Alejandro Alonso 5a0bbb9f89 [stdlib] Implement native grapheme breaking for String (#37864) ...

* Implement GraphemeWalker that does native grapheme breaking

* Bridged strings use native grapheme breaking for forward strides

* Implement bidirectional native grapheme breaking for native and foreign strings

* Remove ICU's grapheme breaking support

* Use UnicodeScalarView to implement GraphemeWalker

use an Iterator approach

remove Iterator conformance

* Incorporate Michael's feedback

more comments addressed

fix crlf bug

* Try bringing back some old fast paths

* Parameterize nextBoundary and previousBoundary

Parameterize nextBoundary and previousBoundary

* Implement Michael's suggestions

2021-11-01 16:52:28 -07:00

9.2 KiB

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