patch 9.0.0457: substitute prompt does not highlight an empty match Commit: https://github.com/vim/vim/commit/a04f457a6c071179bac4088c9314007d39d5c5e0 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Sep 13 13:45:26 2022 +0100 patch 9.0.0457: substitute prompt does not highlight an empty match Problem: Substitute prompt does not highlight an empty match. Solution: Highlight at least one character.

" Vim compiler file
" Compiler:	Unit testing tool for Python
" Maintainer:	Max Ischenko <mfi@ukr.net>
" Last Change: 2004 Mar 27

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

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

CompilerSet efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m