patch 8.1.0550: expression evaluation may repeat an error message commit https://github.com/vim/vim/commit/76a6345433bc2a600689397fb28165a2e5793720 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Nov 28 20:38:37 2018 +0100 patch 8.1.0550: expression evaluation may repeat an error message Problem: Expression evaluation may repeat an error message. (Jason Franklin) Solution: Increment did_emsg and check for the value when giving an error for the echo command.

" Vim Compiler File
" Compiler:	xmlwf
" Maintainer:	Robert Rowsome <rowsome@wam.umd.edu>
" Last Change:	2004 Mar 27

if exists("current_compiler")
  finish
endif
let current_compiler = "xmlwf"

let s:cpo_save = &cpo
set cpo&vim

if exists(":CompilerSet") != 2		" older Vim always used :setlocal
  command -nargs=* CompilerSet setlocal <args>
endif

CompilerSet makeprg=xmlwf\ %

CompilerSet errorformat=%f:%l%c:%m

let &cpo = s:cpo_save
unlet s:cpo_save