patch 8.2.1356: Vim9: cannot get the percent register
Problem: Vim9: cannot get the percent register.
Solution: Check for readable registers instead of writable. (closes #6566)
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index 226db83..ef8797f 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1430,6 +1430,15 @@
def Test_expr7_register()
@a = 'register a'
assert_equal('register a', @a)
+
+ let fname = expand('%')
+ assert_equal(fname, @%)
+
+ feedkeys(":echo 'some'\<CR>", "xt")
+ assert_equal("echo 'some'", @:)
+
+ normal axyz
+ assert_equal("xyz", @.)
enddef
def Test_expr7_namespace()