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feat(nu): 'nushell' completion support

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Ed Page 2023-05-23 08:50:43 -05:00
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Cargo.toml
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@ -7,6 +7,7 @@ members = [
"clap_lex",
"clap_complete",
"clap_complete_fig",
"clap_complete_nushell",
"clap_mangen",
]

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clap_complete_nushell/CHANGELOG.md Normal file
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# Change Log
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](http://keepachangelog.com/)
and this project adheres to [Semantic Versioning](http://semver.org/).
<!-- next-header -->
## [Unreleased] - ReleaseDate
<!-- next-url -->
[Unreleased]: https://github.com/clap-rs/clap/compare/bd163098e122bb65e053a61b773931c8f36d2e7d...HEAD

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clap_complete_nushell/Cargo.toml Normal file
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[package]
name = "clap_complete_nushell"
version = "0.1.11"
description = "A generator library used with clap for Nushell completion scripts"
repository = "https://github.com/clap-rs/clap/tree/master/clap_complete_nushell"
categories = ["command-line-interface"]
keywords = [
"clap",
"cli",
"completion",
"nushell"
]
license.workspace = true
edition.workspace = true
rust-version.workspace = true
include.workspace = true
[package.metadata.docs.rs]
targets = ["x86_64-unknown-linux-gnu"]
[package.metadata.release]
pre-release-replacements = [
{file="CHANGELOG.md", search="Unreleased", replace="{{version}}", min=1},
{file="CHANGELOG.md", search="\\.\\.\\.HEAD", replace="...{{tag_name}}", exactly=1},
{file="CHANGELOG.md", search="ReleaseDate", replace="{{date}}", min=1},
{file="CHANGELOG.md", search="<!-- next-header -->", replace="<!-- next-header -->\n## [Unreleased] - ReleaseDate\n", exactly=1},
{file="CHANGELOG.md", search="<!-- next-url -->", replace="<!-- next-url -->\n[Unreleased]: https://github.com/clap-rs/clap/compare/{{tag_name}}...HEAD", exactly=1},
]
[lib]
bench = false
[dependencies]
clap = { path = "../", version = "4.0.0", default-features = false, features = ["std"] }
clap_complete = { path = "../clap_complete", version = "4.0.0" }
[dev-dependencies]
snapbox = { version = "0.4.10", features = ["diff"] }
clap = { path = "../", version = "4.0.0", default-features = false, features = ["std", "help"] }
nu-cli = "0.78.0"
nu-command = "0.78.0"
nu-parser = "0.78.0"
nu-protocol = "0.78.0"
nu-test-support = "0.78.0"
reedline = "0.18.0"

201
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@ -0,0 +1,201 @@
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21
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@ -0,0 +1,21 @@
The MIT License (MIT)
Copyright (c) 2022 nibon7 <nibon7@163.com> and Clap Contributors
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# clap_complete_nushell
Generates [Nushell](https://github.com/nushell/nushell) completions for [`clap`](https://github.com/clap-rs/clap) based CLIs
[![Crates.io](https://img.shields.io/crates/v/clap_complete_nushell)](https://crates.io/crates/clap_complete_nushell)
[![Crates.io](https://img.shields.io/crates/d/clap_complete_nushell)](https://crates.io/crates/clap_complete_nushell)
[![License](https://img.shields.io/badge/license-Apache%202.0-blue)](LICENSE-APACHE)
[![License](https://img.shields.io/badge/license-MIT-blue)](LICENSE-MIT)
[![docs.rs](https://img.shields.io/docsrs/clap_complete_nushell)](https://docs.rs/clap_complete_nushell)
- [Questions & Discussions](https://github.com/clap-rs/clap/discussions)
- [CONTRIBUTING](../CONTRIBUTING.md)
## Examples
### myapp.rs
```rust
use clap::{builder::PossibleValue, Arg, ArgAction, Command, ValueHint};
use clap_complete::generate;
use clap_complete_nushell::Nushell;
use std::io;
fn main() {
let mut cmd = Command::new("myapp")
.version("3.0")
.propagate_version(true)
.about("Tests completions")
.arg(
Arg::new("file")
.value_hint(ValueHint::FilePath)
.help("some input file"),
)
.arg(
Arg::new("config")
.action(ArgAction::Count)
.help("some config file")
.short('c')
.visible_short_alias('C')
.long("config")
.visible_alias("conf"),
)
.arg(Arg::new("choice").value_parser(["first", "second"]))
.subcommand(
Command::new("test").about("tests things").arg(
Arg::new("case")
.long("case")
.action(ArgAction::Set)
.help("the case to test"),
),
)
.subcommand(
Command::new("some_cmd")
.about("top level subcommand")
.subcommand(
Command::new("sub_cmd").about("sub-subcommand").arg(
Arg::new("config")
.long("config")
.action(ArgAction::Set)
.value_parser([PossibleValue::new("Lest quotes aren't escaped.")])
.help("the other case to test"),
),
),
);
generate(Nushell, &mut cmd, "myapp", &mut io::stdout());
}
```
### myapp.nu
```nu
module completions {
def "nu-complete myapp choice" [] {
[ "first" "second" ]
}
# Tests completions
export extern myapp [
file?: string # some input file
--config(-c) # some config file
--conf # some config file
-C # some config file
choice?: string@"nu-complete myapp choice"
--version(-V) # Print version
]
# tests things
export extern "myapp test" [
--case: string # the case to test
--version(-V) # Print version
]
# top level subcommand
export extern "myapp some_cmd" [
--version(-V) # Print version
]
def "nu-complete myapp some_cmd sub_cmd config" [] {
[ "\"Lest quotes aren't escaped.\"" ]
}
# sub-subcommand
export extern "myapp some_cmd sub_cmd" [
--config: string@"nu-complete myapp some_cmd sub_cmd config" # the other case to test
--version(-V) # Print version
]
}
use completions *
```

