Enum UseColours

pub enum UseColours {
    Always,
    Automatic,
    Never,
}

Under what circumstances we should display coloured, rather than plain, output to the terminal.

By default, we want to display the colours when stdout can display them. Turning them on when output is going to, say, a pipe, would make programs such as grep or more not work properly. So the Automatic mode does this check and only displays colours when they can be truly appreciated.

Variants

Always

Display them even when output isn’t going to a terminal.

Automatic

Display them when output is going to a terminal, but not otherwise.

Never

Never display them, even when output is going to a terminal.

Trait Implementations

impl Clone for UseColours

fn clone(&self) -> UseColours

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UseColours

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

Formats the value using the given formatter.

impl PartialEq for UseColours

fn eq(&self, other: &UseColours) -> 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 Copy for UseColours

impl Eq for UseColours

impl StructuralPartialEq for UseColours