how to display Title in properties of PDF file instead of file name

(from github.com/rexguns)
as the title, could you show me how to config system to display the Title of PDF file instead of display file name.

I know that, when the search result display html file, they should show the title of html file instead. That’s the meaning result.

(from github.com/marevol)
At the moment, properties info of a file is available with a dynamic field,
but it is not displayed as Title.
To display it as Title, it will be fixed in the next release.