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use clap::Command;
use clap_complete::generate;
use clap_complete_nushell::Nushell;
use std::io;
fn main() {
let mut cmd = Command::new("myapp")
.subcommand(Command::new("test").subcommand(Command::new("config")))
.subcommand(Command::new("hello"));
generate(Nushell, &mut cmd, "myapp", &mut io::stdout());
}

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use clap::{builder::PossibleValue, Arg, ArgAction, Command, ValueHint};
use clap_complete::generate;
use clap_complete_nushell::Nushell;
use std::io;
fn main() {
let mut cmd = Command::new("myapp")
.version("3.0")
.propagate_version(true)
.about("Tests completions")
.arg(
Arg::new("file")
.value_hint(ValueHint::FilePath)
.help("some input file"),
)
.arg(
Arg::new("config")
.action(ArgAction::Count)
.help("some config file")
.short('c')
.visible_short_alias('C')
.long("config")
.visible_alias("conf"),
)
.arg(Arg::new("choice").value_parser(["first", "second"]))
.subcommand(
Command::new("test").about("tests things").arg(
Arg::new("case")
.long("case")
.action(ArgAction::Set)
.help("the case to test"),
),
)
.subcommand(
Command::new("some_cmd")
.about("top level subcommand")
.subcommand(
Command::new("sub_cmd").about("sub-subcommand").arg(
Arg::new("config")
.long("config")
.action(ArgAction::Set)
.value_parser([PossibleValue::new("Lest quotes aren't escaped.")])
.help("the other case to test"),
),
),
);
generate(Nushell, &mut cmd, "myapp", &mut io::stdout());
}

