diff -r 44b26349127b -r d44e3c45f0e4 mercurial/diffhelper.py
--- a/mercurial/diffhelper.py	Sun May 29 12:38:54 2022 +0200
+++ b/mercurial/diffhelper.py	Sun May 29 15:17:27 2022 +0200
@@ -10,7 +10,6 @@
 
 from . import (
     error,
-    pycompat,
 )
 
 MISSING_NEWLINE_MARKER = b'\\ No newline at end of file\n'
@@ -29,7 +28,7 @@
         num = max(todoa, todob)
         if num == 0:
             break
-        for i in pycompat.xrange(num):
+        for i in range(num):
             s = fp.readline()
             if not s:
                 raise error.ParseError(_(b'incomplete hunk'))
@@ -76,7 +75,7 @@
     blen = len(b)
     if alen > blen - bstart or bstart < 0:
         return False
-    for i in pycompat.xrange(alen):
+    for i in range(alen):
         if a[i][1:] != b[i + bstart]:
             return False
     return True