Enum Script 

pub enum Script {
    Arabic,
    Hebrew,
    Devanagari,
    Bengali,
    Tamil,
    Gurmukhi,
    Gujarati,
    Telugu,
    Kannada,
    Malayalam,
    Oriya,
    Sinhala,
    Khmer,
    Thai,
    Other,
}

Coarse script classification used to decide which feature tag list the shaper applies to a run. Only the scripts that need contextual shaping are enumerated; everything else collapses to Other.

Variants

Arabic

Arabic block + supplements + presentation forms (U+0600..U+06FF, U+0750..U+077F, U+08A0..U+08FF, U+FB50..U+FDFF, U+FE70..U+FEFF).

Hebrew

Hebrew block + Alphabetic Presentation Forms-A Hebrew range (U+0590..U+05FF, U+FB1D..U+FB4F).

Devanagari

Devanagari block (U+0900..U+097F). Hindi / Marathi / Sanskrit / Nepali. Round 8 added cluster-based shaping — see super::indic for the cluster machine and super::indic::devanagari_feature_tags for the substitution-feature application order.

Bengali

Bengali block (U+0980..U+09FF). Bengali / Assamese / Manipuri. Round 10 added cluster-based shaping — same broad shape as Devanagari (halant-driven conjuncts, reph rule for RA U+09B0, pre-base matra reorder) but Bengali has THREE pre-base matras (U+09BF / U+09C7 / U+09C8) instead of Devanagari’s one.

Tamil

Tamil block (U+0B80..U+0BFF). Tamil. Round 10 added minimal cluster-based shaping: pre-base matra reorder (U+0BC6 / U+0BC7 / U+0BC8) only — no reph (Tamil RA renders in-line), no nukta, no conjunct formation in the modern orthography.

Gurmukhi

Gurmukhi block (U+0A00..U+0A7F). Punjabi. Round 11 added halant-driven cluster machine: pre-base matra reorder (U+0A3F sign “i”); reph rare in modern usage (RA U+0A30 sets the flag for fonts that ship a rphf lookup, callers without one fall back to in-line RA rendering).

Gujarati

Gujarati block (U+0A80..U+0AFF). Gujarati. Round 11 added — closest in shape to Devanagari (halant-driven conjuncts; pre-base matra U+0ABF; reph rule on RA U+0AB0).

Telugu

Telugu block (U+0C00..U+0C7F). Telugu. Round 11 added — reph identification on RA U+0C30 plus pre-base matra reorder for U+0C46 / U+0C47 / U+0C48 (e / ee / ai). The Telugu split vowels (U+0C46 + U+0C56) decompose to a pre-base + post-base pair under NFD; the cluster machine flags the pre-base component for reorder.

Kannada

Kannada block (U+0C80..U+0CFF). Kannada. Round 11 added — similar shape to Telugu (reph on RA U+0CB0; pre-base matras U+0CC6 / U+0CC7 / U+0CC8) with its own codepoints + halant (U+0CCD).

Malayalam

Malayalam block (U+0D00..U+0D7F). Malayalam. Round 11 added — pre-base matras U+0D46 / U+0D47 / U+0D48 plus the chillu (half-form) characters U+0D7A..U+0D7F treated as consonants (they are NFC-stable independent codepoints in modern Malayalam orthography). No reph in modern Malayalam — chillu replaces the historic reph rendering.

Oriya

Oriya block (U+0B00..U+0B7F). Oriya / Odia. Round 11 added — reph identification on RA U+0B30 plus pre-base matra reorder for U+0B47 / U+0B48 / U+0B4B / U+0B4C (Oriya is unusual in that the precomposed o / au matras are themselves pre-base after canonical decomposition). Halant U+0B4D drives conjuncts.

Sinhala

Sinhala block (U+0D80..U+0DFF). Sinhala. Round 12 (Brahmic non-Indic) — closest to Indic in shape. Halant / al-lakuna U+0DCA drives conjuncts; pre-base matras U+0DD9..U+0DDB (e / ee / ai) plus the precomposed two-part vowels U+0DDC..U+0DDE (o / oo / au) reorder to the front of the cluster. No reph (Sinhala has no superscript reph rendering).

Khmer

Khmer block (U+1780..U+17FF). Khmer / Cambodian. Round 12 added — coeng (U+17D2) plays the role of halant and stacks subjoined consonants underneath the base; subjoined chains are commonly 2-3 deep in Pali borrowings. Pre-base matras U+17BE / U+17BF / U+17C0..U+17C5 reorder to the front of the cluster. No reph.

Thai

Thai block (U+0E00..U+0E7F). Thai. Round 12 added — no halant and no conjunct formation; pre-base vowels U+0E40..U+0E44 already appear in storage / keyboard order BEFORE their consonant (the one Indic-family script where this is the case), so no reorder is needed — the cluster machine simply starts a new cluster at each pre-base vowel. Tone marks U+0E48..U+0E4B

• signs U+0E4C..U+0E4E attach to the cluster end.

Other

Anything else — Latin, CJK, Cyrillic, Greek, etc.

Trait Implementations

impl Clone for Script

fn clone(&self) -> Script

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Script

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Script

fn eq(&self, other: &Script) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Script

impl Eq for Script

impl StructuralPartialEq for Script