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gh-111259: Optimize recursive wildcards in pathlib #111303

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Oct 26, 2023
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gh-111259: Optimize recursive wildcards in pathlib #111303

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6 changes: 3 additions & 3 deletions Lib/pathlib.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,13 +124,13 @@ def _compile_pattern_lines(pattern_lines, case_sensitive):
elif part == '*':
part = r'.+'
elif part == '**\n':
# '**/' component: we use '[\s\S]' rather than '.' so that path
# '**/' component: we use '(?s:.)' rather than '.' so that path
# separators (i.e. newlines) are matched. The trailing '^' ensures
# we terminate after a path separator (i.e. on a new line).
part = r'[\s\S]*^'
part = r'(?s:.)*^'
elif part == '**':
# '**' component.
part = r'[\s\S]*'
part = r'(?s:.)*'
elif '**' in part:
raise ValueError("Invalid pattern: '**' can only be an entire path component")
else:
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Library/2023-10-25-11-13-35.gh-issue-111259.z7ndeA.rst
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@@ -0,0 +1 @@
Optimize recursive wildcards in :mod:`pathlib`.