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stdx: Add floor/ceil/is grapheme boundary functions to RopeSliceExt

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These functions are the equivalent of 23b424a46 for grapheme clusters.
In order to add the `is_grapheme_boundary` function we also need to
query whether a byte index lies on a character boundary, so this change
also adds `is_char_boundary`.
This commit is contained in:
Michael Davis 2025-01-26 16:52:29 -05:00
parent 0364521dca
commit 39b72329b4
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6 changed files with 213 additions and 4 deletions
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helix-core/Cargo.toml
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@ -23,7 +23,7 @@ helix-parsec = { path = "../helix-parsec" }
ropey = { version = "1.6.1", default-features = false, features = ["simd"] }
smallvec = "1.13"
smartstring = "1.0.1"
unicode-segmentation = "1.12"
unicode-segmentation.workspace = true
# unicode-width is changing width definitions
# that both break our logic and disagree with common
# width definitions in terminals, we need to replace it.