patch 8.0.1777: cannot cleanup before loading another colorscheme commit https://github.com/vim/vim/commit/60a68362aa73f4a6cb534688978f9dc2b16e60fe Author: Bram Moolenaar <Bram@vim.org> Date: Mon Apr 30 15:40:48 2018 +0200 patch 8.0.1777: cannot cleanup before loading another colorscheme Problem: Cannot cleanup before loading another colorscheme. Solution: Add the ColorSchemePre autocommand event.

--- a/src/syntax.c
+++ b/src/syntax.c
@@ -7224,6 +7224,8 @@ load_colors(char_u *name)
     buf = alloc((unsigned)(STRLEN(name) + 12));
     if (buf != NULL)
     {
+	apply_autocmds(EVENT_COLORSCHEMEPRE, name,
+					       curbuf->b_fname, FALSE, curbuf);
 	sprintf((char *)buf, "colors/%s.vim", name);
 	retval = source_runtime(buf, DIP_START + DIP_OPT);
 	vim_free(buf);