# HG changeset patch
# User Boris Feld <boris.feld@octobus.net>
# Date 1538407434 -7200
# Node ID d5d28d360a19b9e659128e11b462863453a82c1e
# Parent  25ce80ce84c504af9288229d62a5dd03955f7b32
pref: support negative indexing in perfrevlogrevisions

This is useful to check for a consistent final slice in multiple different repositories.

diff -r 25ce80ce84c5 -r d5d28d360a19 contrib/perf.py
--- a/contrib/perf.py	Mon Oct 01 17:37:38 2018 +0200
+++ b/contrib/perf.py	Mon Oct 01 17:23:54 2018 +0200
@@ -1523,6 +1523,9 @@
     rl = cmdutil.openrevlog(repo, b'perfrevlogrevisions', file_, opts)
     rllen = getlen(ui)(rl)
 
+    if startrev < 0:
+        startrev = rllen + startrev
+
     def d():
         rl.clearcaches()