Enum Unusable 

#[non_exhaustive]
pub enum Unusable {
    NotInPath,
    NotPortable,
}

Reason why a built-in found in the command search cannot be executed

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

NotInPath

The built-in is substitutive, but no corresponding external utility was found in $PATH.

NotPortable

The built-in, or the name under which it was found, is not defined in POSIX, and the Portable option rejects it.

Implementations

impl Unusable

pub const fn exit_status(self) -> ExitStatus

Returns the exit status the shell should produce for this reason.

This is 126 if the built-in was rejected, and 127 if it effectively does not exist as a runnable command.

Trait Implementations

impl Clone for Unusable

fn clone(&self) -> Unusable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Unusable

impl Debug for Unusable

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

Formats the value using the given formatter.

impl Display for Unusable

Describes the reason without naming the built-in.

The result is a sentence fragment meant to be embedded in an error message that identifies the built-in, so it does not mention the name itself. It states what the built-in is and why that makes it unusable, so the message stands on its own without a title telling the two reasons apart.

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

Formats the value using the given formatter.

impl Eq for Unusable

impl From<Unusable> for Error

fn from(unusable: Unusable) -> Self

Converts to this type from the input type.

impl Hash for Unusable

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Unusable

fn eq(&self, other: &Unusable) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Unusable