2 files changed, 35 insertions, 11 deletions
diff --git a/runtime/lua/vim/lsp/buf.lua b/runtime/lua/vim/lsp/buf.lua
index 7a819f3c3d..e1ddfb7efa 100644
--- a/runtime/lua/vim/lsp/buf.lua
+++ b/runtime/lua/vim/lsp/buf.lua
@@ -65,19 +65,18 @@ function M.completion(context)
 end
 
 function M.formatting(options)
-  validate { options = {options, 't', true} }
-  local sts = vim.bo.softtabstop;
-  options = vim.tbl_extend('keep', options or {}, {
-    tabSize = (sts > 0 and sts) or (sts < 0 and vim.bo.shiftwidth) or vim.bo.tabstop;
-    insertSpaces = vim.bo.expandtab;
-  })
-  local params = {
-    textDocument = { uri = vim.uri_from_bufnr(0) };
-    options = options;
-  }
+  local params = util.make_formatting_params(options)
   return request('textDocument/formatting', params)
 end
 
+function M.formatting_sync(options, timeout_ms)
+  local params = util.make_formatting_params(options)
+  local result = vim.lsp.buf_request_sync(0, "textDocument/formatting", params, timeout_ms)
+  if not result then return end
+  result = result[1].result
+  vim.lsp.util.apply_text_edits(result)
+end
+
 function M.range_formatting(options, start_pos, end_pos)
   validate {
     options = {options, 't', true};
@@ -116,7 +115,7 @@ function M.rename(new_name)
   -- TODO(ashkan) use prepareRename
   -- * result: [`Range`](#range) \| `{ range: Range, placeholder: string }` \| `null` describing the range of the string to rename and optionally a placeholder text of the string content to be renamed. If `null` is returned then it is deemed that a 'textDocument/rename' request is not valid at the given position.
   local params = util.make_position_params()
-  new_name = new_name or npcall(vfn.input, "New Name: ")
+  new_name = new_name or npcall(vfn.input, "New Name: ", vfn.expand('<cword>'))
   if not (new_name and #new_name > 0) then return end
   params.newName = new_name
   request('textDocument/rename', params)
diff --git a/runtime/lua/vim/lsp/util.lua b/runtime/lua/vim/lsp/util.lua
index 71ca1048e1..4176255eb6 100644
--- a/runtime/lua/vim/lsp/util.lua
+++ b/runtime/lua/vim/lsp/util.lua
@@ -119,6 +119,7 @@ function M.apply_text_edits(text_edits, bufnr)
   if not api.nvim_buf_is_loaded(bufnr) then
     vim.fn.bufload(bufnr)
   end
+  api.nvim_buf_set_option(bufnr, 'buflisted', true)
   local start_line, finish_line = math.huge, -1
   local cleaned = {}
   for i, e in ipairs(text_edits) do
@@ -1259,6 +1260,30 @@ function M.make_text_document_params()
   return { uri = vim.uri_from_bufnr(0) }
 end
 
+--- Get visual width of tabstop.
+---
+--@see |softtabstop|
+--@param bufnr (optional, number): Buffer handle, defaults to current
+--@returns (number) tabstop visual width
+function M.get_effective_tabstop(bufnr)
+  validate { bufnr = {bufnr, 'n', true} }
+  local bo = bufnr and vim.bo[bufnr] or vim.bo
+  local sts = bo.softtabstop
+  return (sts > 0 and sts) or (sts < 0 and bo.shiftwidth) or bo.tabstop
+end
+
+function M.make_formatting_params(options)
+  validate { options = {options, 't', true} }
+  options = vim.tbl_extend('keep', options or {}, {
+    tabSize = M.get_effective_tabstop();
+    insertSpaces = vim.bo.expandtab;
+  })
+  return {
+    textDocument = { uri = vim.uri_from_bufnr(0) };
+    options = options;
+  }
+end
+
 -- @param buf buffer handle or 0 for current.
 -- @param row 0-indexed line
 -- @param col 0-indexed byte offset in line