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Optimize core::unicode::printable. #139540

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Follow-up to #138024, which apparently still wasn't enough to fully optimize char::escape_debug.

Again, this only seems to make a difference on embedded targets, e.g. thumbv7m-none-eabi.

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rustbot commented Apr 8, 2025

r? @workingjubilee

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@rustbot rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. T-libs Relevant to the library team, which will review and decide on the PR/issue. labels Apr 8, 2025
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@reitermarkus reitermarkus force-pushed the optimize-char-printable branch from 1a57f45 to 9109550 Compare April 8, 2025 17:26
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r? libs

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