patch 8.1.1188: not all Vim variables require the v: prefix
Problem: Not all Vim variables require the v: prefix.
Solution: When scriptversion is 3 all Vim variables can only be used with
the v: prefix. (Ken Takata, closes #4274)
diff --git a/src/testdir/test_eval_stuff.vim b/src/testdir/test_eval_stuff.vim
index d6aeb6f..cba66b7 100644
--- a/src/testdir/test_eval_stuff.vim
+++ b/src/testdir/test_eval_stuff.vim
@@ -154,6 +154,22 @@
endif
endfunc
+scriptversion 3
+func Test_vvar_scriptversion3()
+ call assert_fails('echo version', 'E121:')
+ call assert_false(exists('version'))
+ let version = 1
+ call assert_equal(1, version)
+endfunc
+
+scriptversion 2
+func Test_vvar_scriptversion2()
+ call assert_true(exists('version'))
+ echo version
+ call assert_fails('let version = 1', 'E46:')
+ call assert_equal(v:version, version)
+endfunc
+
func Test_scriptversion()
call writefile(['scriptversion 9'], 'Xversionscript')
call assert_fails('source Xversionscript', 'E999:')