Struct KeywordSpec 

pub struct KeywordSpec { /* private fields */ }

A vim-style iskeyword spec parsed once into its tokens.

The spec (e.g. "@,48-57,_,192-255") changes only when the option is set, but word motions classify every stepped-over char. Pre-parsing with KeywordSpec::parse and reusing it via KeywordSpec::matches avoids re-splitting/re-parsing the spec string on every character. The boolean result is identical to calling is_keyword_char with the same spec string.

Implementations

impl KeywordSpec

pub fn parse(spec: &str) -> Self

Parse a comma-separated iskeyword spec into a reusable matcher. Understood forms: @ (any alphabetic), _ (literal underscore), N-M (decimal char-code range, inclusive), bare integer N (single char code), single char (literal). Unknown tokens are dropped.

pub fn matches(&self, c: char) -> bool

True if c matches any token in the pre-parsed spec.

Trait Implementations

impl Clone for KeywordSpec

fn clone(&self) -> KeywordSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeywordSpec

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

Formats the value using the given formatter.

impl Default for KeywordSpec

fn default() -> KeywordSpec

Returns the “default value” for a type.