commit 9fb7b42935f13b5d3407eb82b151da1e9b4b6048
author Bram Moolenaar <Bram@vim.org> Sat Mar 05 21:13:26 2022 +0000
committer Bram Moolenaar <Bram@vim.org> Sat Mar 05 21:13:26 2022 +0000
tree ee717c21805958cca820cfba8e4d4256e7730fed
parent b2175220dafc28349b275ac7f3080f89cce78a57

patch 8.2.4515: old subsitute syntax is still supported

Problem:    Old subsitute syntax is still supported.
Solution:   Disallow using backslash after ":s" in Vim9 script.

src/testdir/test_substitute.vim

diff --git a/src/testdir/test_substitute.vim b/src/testdir/test_substitute.vim
index 35b6b8a..2622749 100644
--- a/src/testdir/test_substitute.vim
+++ b/src/testdir/test_substitute.vim
@@ -811,6 +811,10 @@
   s\&green&
   call assert_equal('amber green yellow white green', getline(1))
   close!
+
+  call assert_fails('vim9cmd s\/white/', 'E1270:')
+  call assert_fails('vim9cmd s\?white?', 'E1270:')
+  call assert_fails('vim9cmd s\&white&', 'E1270:')
 endfunc
 
 " Test for substitute with the new text longer than the original text