pub enum ColorChoice {
    Always,
    AlwaysAnsi,
    Auto,
    Never,
}
Expand description

ColorChoice represents the color preferences of an end user.

The Default implementation for this type will select Auto, which tries to do the right thing based on the current environment.

The FromStr implementation for this type converts a lowercase kebab-case string of the variant name to the corresponding variant. Any other string results in an error.

Variants

Always

Try very hard to emit colors. This includes emitting ANSI colors on Windows if the console API is unavailable.

AlwaysAnsi

AlwaysAnsi is like Always, except it never tries to use anything other than emitting ANSI color codes.

Auto

Try to use colors, but don’t force the issue. If the console isn’t available on Windows, or if TERM=dumb, or if NO_COLOR is defined, for example, then don’t use colors.

Never

Never emit colors.

Trait Implementations

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Formats the value using the given formatter. Read more

The default is Auto.

Returns the “default value” for a type. Read more
The associated error which can be returned from parsing.
Parses a string s to return a value of this type. Read more
This method tests for self and other values to be equal, and is used by ==. Read more
This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.