Struct ListChars 

pub struct ListChars {
    pub tab_lead: char,
    pub tab_fill: Option<char>,
    pub space: Option<char>,
    pub trail: Option<char>,
    pub eol: Option<char>,
    pub nbsp: Option<char>,
    pub extends: Option<char>,
    pub precedes: Option<char>,
}

Invisibles rendering configuration for :set list / :set listchars.

Re-exported from hjkl_buffer::ListChars so callers programming to the engine surface don’t need to import hjkl-buffer directly. Invisibles rendering configuration. Matches vim’s :set listchars.

When :set list is on, the render layer substitutes whitespace characters with the glyphs configured here. None fields mean “no substitution / not rendered”.

Default matches vim’s built-in default: tab:^I,eol:$.

Fields

tab_lead: char

Leading char of a tab expansion (required). E.g. > in tab:>-.

tab_fill: Option<char>

Fill char repeated to next tabstop. None = single-glyph tab (no fill).

space: Option<char>

Substitution for regular spaces. None = no substitution (vim default).

trail: Option<char>

Substitution for trailing whitespace. None = falls back to space or no render.

eol: Option<char>

Marker appended after the last char on each line. None = no marker.

nbsp: Option<char>

Substitution for non-breaking spaces (\u{00a0}). None = no substitution.

extends: Option<char>

Char shown at the right edge when a line extends beyond the viewport (no-wrap mode). None = no marker. TODO: deferred — requires viewport edge integration.

precedes: Option<char>

Char shown at the left edge when the viewport is scrolled right past the line start. None = no marker. TODO: deferred — requires viewport edge integration.

Implementations

impl ListChars

pub fn parse(s: &str) -> Result<ListChars, String>

Parse a vim-style listchars value string.

Accepts comma-separated key:value pairs where value is one or two chars (UTF-8). tab is the only key that may have two chars (tab:lead_fill); all others take exactly one char.

Returns Err(String) with a diagnostic on unknown keys or bad values.

pub fn to_canonical_string(&self) -> String

Canonical string form for :set listchars?.

Emits only the fields that are set (non-None), always in the order: tab, space, trail, eol, nbsp, extends, precedes.

Trait Implementations

impl Clone for ListChars

fn clone(&self) -> ListChars

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ListChars

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

Formats the value using the given formatter.

impl Default for ListChars

fn default() -> ListChars

Returns the “default value” for a type.

impl PartialEq for ListChars

fn eq(&self, other: &ListChars) -> 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 Eq for ListChars

impl StructuralPartialEq for ListChars