/// Checks if the given byte is a valid start of an ASCII identifier ([a-zA-Z_]).
#[inline]#[allow(dead_code)]pubfnis_ascii_ident_start(b:u8)->bool{
b.is_ascii_alphabetic()|| b ==b'_'}/// Checks if the given byte is a valid continuation of an ASCII identifier ([a-zA-Z0-9_]).
#[inline]#[allow(dead_code)]pubfnis_ascii_ident_continue(b:u8)->bool{
b.is_ascii_alphanumeric()|| b ==b'_'}