[issue16757] Faster _PyUnicode_FindMaxChar()

[STINNER Victor]

STINNER Victor added the comment:

Related commit:

changeset:   83066:b5d5f422299f
tag:         tip
user:        Victor Stinner <victor.stinner at gmail.com>
date:        Wed Apr 03 01:48:39 2013 +0200
files:       Include/unicodeobject.h Lib/test/test_format.py Objects/stringlib/unicode_format.h Objects/unicodeobject.c
description:
Add _PyUnicodeWriter_WriteSubstring() function

Write a function to enable more optimizations:

 * If the substring is the whole string and overallocation is disabled, just
   keep a reference to the string, don't copy characters
 * Avoid a call to the expensive _PyUnicode_FindMaxChar() function when
   possible

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16757>
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