py3: slice over bytes to prevent getting ascii values

Differential Revision: https://phab.mercurial-scm.org/D3792

hgext/transplant.py

@@ -523,7 +523,8 b' def browserevs(ui, repo, nodes, opts):'
         displayer.show(repo[node])
         action = None
         while not action:
-            action = 'ynmpcq?'[ui.promptchoice(prompt)]
+            choice = ui.promptchoice(prompt)
+            action = 'ynmpcq?'[choice:choice + 1]
             if action == '?':
                 for c, t in ui.extractchoices(prompt)[1]:
                     ui.write('%s: %s\n' % (c, t))

mercurial/subrepo.py

@@ -1695,7 +1695,7 b' class gitsubrepo(abstractsubrepo):'
             tab = line.find('\t')
             if tab == -1:
                 continue
-            status, f = line[tab - 1], line[tab + 1:]
+            status, f = line[tab - 1:tab], line[tab + 1:]
             if status == 'M':
                 modified.append(f)
             elif status == 'A':