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//! Generates [Nushell](https://github.com/nushell/nushell) completions for [`clap`](https://github.com/clap-rs/clap) based CLIs
//!
//! ## Example
//!
//! ```
//! use clap::Command;
//! use clap_complete::generate;
//! use clap_complete_nushell::Nushell;
//! use std::io;
//!
//! let mut cmd = Command::new("myapp")
//! .subcommand(Command::new("test").subcommand(Command::new("config")))
//! .subcommand(Command::new("hello"));
//!
//! generate(Nushell, &mut cmd, "myapp", &mut io::stdout());
//! ```
#![doc(html_logo_url = "https://raw.githubusercontent.com/clap-rs/clap/master/assets/clap.png")]
#![warn(missing_docs, trivial_casts, unused_allocation, trivial_numeric_casts)]
#![forbid(unsafe_code)]
use clap::{builder::PossibleValue, Arg, ArgAction, Command};
use clap_complete::Generator;
/// Generate Nushell complete file
pub struct Nushell;
impl Generator for Nushell {
fn file_name(&self, name: &str) -> String {
format!("{name}.nu")
}
fn generate(&self, cmd: &Command, buf: &mut dyn std::io::Write) {
let mut completions = String::new();
completions.push_str("module completions {\n\n");
generate_completion(&mut completions, cmd, false);
for sub in cmd.get_subcommands() {
generate_completion(&mut completions, sub, true);
}
completions.push_str("}\n\n");
completions.push_str("use completions *\n");
buf.write_all(completions.as_bytes())
.expect("Failed to write to generated file")
}
}
fn append_value_completion_and_help(
arg: &Arg,
name: &str,
possible_values: &Vec<PossibleValue>,
s: &mut String,
) {
let takes_values = arg
.get_num_args()
.map(|r| r.takes_values())
.unwrap_or(false);
if takes_values {
s.push_str(": string");
if !possible_values.is_empty() {
s.push_str(format!(r#"@"nu-complete {} {}""#, name, arg.get_id()).as_str())
}
}
if let Some(help) = arg.get_help() {
let indent: usize = 30;
let width = match s.lines().last() {
Some(line) => indent.saturating_sub(line.len()),
None => 0,
};
s.push_str(format!("{:>width$}# {}", ' ', help).as_str());
}
s.push('\n');
}
fn append_value_completion_defs(arg: &Arg, name: &str, s: &mut String) {
let possible_values = arg.get_possible_values();
if possible_values.is_empty() {
return;
}
s.push_str(format!(r#" def "nu-complete {} {}" [] {{"#, name, arg.get_id()).as_str());
s.push_str("\n [");
for value in possible_values {
let vname = value.get_name();
if vname.contains(|c: char| c.is_whitespace()) {
s.push_str(format!(r#" "\"{vname}\"""#).as_str());
} else {
s.push_str(format!(r#" "{vname}""#).as_str());
}
}
s.push_str(" ]\n }\n\n");
}
fn append_argument(arg: &Arg, name: &str, s: &mut String) {
let possible_values = arg.get_possible_values();
if arg.is_positional() {
// rest arguments
if matches!(arg.get_action(), ArgAction::Append) {
s.push_str(format!(" ...{}", arg.get_id()).as_str());
} else {
s.push_str(format!(" {}", arg.get_id()).as_str());
if !arg.is_required_set() {
s.push('?');
}
}
append_value_completion_and_help(arg, name, &possible_values, s);
return;
}
let shorts = arg.get_short_and_visible_aliases();
let longs = arg.get_long_and_visible_aliases();
match shorts {
Some(shorts) => match longs {
Some(longs) => {
// short options and long options
s.push_str(
format!(
" --{}(-{})",
longs.first().expect("At least one long option expected"),
shorts.first().expect("At lease one short option expected")
)
.as_str(),
);
append_value_completion_and_help(arg, name, &possible_values, s);
// long alias
for long in longs.iter().skip(1) {
s.push_str(format!(" --{long}").as_str());
append_value_completion_and_help(arg, name, &possible_values, s);
}
// short alias
for short in shorts.iter().skip(1) {
s.push_str(format!(" -{short}").as_str());
append_value_completion_and_help(arg, name, &possible_values, s);
}
}
None => {
// short options only
for short in shorts {
s.push_str(format!(" -{short}").as_str());
append_value_completion_and_help(arg, name, &possible_values, s);
}
}
},
None => match longs {
Some(longs) => {
// long options only
for long in longs {
s.push_str(format!(" --{long}").as_str());
append_value_completion_and_help(arg, name, &possible_values, s);
}
}
None => unreachable!("No short or long options found"),
},
}
}
fn generate_completion(completions: &mut String, cmd: &Command, is_subcommand: bool) {
let name = cmd.get_bin_name().expect("Failed to get bin name");
for arg in cmd.get_arguments() {
append_value_completion_defs(arg, name, completions);
}
if let Some(about) = cmd.get_about() {
completions.push_str(format!(" # {about}\n").as_str());
}
if is_subcommand {
completions.push_str(format!(" export extern \"{name}\" [\n").as_str());
} else {
completions.push_str(format!(" export extern {name} [\n").as_str());
}
for arg in cmd.get_arguments() {
append_argument(arg, name, completions);
}
completions.push_str(" ]\n\n");
if is_subcommand {
for sub in cmd.get_subcommands() {
generate_completion(completions, sub, true);
}
}
}

