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Issue #21827: Fixed textwrap.dedent() for the case when largest common

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whitespace is a substring of smallest leading whitespace.
Based on patch by Robert Li.
This commit is contained in:
Serhiy Storchaka 2015-10-28 21:39:36 +02:00
parent 68b6874f59
commit ea4cb63e68
4 changed files with 18 additions and 4 deletions
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12
Lib/textwrap.py
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@ -429,11 +429,15 @@ def dedent(text):
elif margin.startswith(indent):
margin = indent
# Current line and previous winner have no common whitespace:
# there is no margin.
# Find the largest common whitespace between current line and previous
# winner.
else:
margin = ""
break
for i, (x, y) in enumerate(zip(margin, indent)):
if x != y:
margin = margin[:i]
break
else:
margin = margin[:len(indent)]
# sanity check (testing/debugging only)
if 0 and margin: