--- a/mercurial/mdiff.py
+++ b/mercurial/mdiff.py
@@ -47,7 +47,7 @@ def sortdiff(a, b):
la = lb = 0
lena = len(a)
lenb = len(b)
-
+
while 1:
am, bm, = la, lb
@@ -65,14 +65,14 @@ def sortdiff(a, b):
if lb >= lenb:
break
-
+
# skip mismatched lines from a
while la < lena and lb < lenb and b[lb] > a[la]:
la += 1
if la >= lena:
break
-
+
yield (lena, lenb, 0)
def diff(a, b, sorted=0):
@@ -100,7 +100,7 @@ def diff(a, b, sorted=0):
bin.append(struct.pack(">lll", p[la], p[am], len(s)) + s)
la = am + size
lb = bm + size
-
+
return "".join(bin)
def patchtext(bin):