patch 9.1.0360: Vim9: does not handle autoloaded variables well
Problem: Vim9: does not handle autoloaded variables well
Solution: Better handle script-level exported variable references from
autoload files (Ernie Rael).
fixes: #14591
closes: #14607
Signed-off-by: Ernie Rael <errael@raelity.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_vim9_import.vim b/src/testdir/test_vim9_import.vim
index 78383ee..cfab50d 100644
--- a/src/testdir/test_vim9_import.vim
+++ b/src/testdir/test_vim9_import.vim
@@ -1201,6 +1201,71 @@
:bw!
enddef
+" Test modifying exported autoload variable. Github issue: #14591
+def Test_autoload_export_variables()
+ mkdir('Xautoload_vars/autoload', 'pR')
+ var lines =<< trim END
+ vim9script
+ export var val = 11
+ val = 42
+ END
+
+ # Test that the imported script, above, can modify the exported variable;
+ # and test that the importing script, below, can modify the variable.
+ writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f2.vim', 'D')
+ lines =<< trim END
+ vim9script
+
+ import autoload './Xautoload_vars/autoload/Xauto_vars_f2.vim' as f2
+
+ def F(): number
+ return f2.val
+ enddef
+ assert_equal(42, F())
+ assert_equal(42, f2.val)
+ f2.val = 17
+ assert_equal(17, f2.val)
+
+ def G()
+ f2.val = 19
+ enddef
+ G()
+ assert_equal(19, f2.val)
+ END
+ v9.CheckScriptSuccess(lines)
+
+ # Test const var is not modifiable.
+ lines =<< trim END
+ vim9script
+ export const val = 11
+ val = 42
+ END
+ writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f3.vim', 'D')
+ lines =<< trim END
+ vim9script
+
+ import autoload './Xautoload_vars/autoload/Xauto_vars_f3.vim' as f3
+
+ var x = f3.val
+ END
+ v9.CheckScriptFailure(lines, 'E46:')
+
+ # Test const var is not modifiable from importing script.
+ lines =<< trim END
+ vim9script
+ export const val = 11
+ END
+ writefile(lines, 'Xautoload_vars/autoload/Xauto_vars_f4.vim', 'D')
+ lines =<< trim END
+ vim9script
+
+ import autoload './Xautoload_vars/autoload/Xauto_vars_f4.vim' as f4
+
+ f4.val = 13
+ END
+ v9.CheckScriptFailure(lines, 'E46:')
+enddef
+
def Test_autoload_import_relative_autoload_dir()
mkdir('autoload', 'pR')
var lines =<< trim END