patch 8.0.0655: not easy to make sure a function does not exist commit https://github.com/vim/vim/commit/d6abcd154cdc6a8dd4b7c6ccad37617ea8a1b4aa Author: Bram Moolenaar <Bram@vim.org> Date: Thu Jun 22 19:15:24 2017 +0200 patch 8.0.0655: not easy to make sure a function does not exist Problem: Not easy to make sure a function does not exist. Solution: Add ! as an optional argument to :delfunc.

" Vim syntax file
" Language:	Haskell supporting c2hs binding hooks
" Maintainer:	Armin Sander <armin@mindwalker.org>
" Last Change:	2001 November 1
"
" 2001 November 1: Changed commands for sourcing haskell.vim

" Enable binding hooks
let b:hs_chs=1

" Include standard Haskell highlighting
runtime! syntax/haskell.vim

" vim: ts=8