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use clap::{builder::PossibleValue, Arg, ArgAction, Command, ValueHint};
pub fn basic_command(name: &'static str) -> Command {
Command::new(name)
.arg(
Arg::new("config")
.short('c')
.global(true)
.action(ArgAction::SetTrue),
)
.arg(
Arg::new("v")
.short('v')
.conflicts_with("config")
.action(ArgAction::SetTrue),
)
.subcommand(
Command::new("test")
.about("Subcommand")
.arg(Arg::new("debug").short('d').action(ArgAction::Count)),
)
}
pub fn feature_sample_command(name: &'static str) -> Command {
Command::new(name)
.version("3.0")
.propagate_version(true)
.about("Tests completions")
.arg(
Arg::new("file")
.value_hint(ValueHint::FilePath)
.help("some input file"),
)
.arg(
Arg::new("config")
.action(ArgAction::Count)
.help("some config file")
.short('c')
.visible_short_alias('C')
.long("config")
.visible_alias("conf"),
)
.arg(Arg::new("choice").value_parser(["first", "second"]))
.subcommand(
Command::new("test").about("tests things").arg(
Arg::new("case")
.long("case")
.action(ArgAction::Set)
.help("the case to test"),
),
)
}
pub fn special_commands_command(name: &'static str) -> Command {
feature_sample_command(name)
.subcommand(
Command::new("some_cmd")
.about("tests other things")
.arg(
Arg::new("config")
.long("config")
.hide(true)
.action(ArgAction::Set)
.require_equals(true)
.help("the other case to test"),
)
.arg(Arg::new("path").num_args(1..)),
)
.subcommand(Command::new("some-cmd-with-hyphens").alias("hyphen"))
.subcommand(Command::new("some-hidden-cmd").hide(true))
}
pub fn quoting_command(name: &'static str) -> Command {
Command::new(name)
.version("3.0")
.arg(
Arg::new("single-quotes")
.long("single-quotes")
.action(ArgAction::SetTrue)
.help("Can be 'always', 'auto', or 'never'"),
)
.arg(
Arg::new("double-quotes")
.long("double-quotes")
.action(ArgAction::SetTrue)
.help("Can be \"always\", \"auto\", or \"never\""),
)
.arg(
Arg::new("backticks")
.long("backticks")
.action(ArgAction::SetTrue)
.help("For more information see `echo test`"),
)
.arg(
Arg::new("backslash")
.long("backslash")
.action(ArgAction::SetTrue)
.help("Avoid '\\n'"),
)
.arg(
Arg::new("brackets")
.long("brackets")
.action(ArgAction::SetTrue)
.help("List packages [filter]"),
)
.arg(
Arg::new("expansions")
.long("expansions")
.action(ArgAction::SetTrue)
.help("Execute the shell command with $SHELL"),
)
.subcommands([
Command::new("cmd-single-quotes").about("Can be 'always', 'auto', or 'never'"),
Command::new("cmd-double-quotes").about("Can be \"always\", \"auto\", or \"never\""),
Command::new("cmd-backticks").about("For more information see `echo test`"),
Command::new("cmd-backslash").about("Avoid '\\n'"),
Command::new("cmd-brackets").about("List packages [filter]"),
Command::new("cmd-expansions").about("Execute the shell command with $SHELL"),
])
}
pub fn aliases_command(name: &'static str) -> Command {
Command::new(name)
.version("3.0")
.about("testing nushell completions")
.arg(
Arg::new("flag")
.short('f')
.visible_short_alias('F')
.long("flag")
.action(ArgAction::SetTrue)
.visible_alias("flg")
.help("cmd flag"),
)
.arg(
Arg::new("option")
.short('o')
.visible_short_alias('O')
.long("option")
.visible_alias("opt")
.help("cmd option")
.action(ArgAction::Set),
)
.arg(Arg::new("positional"))
}
pub fn sub_subcommands_command(name: &'static str) -> Command {
feature_sample_command(name).subcommand(
Command::new("some_cmd")
.about("top level subcommand")
.visible_alias("some_cmd_alias")
.subcommand(
Command::new("sub_cmd").about("sub-subcommand").arg(
Arg::new("config")
.long("config")
.action(ArgAction::Set)
.value_parser([
PossibleValue::new("Lest quotes, aren't escaped.")
.help("help,with,comma"),
PossibleValue::new("Second to trigger display of options"),
])
.help("the other case to test"),
),
),
)
}
pub fn value_hint_command(name: &'static str) -> Command {
Command::new(name)
.arg(
Arg::new("choice")
.long("choice")
.action(ArgAction::Set)
.value_parser(["bash", "fish", "zsh"]),
)
.arg(
Arg::new("unknown")
.long("unknown")
.value_hint(ValueHint::Unknown),
)
.arg(Arg::new("other").long("other").value_hint(ValueHint::Other))
.arg(
Arg::new("path")
.long("path")
.short('p')
.value_hint(ValueHint::AnyPath),
)
.arg(
Arg::new("file")
.long("file")
.short('f')
.value_hint(ValueHint::FilePath),
)
.arg(
Arg::new("dir")
.long("dir")
.short('d')
.value_hint(ValueHint::DirPath),
)
.arg(
Arg::new("exe")
.long("exe")
.short('e')
.value_hint(ValueHint::ExecutablePath),
)
.arg(
Arg::new("cmd_name")
.long("cmd-name")
.value_hint(ValueHint::CommandName),
)
.arg(
Arg::new("cmd")
.long("cmd")
.short('c')
.value_hint(ValueHint::CommandString),
)
.arg(
Arg::new("command_with_args")
.action(ArgAction::Set)
.num_args(1..)
.trailing_var_arg(true)
.value_hint(ValueHint::CommandWithArguments),
)
.arg(
Arg::new("user")
.short('u')
.long("user")
.value_hint(ValueHint::Username),
)
.arg(
Arg::new("host")
.short('H')
.long("host")
.value_hint(ValueHint::Hostname),
)
.arg(Arg::new("url").long("url").value_hint(ValueHint::Url))
.arg(
Arg::new("email")
.long("email")
.value_hint(ValueHint::EmailAddress),
)
}
pub fn assert_matches_path(
expected_path: impl AsRef<std::path::Path>,
gen: impl clap_complete::Generator,
mut cmd: Command,
name: &'static str,
) {
let mut buf = vec![];
clap_complete::generate(gen, &mut cmd, name, &mut buf);
snapbox::Assert::new()
.action_env("SNAPSHOTS")
.normalize_paths(false)
.matches_path(expected_path, buf);
}

