error message may be empty in filetype test. Solution: Use v:exception instead. (Daniel Hahler, closs https://github.com/vim/vim/issues/4744)

" Vim indent file
" Language: Scheme
" Last Change: 2018 Jan 31
" Maintainer: Evan Hanson <evhan@foldling.org>
" Previous Maintainer: Sergey Khorev <sergey.khorev@gmail.com>
" URL: https://foldling.org/vim/indent/scheme.vim

" Only load this indent file when no other was loaded.
if exists("b:did_indent")
  finish
endif

" Use the Lisp indenting
runtime! indent/lisp.vim