Enum ConfigError 

pub enum ConfigError {
    UnknownOption(String),
    DuplicateName(String),
    NotBoolean(String),
    Validation(String),
    Parse(String),
    QueryNotAllowed(String),
    TypeMismatch {
        expected: &'static str,
        actual: &'static str,
    },
}

What the registry’s fallible operations can fail with. Kept separate from raw String errors so callers can echo the canonical message without re-stringifying.

Vim-style E codes match the existing TUI cmdline echo wording; renderer-agnostic by design (every renderer surfaces these the same way).

Variants

UnknownOption(String)

No option (or alias) is registered under this name. Also returned by ConfigRegistry::parse_for_buffer_local for an option registered without a TypeId (it cannot be layered).

DuplicateName(String)

ConfigRegistry::try_register found this name or alias already taken. Nothing was registered.

NotBoolean(String)

:set noFOO against a non-bool option. Wording matches the pre-typed-options TUI echo.

Validation(String)

:set tabstop=999 (out-of-range) etc. — produced by the option’s validate closure. Wording is the closure’s verbatim.

Parse(String)

:set foldmethod=xyz — produced by the option type’s parse impl. Wording is the impl’s verbatim.

QueryNotAllowed(String)

name? passed to parse_for_buffer_local. Query forms are not writes; callers should use :set name? or :setlocal name? to echo instead of calling into the write path.

TypeMismatch

A typed access named a value type the registered option does not have. Currently constructed nowhere in the workspace — the typed paths report a mismatch as None (ConfigRegistry::try_get) or a String error (ConfigRegistry::set) instead.

Fields

expected: &'static str

The accessor’s OptionType::type_label.

actual: &'static str

The registered option’s type label.

Trait Implementations

impl Debug for ConfigError

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

Formats the value using the given formatter.

impl Display for ConfigError

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

Formats the value using the given formatter.

impl Error for ConfigError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.