patch 8.0.1831: sometimes the quickfix title is incorrectly prefixed with ':' commit https://github.com/vim/vim/commit/8b62e31003693fee4b288e7aea49170f032aeef3 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 13 15:29:04 2018 +0200 patch 8.0.1831: sometimes the quickfix title is incorrectly prefixed with ':' Problem: Sometimes the quickfix title is incorrectly prefixed with ':'. Solution: Prepend the colon in another way. (Yegappan Lakshmanan, closes #2905)

--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -10473,7 +10473,7 @@ set_qf_ll_list(
 	}
 
 	if (l != NULL && action && valid_dict && set_errorlist(wp, l, action,
-	    (char_u *)(wp == NULL ? "setqflist()" : "setloclist()"), d) == OK)
+	  (char_u *)(wp == NULL ? ":setqflist()" : ":setloclist()"), d) == OK)
 	    rettv->vval.v_number = 0;
     }
 #endif