fix(treesitter): update folds in all relevant windows (#24230)

Problem: When using treesitter foldexpr,
* :diffput/get open diff folds, and
* folds are not updated in other windows that contain the updated
  buffer.

Solution: Update folds in all windows that contain the updated buffer
and use expr foldmethod.

1 files changed, 0 insertions, 81 deletions

diff --git a/test/functional/treesitter/parser_spec.lua b/test/functional/treesitter/parser_spec.lua
index 7cfe5b69de..ae26b92f52 100644
--- a/test/functional/treesitter/parser_spec.lua
+++ b/test/functional/treesitter/parser_spec.lua
@@ -885,87 +885,6 @@ int x = INT_MAX;
     end)
   end)
 
-  it("can fold via foldexpr", function()
-    insert(test_text)
-
-    local function get_fold_levels()
-      return exec_lua([[
-        local res = {}
-        for i = 1, vim.api.nvim_buf_line_count(0) do
-          res[i] = vim.treesitter.foldexpr(i)
-        end
-        return res
-      ]])
-    end
-
-    exec_lua([[vim.treesitter.get_parser(0, "c")]])
-
-    eq({
-      [1] = '>1',
-      [2] = '1',
-      [3] = '1',
-      [4] = '1',
-      [5] = '>2',
-      [6] = '2',
-      [7] = '2',
-      [8] = '1',
-      [9] = '1',
-      [10] = '>2',
-      [11] = '2',
-      [12] = '2',
-      [13] = '2',
-      [14] = '2',
-      [15] = '>3',
-      [16] = '3',
-      [17] = '3',
-      [18] = '2',
-      [19] = '1' }, get_fold_levels())
-
-    helpers.command('1,2d')
-
-    eq({
-      [1] = '0',
-      [2] = '0',
-      [3] = '>1',
-      [4] = '1',
-      [5] = '1',
-      [6] = '0',
-      [7] = '0',
-      [8] = '>1',
-      [9] = '1',
-      [10] = '1',
-      [11] = '1',
-      [12] = '1',
-      [13] = '>2',
-      [14] = '2',
-      [15] = '2',
-      [16] = '1',
-      [17] = '0' }, get_fold_levels())
-
-    helpers.command('1put!')
-
-    eq({
-      [1] = '>1',
-      [2] = '1',
-      [3] = '1',
-      [4] = '1',
-      [5] = '>2',
-      [6] = '2',
-      [7] = '2',
-      [8] = '1',
-      [9] = '1',
-      [10] = '>2',
-      [11] = '2',
-      [12] = '2',
-      [13] = '2',
-      [14] = '2',
-      [15] = '>3',
-      [16] = '3',
-      [17] = '3',
-      [18] = '2',
-      [19] = '1' }, get_fold_levels())
-  end)
-
   it('tracks the root range properly (#22911)', function()
     insert([[
       int main() {