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use std::fs::File;
use std::io::Read;
use std::path::Path;
use std::path::PathBuf;
use std::sync::Arc;
use nu_cli::NuCompleter;
use nu_command::create_default_context;
use nu_parser::parse;
use nu_protocol::{
engine::{EngineState, Stack, StateWorkingSet},
Value,
};
use reedline::{Completer as _, Suggestion};
// creates a new engine with the current path into the completions fixtures folder
fn new_engine() -> (PathBuf, EngineState, Stack) {
// Target folder inside assets
let mut dir = Path::new(env!("CARGO_MANIFEST_DIR")).join("tests");
dir.push("snapshots");
let mut dir_str = dir
.clone()
.into_os_string()
.into_string()
.unwrap_or_default();
dir_str.push(std::path::MAIN_SEPARATOR);
// Create a new engine with default context
let mut engine_state = create_default_context();
// New stack
let mut stack = Stack::new();
// Add pwd as env var
stack.add_env_var(
"PWD".to_string(),
Value::String {
val: dir_str.clone(),
span: nu_protocol::Span::new(0, dir_str.len()),
},
);
#[cfg(windows)]
stack.add_env_var(
"Path".to_string(),
Value::String {
val: "c:\\some\\path;c:\\some\\other\\path".to_string(),
span: nu_protocol::Span::new(0, dir_str.len()),
},
);
#[cfg(not(windows))]
stack.add_env_var(
"PATH".to_string(),
Value::String {
val: "/some/path:/some/other/path".to_string(),
span: nu_protocol::Span::new(0, dir_str.len()),
},
);
// Merge environment into the permanent state
let merge_result = engine_state.merge_env(&mut stack, &dir);
assert!(merge_result.is_ok(), "{}", merge_result.unwrap_err());
(dir, engine_state, stack)
}
fn external_completion(file_name: &str) -> NuCompleter {
// Create a new engine
let (dir, mut engine_state, mut stack) = new_engine();
let path = dir.join(file_name);
let mut buf = Vec::new();
let mut file =
File::open(&path).unwrap_or_else(|_| panic!("Failed to open {}", path.display()));
file.read_to_end(&mut buf)
.unwrap_or_else(|_| panic!("Failed to open {}", path.display()));
let (_, delta) = {
let mut working_set = StateWorkingSet::new(&engine_state);
let (block, err) = parse(&mut working_set, None, &buf, false, &[]);
assert!(err.is_none(), "{:?}", err.unwrap());
(block, working_set.render())
};
assert!(engine_state.merge_delta(delta).is_ok());
// Merge environment into the permanent state
assert!(engine_state.merge_env(&mut stack, &dir).is_ok());
let latest_block_id = engine_state.num_blocks() - 1;
// Change config adding the external completer
let mut config = engine_state.get_config().clone();
config.external_completer = Some(latest_block_id);
engine_state.set_config(&config);
// Instantiate a new completer
NuCompleter::new(Arc::new(engine_state), stack)
}
// match a list of suggestions with the expected values
#[track_caller]
fn assert_suggestions(expected: &[&str], suggestions: Vec<Suggestion>) {
let expected = expected
.iter()
.map(|s| (*s).to_owned())
.collect::<Vec<String>>();
let suggestions = suggestions
.into_iter()
.map(|s| s.value)
.collect::<Vec<String>>();
assert_eq!(expected, suggestions);
}
#[test]
fn completion_basic() {
let mut completer = external_completion("basic.nu");
let input = "my-app -";
let suggestions = completer.complete(input, input.len());
let expected = &["--help", "-c", "-h", "-v"];
assert_suggestions(expected, suggestions);
let input = "my-app test -";
let suggestions = completer.complete(input, input.len());
let expected = &["--help", "-c", "-d", "-h"];
assert_suggestions(expected, suggestions);
}
#[test]
fn completion_feature_sample() {
let mut completer = external_completion("feature_sample.nu");
let input = "my-app test --";
let suggestions = completer.complete(input, input.len());
let expected = &["--case", "--help", "--version"];
assert_suggestions(expected, suggestions);
let input = "my-app choice ";
let suggestions = completer.complete(input, input.len());
let expected = &["first", "second"];
