Revert publishDiagnostics workaround and fixed representation of empt…

…y object.

Empty tables are sent as JSON arrays, not objects.

init.lua

@@ -369,13 +369,13 @@ function Server.new(lang, root, cmd, init_options)
  -- prepareSupportDefaultBehavior = 1,
  -- honorsChangeAnnotations = true
  -- },
- publishDiagnostics = {
- relatedInformation = false -- some buggy language servers expect this key
-  -- tagSupport = {valueSet = {}},
-  -- versionSupport = true,
-  -- codeDescriptionSupport = true,
-  -- dataSupport = true
- }
+ publishDiagnostics = empty_object -- {
+ -- relatedInformation = true
+ -- tagSupport = {valueSet = {}},
+ -- versionSupport = true,
+ -- codeDescriptionSupport = true,
+ -- dataSupport = true
+ -- },
  -- foldingRange = {
  -- dynamicRegistration = false, -- not supported
  -- rangeLimit = ?,