diff --git a/runtime/syntax/testdir/input/vim_ex_comment-vim9.vim b/runtime/syntax/testdir/input/vim9_comment.vim
similarity index 69%
rename from runtime/syntax/testdir/input/vim_ex_comment-vim9.vim
rename to runtime/syntax/testdir/input/vim9_comment.vim
index 786d11b..fd6a5d2 100644
--- a/runtime/syntax/testdir/input/vim_ex_comment-vim9.vim
+++ b/runtime/syntax/testdir/input/vim9_comment.vim
@@ -28,6 +28,29 @@
 }
 
 
+# Multiline comments
+
+# comment
+  \ continuing comment
+  \ continuing comment
+
+# :Foo
+      \ arg1
+      #\ comment
+      \ arg2
+
+echo "TOP"
+
+
+# Line-continuation comments
+
+:Foo
+      #\ line continuation comment
+      \ arg1
+      #\ line continuation comment
+      \ arg2
+
+
 # Issue: #13047
 
 if !exists(":DiffOrig")
diff --git a/runtime/syntax/testdir/input/vim_ex_comment.vim b/runtime/syntax/testdir/input/vim_comment.vim
similarity index 69%
rename from runtime/syntax/testdir/input/vim_ex_comment.vim
rename to runtime/syntax/testdir/input/vim_comment.vim
index 54e514e..f382f8d 100644
--- a/runtime/syntax/testdir/input/vim_ex_comment.vim
+++ b/runtime/syntax/testdir/input/vim_comment.vim
@@ -25,6 +25,29 @@
 }
 
 
+" Multiline comments
+
+" comment
+  \ continuing comment
+  \ continuing comment
+
+" :Foo
+      \ arg1
+      "\ comment
+      \ arg2
+
+echo "TOP"
+
+
+" Line-continuation comments
+
+:Foo
+      "\ line continuation comment
+      \ arg1
+      "\ line continuation comment
+      \ arg2
+
+
 " Issue: #13047
 
 if !exists(":DiffOrig")