patch 8.2.1426: Vim9: cannot call autoload function in :def function Commit: https://github.com/vim/vim/commit/a177344dc0c337e5b272c1c59d13964a8318bcfa Author: Bram Moolenaar <Bram@vim.org> Date: Wed Aug 12 15:21:22 2020 +0200 patch 8.2.1426: Vim9: cannot call autoload function in :def function Problem: Vim9: cannot call autoload function in :def function. Solution: Load the autoload script. (closes https://github.com/vim/vim/issues/6690)

--- a/src/scriptfile.c
+++ b/src/scriptfile.c
@@ -1991,7 +1991,7 @@ autoload_name(char_u *name)
     if (scriptname == NULL)
 	return NULL;
     STRCPY(scriptname, "autoload/");
-    STRCAT(scriptname, name);
+    STRCAT(scriptname, name[0] == 'g' && name[1] == ':' ? name + 2: name);
     for (p = scriptname + 9; (p = vim_strchr(p, AUTOLOAD_CHAR)) != NULL;
 								    q = p, ++p)
 	*p = '/';