patch 8.2.1524: no longer get an error for string concatenation with float Commit: https://github.com/vim/vim/commit/2e0866128b6266829a7f38733d5188bc4ec68745 Author: Bram Moolenaar <Bram@vim.org> Date: Tue Aug 25 22:37:48 2020 +0200 patch 8.2.1524: no longer get an error for string concatenation with float Problem: No longer get an error for string concatenation with float. (Tsuyoshi Cho) Solution: Only convert float for Vim9 script. (closes #6787)

--- a/src/testdir/test_eval_stuff.vim
+++ b/src/testdir/test_eval_stuff.vim
@@ -135,6 +135,12 @@ func Test_string_concatenation()
   let a = 'a'
   let a..=b
   call assert_equal('ab', a)
+
+  if has('float')
+    let a = 'A'
+    let b = 1.234
+    call assert_fails('echo a .. b', 'E806:')
+  endif
 endfunc
 
 " Test fix for issue #4507