Subject: bug#38216: [PATCH] vc-hg: don't pass empty string to 'update' command

From: martin rudalics <[email-masked]>
Date: Fri, 15 Nov 2019 09:59:38 +0100

> Thanks; applied the patch to Emacs 27.

Gets me

../../lisp/vc/vc-hg.el:1467:1:Warning: the function `string-empty-p' is not
     known to be defined.

here.

martin