index: replace insert(-1, e) method by append(e) method I want to make index[len(index) - 1] be the tip revision, not null revision as it is today. insert(-1, e) will then make little sense. Since insert() currently requires the first argument to be -1, it seems simpler to replace it by a method that allows insertion only at the end. Note that revlogoldindex already has this method (by virtue of extending list). Differential Revision: https://phab.mercurial-scm.org/D4021

--- a/mercurial/revlog.py	Fri Jul 20 14:25:59 2018 -0700
+++ b/mercurial/revlog.py	Wed Aug 01 10:57:14 2018 -0700
@@ -2549,7 +2549,7 @@
 
         e = (offset_type(offset, flags), l, textlen,
              base, link, p1r, p2r, node)
-        self.index.insert(-1, e)
+        self.index.append(e)
         self.nodemap[node] = curr
 
         entry = self._io.packentry(e, self.node, self.version, curr)