--- a/hgext/split.py	Sun Oct 06 09:45:02 2019 -0400
+++ b/hgext/split.py	Sun Oct 06 09:48:39 2019 -0400
@@ -40,17 +40,17 @@
 # extensions which SHIP WITH MERCURIAL. Non-mainline extensions should
 # be specifying the version(s) of Mercurial they are tested with, or
 # leave the attribute unspecified.
-testedwith = 'ships-with-hg-core'
+testedwith = b'ships-with-hg-core'
 
 
 @command(
-    'split',
+    b'split',
     [
-        ('r', 'rev', '', _("revision to split"), _('REV')),
-        ('', 'rebase', True, _('rebase descendants after split')),
+        (b'r', b'rev', b'', _(b"revision to split"), _(b'REV')),
+        (b'', b'rebase', True, _(b'rebase descendants after split')),
     ]
     + cmdutil.commitopts2,
-    _('hg split [--no-rebase] [[-r] REV]'),
+    _(b'hg split [--no-rebase] [[-r] REV]'),
     helpcategory=command.CATEGORY_CHANGE_MANAGEMENT,
     helpbasic=True,
 )
@@ -67,21 +67,21 @@
     """
     opts = pycompat.byteskwargs(opts)
     revlist = []
-    if opts.get('rev'):
-        revlist.append(opts.get('rev'))
+    if opts.get(b'rev'):
+        revlist.append(opts.get(b'rev'))
     revlist.extend(revs)
-    with repo.wlock(), repo.lock(), repo.transaction('split') as tr:
-        revs = scmutil.revrange(repo, revlist or ['.'])
+    with repo.wlock(), repo.lock(), repo.transaction(b'split') as tr:
+        revs = scmutil.revrange(repo, revlist or [b'.'])
         if len(revs) > 1:
-            raise error.Abort(_('cannot split multiple revisions'))
+            raise error.Abort(_(b'cannot split multiple revisions'))
 
         rev = revs.first()
         ctx = repo[rev]
         if rev is None or ctx.node() == nullid:
-            ui.status(_('nothing to split\n'))
+            ui.status(_(b'nothing to split\n'))
             return 1
         if ctx.node() is None:
-            raise error.Abort(_('cannot split working directory'))
+            raise error.Abort(_(b'cannot split working directory'))
 
         # rewriteutil.precheck is not very useful here because:
         # 1. null check is done above and it's more friendly to return 1
@@ -92,33 +92,33 @@
         # So only "public" check is useful and it's checked directly here.
         if ctx.phase() == phases.public:
             raise error.Abort(
-                _('cannot split public changeset'),
-                hint=_("see 'hg help phases' for details"),
+                _(b'cannot split public changeset'),
+                hint=_(b"see 'hg help phases' for details"),
             )
 
-        descendants = list(repo.revs('(%d::) - (%d)', rev, rev))
+        descendants = list(repo.revs(b'(%d::) - (%d)', rev, rev))
         alloworphaned = obsolete.isenabled(repo, obsolete.allowunstableopt)
-        if opts.get('rebase'):
+        if opts.get(b'rebase'):
             # Skip obsoleted descendants and their descendants so the rebase
             # won't cause conflicts for sure.
             torebase = list(
                 repo.revs(
-                    '%ld - (%ld & obsolete())::', descendants, descendants
+                    b'%ld - (%ld & obsolete())::', descendants, descendants
                 )
             )
             if not alloworphaned and len(torebase) != len(descendants):
                 raise error.Abort(
-                    _('split would leave orphaned changesets ' 'behind')
+                    _(b'split would leave orphaned changesets ' b'behind')
                 )
         else:
             if not alloworphaned and descendants:
                 raise error.Abort(
-                    _('cannot split changeset with children without rebase')
+                    _(b'cannot split changeset with children without rebase')
                 )
             torebase = ()
 
         if len(ctx.parents()) > 1:
-            raise error.Abort(_('cannot split a merge changeset'))
+            raise error.Abort(_(b'cannot split a merge changeset'))
 
         cmdutil.bailifchanged(repo)
 
@@ -127,7 +127,7 @@
         if bname and repo._bookmarks[bname] != ctx.node():
             bookmarks.deactivate(repo)
 
-        wnode = repo['.'].node()
+        wnode = repo[b'.'].node()
         top = None
         try:
             top = dosplit(ui, repo, tr, ctx, opts)
@@ -158,37 +158,37 @@
     while incomplete(repo):
         if committed:
             header = _(
-                'HG: Splitting %s. So far it has been split into:\n'
+                b'HG: Splitting %s. So far it has been split into:\n'
             ) % short(ctx.node())
             for c in committed:
-                firstline = c.description().split('\n', 1)[0]
-                header += _('HG: - %s: %s\n') % (short(c.node()), firstline)
+                firstline = c.description().split(b'\n', 1)[0]
+                header += _(b'HG: - %s: %s\n') % (short(c.node()), firstline)
             header += _(
-                'HG: Write commit message for the next split ' 'changeset.\n'
+                b'HG: Write commit message for the next split ' b'changeset.\n'
             )
         else:
             header = _(
-                'HG: Splitting %s. Write commit message for the '
-                'first split changeset.\n'
+                b'HG: Splitting %s. Write commit message for the '
+                b'first split changeset.\n'
             ) % short(ctx.node())
         opts.update(
             {
-                'edit': True,
-                'interactive': True,
-                'message': header + ctx.description(),
+                b'edit': True,
+                b'interactive': True,
+                b'message': header + ctx.description(),
             }
         )
         commands.commit(ui, repo, **pycompat.strkwargs(opts))
-        newctx = repo['.']
+        newctx = repo[b'.']
         committed.append(newctx)
 
     if not committed:
-        raise error.Abort(_('cannot split an empty revision'))
+        raise error.Abort(_(b'cannot split an empty revision'))
 
     scmutil.cleanupnodes(
         repo,
         {ctx.node(): [c.node() for c in committed]},
-        operation='split',
+        operation=b'split',
         fixphase=True,
     )
 
@@ -199,6 +199,6 @@
     rebase.rebase(
         ui,
         repo,
-        rev=[revsetlang.formatspec('%ld', src)],
-        dest=revsetlang.formatspec('%d', destctx.rev()),
+        rev=[revsetlang.formatspec(b'%ld', src)],
+        dest=revsetlang.formatspec(b'%d', destctx.rev()),
     )