assert_suggestions(expected, suggestions);
let input = "my-app -";
let suggestions = completer.complete(input, input.len());
let expected = &[
"--conf",
"--config",
"--help",
"--version",
"-C",
"-V",
"-c",
"-h",
];
assert_suggestions(expected, suggestions);
let input = "my-app --";
let suggestions = completer.complete(input, input.len());
let expected = &["--conf", "--config", "--help", "--version"];
assert_suggestions(expected, suggestions);
}
#[test]
fn completion_special_commands() {
let mut completer = external_completion("special_commands.nu");
let input = "my-app some";
let suggestions = completer.complete(input, input.len());
let expected = &[
"my-app some_cmd",
"my-app some-hidden-cmd",
"my-app some-cmd-with-hyphens",
];
assert_suggestions(expected, suggestions);
let input = "my-app choice ";
let suggestions = completer.complete(input, input.len());
let expected = &["first", "second"];
assert_suggestions(expected, suggestions);
let input = "my-app -";
let suggestions = completer.complete(input, input.len());
let expected = &[
"--conf",
"--config",
"--help",
"--version",
"-C",
"-V",
"-c",
"-h",
];
assert_suggestions(expected, suggestions);
let input = "my-app --";
let suggestions = completer.complete(input, input.len());
let expected = &["--conf", "--config", "--help", "--version"];
assert_suggestions(expected, suggestions);
}
#[test]
fn completion_quoting() {
let mut completer = external_completion("quoting.nu");
let input = "my-app cmd-s";
let suggestions = completer.complete(input, input.len());
let expected = &["my-app cmd-single-quotes"];
assert_suggestions(expected, suggestions);
let input = "my-app --";
let suggestions = completer.complete(input, input.len());
let expected = &[
"--backslash",
"--backticks",
"--brackets",
"--double-quotes",
"--expansions",
"--help",
"--single-quotes",
"--version",
];
assert_suggestions(expected, suggestions);
}
#[test]
fn completion_aliases() {
let mut completer = external_completion("aliases.nu");
let input = "my-app -";
let suggestions = completer.complete(input, input.len());
let expected = &[
"--flag",
"--flg",
"--help",
"--opt",
"--option",
"--version",
"-F",
"-O",
"-V",
"-f",
"-h",
"-o",
];
assert_suggestions(expected, suggestions);
}
#[test]
fn completion_sub_subcommands() {
let mut completer = external_completion("sub_subcommands.nu");
let input = "my-app";
let mut suggestions = completer.complete(input, input.len());
suggestions.sort_by_key(|s| s.value.clone());
let expected = &[
"my-app",
"my-app help",
"my-app help help",
"my-app help some_cmd",
"my-app help some_cmd sub_cmd",
"my-app help test",
"my-app some_cmd",
"my-app some_cmd help",
"my-app some_cmd help help",
"my-app some_cmd help sub_cmd",
"my-app some_cmd sub_cmd",
"my-app test",
];
assert_suggestions(expected, suggestions);
let input = "my-app some_cmd sub_cmd -";
let suggestions = completer.complete(input, input.len());
let expected = &["--config", "--help", "--version", "-V", "-h"];
assert_suggestions(expected, suggestions);
let input = "my-app some_cmd sub_cmd --config ";
let suggestions = completer.complete(input, input.len());
let expected = &[
"\"Lest quotes, aren't escaped.\"",
"\"Second to trigger display of options\"",
];
assert_suggestions(expected, suggestions);
}
#[test]
fn completion_value_hint() {
let mut completer = external_completion("value_hint.nu");
let input = "my-app -";
let suggestions = completer.complete(input, input.len());
let expected = &[
"--choice",
"--cmd",
"--cmd-name",
"--dir",
"--email",
"--exe",
"--file",
"--help",
"--host",
"--other",
"--path",
"--unknown",
"--url",
"--user",
"-H",
"-c",
"-d",
"-e",
"-f",
"-h",
"-p",
"-u",
];
assert_suggestions(expected, suggestions);
let input = "my-app --choice ";
let suggestions = completer.complete(input, input.len());
let expected = &["bash", "fish", "zsh"];
assert_suggestions(expected, suggestions);
}

