patch 8.1.1910: redrawing too much when toggling 'relativenumber' Commit: https://github.com/vim/vim/commit/448262176b382c63bd2faa9a1354670a4eede36b Author: Bram Moolenaar <Bram@vim.org> Date: Thu Aug 22 21:23:20 2019 +0200 patch 8.1.1910: redrawing too much when toggling 'relativenumber' Problem: Redrawing too much when toggling 'relativenumber'. Solution: Only clear when 'signcolumn' is set to "number". (Yegappan Lakshmanan, closes #4852)