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gh-130273: Add pure Python implementation of unicodedata.iter_graphemes() #148218

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ambv wants to merge 6 commits into from
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gh-130273: Add pure Python implementation of unicodedata.iter_graphemes() #148218

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df60e53
Add pure Python implementation of unicodedata.iter_graphemes()
ambv Apr 7, 2026
6262980
Add _py_grapheme to stdlib_module_names.h
ambv Apr 7, 2026
38db422
Make the first argument positional-only
ambv Apr 7, 2026
70bdb56
Make _py_grapheme standalone by generating property tables
ambv Apr 7, 2026
5701c0b
Fix newlines to make linter happy
ambv Apr 7, 2026
e073e06
Achieve 100% statement and branch test coverage
ambv Apr 7, 2026
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Make the first argument positional-only
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@ambv
ambv committed Apr 7, 2026
commit 38db42282e52b46c8c59753e3fa322d04999bc12
2 changes: 1 addition & 1 deletion Lib/_py_grapheme.py
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Expand Up @@ -135,7 +135,7 @@ def _grapheme_break(prev_gcb, curr_gcb, ep_state, ri_flag, incb_state):
return True


def iter_graphemes(string, start=0, end=sys.maxsize):
def iter_graphemes(string, /, start=0, end=sys.maxsize):
"""Iterate over grapheme clusters in a string.

Uses extended grapheme cluster rules from TR29.
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