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mod common;
#[test]
fn basic() {
let name = "my-app";
let cmd = common::basic_command(name);
common::assert_matches_path(
"tests/snapshots/basic.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}
#[test]
fn feature_sample() {
let name = "my-app";
let cmd = common::feature_sample_command(name);
common::assert_matches_path(
"tests/snapshots/feature_sample.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}
#[test]
fn special_commands() {
let name = "my-app";
let cmd = common::special_commands_command(name);
common::assert_matches_path(
"tests/snapshots/special_commands.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}
#[test]
fn quoting() {
let name = "my-app";
let cmd = common::quoting_command(name);
common::assert_matches_path(
"tests/snapshots/quoting.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}
#[test]
fn aliases() {
let name = "my-app";
let cmd = common::aliases_command(name);
common::assert_matches_path(
"tests/snapshots/aliases.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}
#[test]
fn sub_subcommands() {
let name = "my-app";
let cmd = common::sub_subcommands_command(name);
common::assert_matches_path(
"tests/snapshots/sub_subcommands.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}
#[test]
fn value_hint() {
let name = "my-app";
let cmd = common::value_hint_command(name);
common::assert_matches_path(
"tests/snapshots/value_hint.nu",
clap_complete_nushell::Nushell,
cmd,
name,
);
}

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module completions {
# testing nushell completions
export extern my-app [
--flag(-f) # cmd flag
--flg # cmd flag
-F # cmd flag
--option(-o): string # cmd option
--opt: string # cmd option
-O: string # cmd option
positional?: string
--help(-h) # Print help
--version(-V) # Print version
]
}
use completions *

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module completions {
export extern my-app [
-c
-v
--help(-h) # Print help
]
# Subcommand
export extern "my-app test" [
-d
-c
--help(-h) # Print help
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help" [
]
# Subcommand
export extern "my-app help test" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help help" [
]
}
use completions *

39
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module completions {
def "nu-complete my-app choice" [] {
[ "first" "second" ]
}
# Tests completions
export extern my-app [
file?: string # some input file
--config(-c) # some config file
--conf # some config file
-C # some config file
choice?: string@"nu-complete my-app choice"
--help(-h) # Print help
--version(-V) # Print version
]
# tests things
export extern "my-app test" [
--case: string # the case to test
--help(-h) # Print help
--version(-V) # Print version
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help" [
]
# tests things
export extern "my-app help test" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help help" [
]
}
use completions *

