Enum StrictSetting 

pub enum StrictSetting {
    Mode(StrictMode),
    Bool(bool),
    Function(Arc<StrictFunction>),
}

Configuration for strict mode behavior in KaTeX parsing and rendering.

This enum allows flexible configuration of how KaTeX handles non-standard LaTeX input. It can be set to a fixed strictness level, a simple boolean, or a custom function for dynamic strictness decisions based on context.

LaTeX/KaTeX Context

Strict mode controls KaTeX’s adherence to LaTeX standards. When enabled, KaTeX will report or reject input that deviates from standard LaTeX syntax, helping catch errors and ensure compatibility. The function variant allows fine-grained control over which inputs are considered strict violations.

Cross-references

• See StrictMode for available strictness levels.
• Used in Settings for global strict configuration.
• Related to StrictReturn for function return values.

Variants

Mode(StrictMode)

Fixed strict mode level applied to all inputs.

Uses the specified StrictMode for all parsing decisions.

Bool(bool)

Boolean strict setting for simple on/off control.

• true maps to StrictMode::Error (strict).
• false maps to StrictMode::Ignore (non-strict).

Function(Arc<StrictFunction>)

Custom function for dynamic strictness evaluation.

The function receives error code, message, and optional location, returning an optional StrictReturn to determine behavior.

Function Parameters

• error_code: String identifier for the type of strict violation.
• error_msg: Human-readable description of the issue.
• token: Optional location information for error reporting.

Function Return

• Some(StrictReturn) to specify strictness behavior.
• None to fall back to default behavior.

Trait Implementations

impl Clone for StrictSetting

fn clone(&self) -> StrictSetting

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StrictSetting

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

Formats the value using the given formatter.

impl Default for StrictSetting

fn default() -> Self

Returns the “default value” for a type.