Optimize for horizontal move.

Author: autozimu

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "lldb.sourceLanguages": [
+        "rust"
+    ]
+}

autoload/LanguageClient.vim

@@ -636,15 +636,15 @@ endfunction
 
 let s:last_cursor_line = -1
 function! LanguageClient#handleCursorMoved() abort
-    if &buftype !=# '' || &filetype ==# ''
+    let l:cursor_line = getcurpos()[1]
+    if l:cursor_line == s:last_cursor_line
         return
     endif
+    let s:last_cursor_line = l:cursor_line
 
-    let l:cursor_line = line('.')
-    if l:cursor_line == s:last_cursor_line
+    if &buftype !=# '' || &filetype ==# ''
         return
     endif
-    let s:last_cursor_line = l:cursor_line
 
     try
         call LanguageClient#Notify('languageClient/handleCursorMoved', {