breaking changes: https://github.com/neovim/neovim/issues/14090, issue #136

lua/navigator/definition.lua

@@ -21,15 +21,16 @@ local definition_hdlr = util.mk_handler(function(err, locations, ctx, _)
   end
 
   local client = vim.lsp.get_client_by_id(ctx.client_id)
+  local oe = require('navigator.util').encoding()
   if vim.tbl_islist(locations) then
     if #locations > 1 then
       local items = locations_to_items(locations)
       gui.new_list_view({ items = items, api = 'Definition' })
     else
-      vim.lsp.util.jump_to_location(locations[1], client.offset_encoding)
+      vim.lsp.util.jump_to_location(locations[1], oe)
     end
   else
-    vim.lsp.util.jump_to_location(locations, client.offset_encoding)
+    vim.lsp.util.jump_to_location(locations, oe)
   end
 end)
 

lua/navigator/dochighlight.lua

@@ -154,7 +154,7 @@ local handle_document_highlight = mk_handler(function(_, result, ctx)
   references[ctx.bufnr] = result
   local client_id = ctx.client_id
   local client = vim.lsp.get_client_by_id(client_id)
-  vim.lsp.util.buf_highlight_references(ctx.bufnr, result, client.offset_encoding)
+  vim.lsp.util.buf_highlight_references(ctx.bufnr, result, util.encoding())
 end)
 -- modify from vim-illuminate
 local function goto_adjent_reference(opt)
@@ -248,7 +248,7 @@ local function documentHighlight()
     local client_id = ctx.client_id
     local client = vim.lsp.get_client_by_id(client_id)
     vim.lsp.util.buf_clear_references(bufnr)
-    vim.lsp.util.buf_highlight_references(bufnr, result, client.offset_encoding)
+    vim.lsp.util.buf_highlight_references(bufnr, result, util.encoding())
     table.sort(result, function(a, b)
       return before(a.range, b.range)
     end)

lua/navigator/formatting.lua

@@ -10,7 +10,7 @@ return {
     local util = require('navigator.util')
     local log = util.log
 
-    local offset_encoding = vim.lsp.get_client_by_id(ctx.client_id).offset_encoding
+    local offset_encoding = util.encoding(vim.lsp.get_client_by_id(ctx.client_id))
 
     -- If the buffer hasn't been modified before the formatting has finished,
     -- update the buffer

lua/navigator/lspclient/attach.lua

@@ -1,62 +1,67 @@
 local vim, api = vim, vim.api
-local lsp = require("vim.lsp")
+local lsp = require('vim.lsp')
 
-local util = require "navigator.util"
+local util = require('navigator.util')
 local log = util.log
 local trace = util.trace
 
 local diagnostic_map = function(bufnr)
-  local opts = {noremap = true, silent = true}
+  local opts = { noremap = true, silent = true }
-  api.nvim_buf_set_keymap(bufnr, "n", "]O", ":lua vim.lsp.diagnostic.set_loclist()<CR>", opts)
+  api.nvim_buf_set_keymap(bufnr, 'n', ']O', ':lua vim.lsp.diagnostic.set_loclist()<CR>', opts)
 end
 
 local M = {}
 
 M.on_attach = function(client, bufnr)
+  bufnr = bufnr or 0
+
+  if bufnr == 0 then
+    log('no bufnr provided')
+  end
   local uri = vim.uri_from_bufnr(bufnr)
 
-  if uri == "file://" or uri == "file:///" or #uri < 11 then
+  if uri == 'file://' or uri == 'file:///' or #uri < 11 then
-    log("skip for float buffer", uri)
+    log('skip for float buffer', uri)
-    return {error = "invalid file", result = nil}
+    return { error = 'invalid file', result = nil }
   end
 
-  log("attaching: ", bufnr, client.name, uri)
+  log('attaching: ', bufnr, client.name, uri)
 
   trace(client)
 
   diagnostic_map(bufnr)
   -- add highlight for Lspxxx
-  require"navigator.lspclient.highlight".add_highlight()
+  require('navigator.lspclient.highlight').add_highlight()
-  require"navigator.lspclient.highlight".diagnositc_config_sign()
+  require('navigator.lspclient.highlight').diagnositc_config_sign()
-  api.nvim_buf_set_option(bufnr, "omnifunc", "v:lua.vim.lsp.omnifunc")
+  api.nvim_buf_set_option(bufnr, 'omnifunc', 'v:lua.vim.lsp.omnifunc')
 
-  require("navigator.lspclient.mapping").setup({
+  require('navigator.lspclient.mapping').setup({
     client = client,
     bufnr = bufnr,
-    cap = client.resolved_capabilities
+    cap = client.resolved_capabilities,
   })
 
   if client.resolved_capabilities.document_highlight then
-    require("navigator.dochighlight").documentHighlight()
+    require('navigator.dochighlight').documentHighlight()
   end
 
-  require"navigator.lspclient.lspkind".init()
+  require('navigator.lspclient.lspkind').init()
 
-  local config = require"navigator".config_values()
+  local config = require('navigator').config_values()
-  trace(client.name, "navigator on attach")
+  trace(client.name, 'navigator on attach')
   if config.on_attach ~= nil then
-    log(client.name, "customized attach for all clients")
+    log(client.name, 'customized attach for all clients')
     config.on_attach(client, bufnr)
   end
   if config.lsp and config.lsp[client.name] and config.lsp[client.name].on_attach ~= nil then
-    log("lsp client specific attach for", client.name)
+    log('lsp client specific attach for', client.name)
     config.lsp[client.name].on_attach(client, bufnr)
   end
 
   if _NgConfigValues.lsp.code_action.enable then
     if client.resolved_capabilities.code_action then
       log('code action enabled for client', client.resolved_capabilities.code_action)
-      vim.cmd [[autocmd CursorHold,CursorHoldI <buffer> lua require'navigator.codeAction'.code_action_prompt()]]
+      vim.cmd([[autocmd CursorHold,CursorHoldI <buffer> lua require'navigator.codeAction'.code_action_prompt()]])
     end
   end
 end

lua/navigator/util.lua

@@ -402,6 +402,17 @@ function M.empty(t)
   return next(t) == nil
 end
 
+function M.encoding(client)
+  local oe = client.offset_encoding
+  if oe == nil then
+    return 'utf-8'
+  end
+  if type(oe) == 'table' then
+    oe = oe[1] or 'utf-8'
+  end
+  return oe
+end
+
 -- alternatively: use  vim.notify("namespace does not exist or is anonymous", vim.log.levels.ERROR)
 
 function M.warn(msg)