--- a/hg	Tue Nov 12 10:17:59 2019 -0500
+++ b/hg	Thu Nov 14 20:35:11 2019 -0800
@@ -15,22 +15,29 @@
 
 if libdir != '@' 'LIBDIR' '@':
     if not os.path.isabs(libdir):
-        libdir = os.path.join(os.path.dirname(os.path.realpath(__file__)),
-                              libdir)
+        libdir = os.path.join(
+            os.path.dirname(os.path.realpath(__file__)), libdir
+        )
         libdir = os.path.abspath(libdir)
     sys.path.insert(0, libdir)
 
 from hgdemandimport import tracing
+
 with tracing.log('hg script'):
     # enable importing on demand to reduce startup time
     try:
         if sys.version_info[0] < 3 or sys.version_info >= (3, 6):
-            import hgdemandimport; hgdemandimport.enable()
+            import hgdemandimport
+
+            hgdemandimport.enable()
     except ImportError:
-        sys.stderr.write("abort: couldn't find mercurial libraries in [%s]\n" %
-                         ' '.join(sys.path))
+        sys.stderr.write(
+            "abort: couldn't find mercurial libraries in [%s]\n"
+            % ' '.join(sys.path)
+        )
         sys.stderr.write("(check your install and PYTHONPATH)\n")
         sys.exit(-1)
 
     from mercurial import dispatch
+
     dispatch.run()