"query" param overwrite.

Close #23.

Author: autozimu

plugin/LanguageClient.vim

@@ -267,6 +267,9 @@ endfunction
 let g:LanguageClient_workspaceSymbolResults = []
 function! LanguageClient_workspace_symbol(...) abort
     let l:params = {
+                \ 'buftype': &buftype,
+                \ 'languageId': &filetype,
+                \ 'query': '',
                 \ 'handle': v:true,
                 \ }
     call extend(l:params, a:0 >= 1 ? a:1 : {})

src/languageclient.rs

@@ -1795,7 +1795,7 @@ impl ILanguageClient for Arc<Mutex<State>> {
             return Ok(Value::Null);
         }
 
-        let query = "".to_owned();
+        let (query,): (String,) = self.gather_args(&[("query", "")], params)?;
         let result = self.call(
             Some(&languageId),
             lsp::request::WorkspaceSymbol::METHOD,