patch 8.2.2497: no error when using more than one character for a register Commit: https://github.com/vim/vim/commit/418a29f0ffcaa0a3d778724ab6d1111db525d3cc Author: Bram Moolenaar <Bram@vim.org> Date: Wed Feb 10 22:23:41 2021 +0100 patch 8.2.2497: no error when using more than one character for a register Problem: No error when using more than one character for a register name. Solution: In Vim9 script check for a single character string. (closes https://github.com/vim/vim/issues/7814) Fix that VAR_BOOL and VAR_SPECIAL are not considered equal.

--- a/src/errors.h
+++ b/src/errors.h
@@ -359,3 +359,5 @@ EXTERN char e_cannot_use_default_for_var
 	INIT(= N_("E1160: Cannot use a default for variable arguments"));
 EXTERN char e_cannot_json_encode_str[]
 	INIT(= N_("E1161: Cannot json encode a %s"));
+EXTERN char e_register_name_must_be_one_char_str[]
+	INIT(= N_("E1162: Register name must be one character: %s"));