Drop support for Vim version <9.0.0430

README.md

@@ -1,12 +1,18 @@
 # base64.vim
 
 This is a Vim9 plugin that provides Base64 encoding and decoding commands and
-functions. Neovim and earlier Vim are not supported.
+functions.
 
-You can use `gb` / `gB` to encode / decode strings in a buffer.
+You can use `gb`/`gB` to encode/decode strings in a buffer.
 
 See the [help doc](doc/base64.txt) for more information.
 
+
+## Prerequisites
+
+This plugin requires Vim version \>=9.0.0430. Neovim and earlier Vim are
+not supported.
+
 ## License
 
 [Vim License](https://www.gnu.org/licenses/vim-license.txt)

autoload/base64.vim

@@ -84,7 +84,7 @@ enddef
 def Str2Blob(input: list<string>): blob
   return input
     ->mapnew((_, line) =>
-      (has('patch-9.0.0430') ? repeat(0z00, len(line)) : repeat([0], len(line))->list2blob())
+      repeat(0z00, len(line))
         ->map((i: number, _): number => char2nr(strpart(line, i, 1)))
         ->map((_, v) => v == 0x0A ? 0x00 : v))
     ->reduce((acc, val) => acc + 0z0A + val)