revert: "feat(treesitter): add foldtext with treesitter highlighting"

This reverts commit 9ce1623 in favor of #20750.

1 files changed, 0 insertions, 93 deletions

diff --git a/runtime/lua/vim/treesitter/_fold.lua b/runtime/lua/vim/treesitter/_fold.lua
index 735627d29f..d96cc966de 100644
--- a/runtime/lua/vim/treesitter/_fold.lua
+++ b/runtime/lua/vim/treesitter/_fold.lua
@@ -397,97 +397,4 @@ api.nvim_create_autocmd('OptionSet', {
     end
   end,
 })
-
----@package
----@return { [1]: string, [2]: string[] }[]|string
-function M.foldtext()
-  local foldstart = vim.v.foldstart
-  local bufnr = api.nvim_get_current_buf()
-
-  ---@type boolean, LanguageTree
-  local ok, parser = pcall(ts.get_parser, bufnr)
-  if not ok then
-    return vim.fn.foldtext()
-  end
-
-  local query = ts.query.get(parser:lang(), 'highlights')
-  if not query then
-    return vim.fn.foldtext()
-  end
-
-  local tree = parser:parse({ foldstart - 1, foldstart })[1]
-
-  local line = api.nvim_buf_get_lines(bufnr, foldstart - 1, foldstart, false)[1]
-  if not line then
-    return vim.fn.foldtext()
-  end
-
-  ---@type { [1]: string, [2]: string[], range: { [1]: integer, [2]: integer } }[] | { [1]: string, [2]: string[] }[]
-  local result = {}
-
-  local line_pos = 0
-
-  for id, node, metadata in query:iter_captures(tree:root(), 0, foldstart - 1, foldstart) do
-    local name = query.captures[id]
-    local start_row, start_col, end_row, end_col = node:range()
-
-    local priority = tonumber(metadata.priority or vim.highlight.priorities.treesitter)
-
-    if start_row == foldstart - 1 and end_row == foldstart - 1 then
-      -- check for characters ignored by treesitter
-      if start_col > line_pos then
-        table.insert(result, {
-          line:sub(line_pos + 1, start_col),
-          {},
-          range = { line_pos, start_col },
-        })
-      end
-      line_pos = end_col
-
-      local text = line:sub(start_col + 1, end_col)
-      table.insert(result, { text, { { '@' .. name, priority } }, range = { start_col, end_col } })
-    end
-  end
-
-  local i = 1
-  while i <= #result do
-    -- find first capture that is not in current range and apply highlights on the way
-    local j = i + 1
-    while
-      j <= #result
-      and result[j].range[1] >= result[i].range[1]
-      and result[j].range[2] <= result[i].range[2]
-    do
-      for k, v in ipairs(result[i][2]) do
-        if not vim.tbl_contains(result[j][2], v) then
-          table.insert(result[j][2], k, v)
-        end
-      end
-      j = j + 1
-    end
-
-    -- remove the parent capture if it is split into children
-    if j > i + 1 then
-      table.remove(result, i)
-    else
-      -- highlights need to be sorted by priority, on equal prio, the deeper nested capture (earlier
-      -- in list) should be considered higher prio
-      if #result[i][2] > 1 then
-        table.sort(result[i][2], function(a, b)
-          return a[2] < b[2]
-        end)
-      end
-
-      result[i][2] = vim.tbl_map(function(tbl)
-        return tbl[1]
-      end, result[i][2])
-      result[i] = { result[i][1], result[i][2] }
-
-      i = i + 1
-    end
-  end
-
-  return result
-end
-
 return M