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435348aa61
# Description In the past we named the process of completely removing a command and providing a basic error message pointing to the new alternative "deprecation". But this doesn't match the expectation of most users that have seen deprecation _warnings_ that alert to either impending removal or discouraged use after a stability promise. # User-Facing Changes Command category changed from `deprecated` to `removed`
44 lines
1.3 KiB
Rust
44 lines
1.3 KiB
Rust
use nu_protocol::ast::Call;
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use nu_protocol::engine::{Command, EngineState, Stack};
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use nu_protocol::{Category, PipelineData, ShellError, Signature, SyntaxShape, Type};
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#[derive(Clone)]
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pub struct LetEnv;
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impl Command for LetEnv {
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fn name(&self) -> &str {
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"let-env"
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}
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fn signature(&self) -> Signature {
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Signature::build(self.name())
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.input_output_types(vec![(Type::Nothing, Type::Nothing)])
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.allow_variants_without_examples(true)
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.optional("var_name", SyntaxShape::String, "variable name")
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.optional(
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"initial_value",
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SyntaxShape::Keyword(b"=".to_vec(), Box::new(SyntaxShape::MathExpression)),
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"equals sign followed by value",
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)
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.category(Category::Removed)
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}
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fn usage(&self) -> &str {
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"`let-env FOO = ...` has been removed, use `$env.FOO = ...` instead."
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}
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fn run(
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&self,
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_: &EngineState,
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_: &mut Stack,
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call: &Call,
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_: PipelineData,
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) -> Result<PipelineData, ShellError> {
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Err(nu_protocol::ShellError::RemovedCommand(
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self.name().to_string(),
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"$env.<environment variable> = ...".to_owned(),
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call.head,
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))
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}
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}
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