nu_cmd_lang/core_commands/overlay/
command.rs

1use nu_engine::{command_prelude::*, get_full_help};
2use nu_protocol::engine::CommandType;
3
4#[derive(Clone)]
5pub struct Overlay;
6
7impl Command for Overlay {
8    fn name(&self) -> &str {
9        "overlay"
10    }
11
12    fn signature(&self) -> Signature {
13        Signature::build("overlay")
14            .category(Category::Core)
15            .input_output_types(vec![(Type::Nothing, Type::String)])
16    }
17
18    fn description(&self) -> &str {
19        "Commands for manipulating overlays."
20    }
21
22    fn extra_description(&self) -> &str {
23        r#"This command is a parser keyword. For details, check:
24  https://www.nushell.sh/book/thinking_in_nu.html
25
26  You must use one of the following subcommands. Using this command as-is will only produce this help message."#
27    }
28
29    fn command_type(&self) -> CommandType {
30        CommandType::Keyword
31    }
32
33    fn run(
34        &self,
35        engine_state: &EngineState,
36        stack: &mut Stack,
37        call: &Call,
38        _input: PipelineData,
39    ) -> Result<PipelineData, ShellError> {
40        Ok(Value::string(get_full_help(self, engine_state, stack), call.head).into_pipeline_data())
41    }
42}
nu_cmd_lang/core_commands/overlay/command.rs

nu_cmd_lang/core_commands/overlay/
command.rs
