Refactor to improve states

*   Remove custom kind wrappers, use plain bytes instead
*   Remove `Into`s, use the explicit expected types instead
*   Refactor to use `slice.as_str` in most places
*   Remove unneeded unique check before adding a definition
*   Use a shared CDATA prefix in constants
*   Inline byte checks into matches
*   Pass bytes back from parser instead of whole parse state
*   Refactor to work more often on bytes
*   Rename custom `size` to `len`

1 files changed, 2 insertions, 1 deletions

diff --git a/src/construct/character_escape.rs b/src/construct/character_escape.rs
index 02e8b62..4419d7a 100644
--- a/src/construct/character_escape.rs
+++ b/src/construct/character_escape.rs
@@ -63,7 +63,8 @@ pub fn start(tokenizer: &mut Tokenizer) -> State {
 /// ```
 fn inside(tokenizer: &mut Tokenizer) -> State {
     match tokenizer.current {
-        Some(byte) if byte.is_ascii_punctuation() => {
+        // ASCII punctuation.
+        Some(b'!'..=b'/' | b':'..=b'@' | b'['..=b'`' | b'{'..=b'~') => {
             tokenizer.enter(Token::CharacterEscapeValue);
             tokenizer.consume();
             tokenizer.exit(Token::CharacterEscapeValue);