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module completions {
export extern my-app [
--single-quotes # Can be 'always', 'auto', or 'never'
--double-quotes # Can be "always", "auto", or "never"
--backticks # For more information see `echo test`
--backslash # Avoid '\n'
--brackets # List packages [filter]
--expansions # Execute the shell command with $SHELL
--help(-h) # Print help
--version(-V) # Print version
]
# Can be 'always', 'auto', or 'never'
export extern "my-app cmd-single-quotes" [
--help(-h) # Print help
]
# Can be "always", "auto", or "never"
export extern "my-app cmd-double-quotes" [
--help(-h) # Print help
]
# For more information see `echo test`
export extern "my-app cmd-backticks" [
--help(-h) # Print help
]
# Avoid '\n'
export extern "my-app cmd-backslash" [
--help(-h) # Print help
]
# List packages [filter]
export extern "my-app cmd-brackets" [
--help(-h) # Print help
]
# Execute the shell command with $SHELL
export extern "my-app cmd-expansions" [
--help(-h) # Print help
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help" [
]
# Can be 'always', 'auto', or 'never'
export extern "my-app help cmd-single-quotes" [
]
# Can be "always", "auto", or "never"
export extern "my-app help cmd-double-quotes" [
]
# For more information see `echo test`
export extern "my-app help cmd-backticks" [
]
# Avoid '\n'
export extern "my-app help cmd-backslash" [
]
# List packages [filter]
export extern "my-app help cmd-brackets" [
]
# Execute the shell command with $SHELL
export extern "my-app help cmd-expansions" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help help" [
]
}
use completions *

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module completions {
def "nu-complete my-app choice" [] {
[ "first" "second" ]
}
# Tests completions
export extern my-app [
file?: string # some input file
--config(-c) # some config file
--conf # some config file
-C # some config file
choice?: string@"nu-complete my-app choice"
--help(-h) # Print help
--version(-V) # Print version
]
# tests things
export extern "my-app test" [
--case: string # the case to test
--help(-h) # Print help
--version(-V) # Print version
]
# tests other things
export extern "my-app some_cmd" [
--config: string # the other case to test
...path: string
--help(-h) # Print help
--version(-V) # Print version
]
export extern "my-app some-cmd-with-hyphens" [
--help(-h) # Print help
--version(-V) # Print version
]
export extern "my-app some-hidden-cmd" [
--help(-h) # Print help
--version(-V) # Print version
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help" [
]
# tests things
export extern "my-app help test" [
]
# tests other things
export extern "my-app help some_cmd" [
]
export extern "my-app help some-cmd-with-hyphens" [
]
export extern "my-app help some-hidden-cmd" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help help" [
]
}
use completions *

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module completions {
def "nu-complete my-app choice" [] {
[ "first" "second" ]
}
# Tests completions
export extern my-app [
file?: string # some input file
--config(-c) # some config file
--conf # some config file
-C # some config file
choice?: string@"nu-complete my-app choice"
--help(-h) # Print help
--version(-V) # Print version
]
# tests things
export extern "my-app test" [
--case: string # the case to test
--help(-h) # Print help
--version(-V) # Print version
]
# top level subcommand
export extern "my-app some_cmd" [
--help(-h) # Print help
--version(-V) # Print version
]
def "nu-complete my-app some_cmd sub_cmd config" [] {
[ "\"Lest quotes, aren't escaped.\"" "\"Second to trigger display of options\"" ]
}
# sub-subcommand
export extern "my-app some_cmd sub_cmd" [
--config: string@"nu-complete my-app some_cmd sub_cmd config" # the other case to test
--help(-h) # Print help (see more with '--help')
--version(-V) # Print version
]
# Print this message or the help of the given subcommand(s)
export extern "my-app some_cmd help" [
]
# sub-subcommand
export extern "my-app some_cmd help sub_cmd" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app some_cmd help help" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help" [
]
# tests things
export extern "my-app help test" [
]
# top level subcommand
export extern "my-app help some_cmd" [
]
# sub-subcommand
export extern "my-app help some_cmd sub_cmd" [
]
# Print this message or the help of the given subcommand(s)
export extern "my-app help help" [
]
}
use completions *

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module completions {
def "nu-complete my-app choice" [] {
[ "bash" "fish" "zsh" ]
}
export extern my-app [
--choice: string@"nu-complete my-app choice"
--unknown: string
--other: string
--path(-p): string
--file(-f): string
--dir(-d): string
--exe(-e): string
--cmd-name: string
--cmd(-c): string
command_with_args?: string
--user(-u): string
--host(-H): string
--url: string
--email: string
--help(-h) # Print help
]
}
use completions *