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gh-119105: difflib: improve recursion for degenerate cases #119131

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Merged
tim-one merged 10 commits into from
May 19, 2024
Merged

gh-119105: difflib: improve recursion for degenerate cases #119131

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9bb454c
difflib.py: fix recursion branching for degenerate cases
pulkin May 17, 2024
a159954
difflib.py: grammar
pulkin May 17, 2024
81b7dae
difflib.py: weights-free implementation
pulkin May 18, 2024
2184911
difflib.py: rm left-over
pulkin May 18, 2024
f9e3480
difflib.py: even simpler impl
pulkin May 19, 2024
b0be97f
📜🤖 Added by blurb_it.
blurb-it[bot] May 19, 2024
bea603e
difflib.py: add a desc
pulkin May 19, 2024
df83f50
📜🤖 Added by blurb_it.
blurb-it[bot] May 19, 2024
0953ede
news: attempt fix build
pulkin May 19, 2024
7237b48
difflib.py: NEWS message
pulkin May 19, 2024
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difflib.py: rm left-over
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@pulkin
pulkin authored May 18, 2024
commit 2184911512a97be851bd12fdaa71c5327a82330b
1 change: 0 additions & 1 deletion Lib/difflib.py
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Original file line number Diff line number Diff line change
Expand Up @@ -930,7 +930,6 @@ def _fancy_replace(self, a, alo, ahi, b, blo, bhi):
weight += alen
elif j > blen / 2:
weight -= alen
weight = min(j - blo, bhi - 1 - j) * (ahi - alo - 1)
for i in range(alo, ahi):
ai = a[i]
if ai == bj:
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