From 47eb5350dfb410b94fd3e6bd89b87fdf99f749b9 Mon Sep 17 00:00:00 2001
From: Tom Willemse <tom@ryuslash.org>
Date: Wed, 7 Jun 2017 00:05:59 -0700
Subject: [PATCH] Add required vc function
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‘vc-p4-revision-granularity’ is a required function that should be
implemented by all vc backends. Perforce has per-file revisions.
---
 vc-p4.el | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/vc-p4.el b/vc-p4.el
index 877d11c..68b7c41 100644
--- a/vc-p4.el
+++ b/vc-p4.el
@@ -99,6 +99,11 @@ specify a starting date when you run C-u C-x v g."
   :type 'string
   :group 'vc)
 
+(defun vc-p4-revision-granularity ()
+  "Return file.
+Perforce has per-file revisions."
+  'file)
+
 (defun vc-p4-create-repo ()
   (error "create-repo not supported yet for P4"))