[issue21474] Idle: updata fixwordbreaks() for unicode identifiers

[miss-islington]

Change by miss-islington <mariatta.wijaya+miss-islington at gmail.com>:


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keywords: +patch
pull_requests: +6344
stage: commit review -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue21474>
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