patch 8.1.0747: map() with a bad expression doesn't give an error commit https://github.com/vim/vim/commit/ce9d50df07402cb8e196537a9c4505845adecabc Author: Bram Moolenaar <Bram@vim.org> Date: Mon Jan 14 22:22:29 2019 +0100 patch 8.1.0747: map() with a bad expression doesn't give an error Problem: map() with a bad expression doesn't give an error. (Ingo Karkat) Solution: Check for giving an error message. (closes https://github.com/vim/vim/issues/3800)

" Vim indent file
" Language:	Ch
" Maintainer:	SoftIntegration, Inc. <info@softintegration.com>
" URL:		http://www.softintegration.com/download/vim/indent/ch.vim
" Last change:	2006 Apr 30
"		Created based on cpp.vim
"
" Ch is a C/C++ interpreter with many high level extensions


" Only load this indent file when no other was loaded.
if exists("b:did_indent")
   finish
endif
let b:did_indent = 1

" Ch indenting is built-in, thus this is very simple
setlocal cindent