patch 9.0.1883: Vim9: Calling an interface method using a child object fails Commit: https://github.com/vim/vim/commit/cc0bcf4c9f4133750f5ee99c685ba995a1b840fd Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Fri Sep 8 19:12:03 2023 +0200 patch 9.0.1883: Vim9: Calling an interface method using a child object fails Problem: Vim9: Calling an interface method using a child object fails Solution: Search methods of parent class When a class implementing an interface is extended by another class and a child class instance is passed to a function that accepts the interface, calling an interface method doesn't work properly. closes: #13053 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>

" Test Ex := command.

func Test_ex_equal()
  new
  call setline(1, ["foo\tbar", "bar\tfoo"])

  let a = execute('=')
  call assert_equal("\n2", a)

  let a = execute('=#')
  call assert_equal("\n2\n  1 foo     bar", a)

  let a = execute('=l')
  call assert_equal("\n2\nfoo^Ibar$", a)

  let a = execute('=p')
  call assert_equal("\n2\nfoo     bar", a)

  let a = execute('=l#')
  call assert_equal("\n2\n  1 foo^Ibar$", a)

  let a = execute('=p#')
  call assert_equal("\n2\n  1 foo     bar", a)

  let a = execute('.=')
  call assert_equal("\n1", a)

  call assert_fails('3=', 'E16:')
  call assert_fails('=x', 'E488:')

  bwipe!
endfunc

" vim: shiftwidth=2 sts=2 expandtab