Prefer matchit.vim to % if available

Author: rhysd

autoload/rust.vim

@@ -499,7 +499,15 @@ function! s:SearchTestFunctionNameUnderCursor() abort
 
     " Search the end of test function (closing brace) to ensure that the
     " cursor position is within function definition
-    normal! %
+    if maparg('<Plug>(MatchitNormalForward)') ==# ''
+        normal! %
+    else
+        " Prefer matchit.vim official plugin to native % since the plugin
+        " provides better behavior than original % (#391)
+        " To load the plugin, run:
+        "   :packadd matchit
+        execute 'normal' "\<Plug>(MatchitNormalForward)"
+    endif
     if line('.') < cursor_line
         return ''
     endif