patch 8.0.0453: adding fold marker creates new comment commit https://github.com/vim/vim/commit/025a6b708a9bff54c73fb9c641b980da19e943a9 Author: Bram Moolenaar <Bram@vim.org> Date: Sun Mar 12 20:37:21 2017 +0100 patch 8.0.0453: adding fold marker creates new comment Problem: Adding fold marker creates new comment. Solution: Use an existing comment if possible. (LemonBoy, closes https://github.com/vim/vim/issues/1549)