patch 9.0.1627: no generic mechanism to test syntax plugins Commit: https://github.com/vim/vim/commit/46acad7284cba7842b5e505fa3d07e99806d246f Author: Bram Moolenaar <Bram@vim.org> Date: Sun Jun 11 19:04:18 2023 +0100 patch 9.0.1627: no generic mechanism to test syntax plugins Problem: No generic mechanism to test syntax plugins. Solution: Add a syntax plugin test mechanism, using screendumps. Add a simple test for "c".

" Vim filetype plugin
" Language:        Jsonnet
" Maintainer:      Cezary Drożak <cezary@drozak.net>
" URL:             https://github.com/google/vim-jsonnet
" Last Change:     2022-09-08

" Only do this when not done yet for this buffer
if exists("b:did_ftplugin")
  finish
endif

" Don't load another plugin for this buffer
let b:did_ftplugin = 1

setlocal commentstring=//\ %s

let b:undo_ftplugin = "setlocal commentstring<"