Further edits to help messages (#6913)

crates/nu-command/src/core_commands/alias.rs

@@ -49,10 +49,17 @@ impl Command for Alias {
     }
 
     fn examples(&self) -> Vec<Example> {
-        vec![Example {
+        vec![
+            Example {
                 description: "Alias ll to ls -l",
                 example: "alias ll = ls -l",
                 result: None,
-        }]
+            },
+            Example {
+                description: "Make an alias that makes a list of all custom commands",
+                example: "alias customs = ($nu.scope.commands | where is_custom | get command)",
+                result: None,
+            },
+        ]
     }
 }

crates/nu-command/src/core_commands/echo.rs

@@ -2,7 +2,7 @@ use nu_engine::CallExt;
 use nu_protocol::ast::Call;
 use nu_protocol::engine::{Command, EngineState, Stack};
 use nu_protocol::{
-    Category, Example, ListStream, PipelineData, ShellError, Signature, SyntaxShape, Value,
+    Category, Example, ListStream, PipelineData, ShellError, Signature, Span, SyntaxShape, Value,
 };
 
 #[derive(Clone)]
@@ -14,7 +14,7 @@ impl Command for Echo {
     }
 
     fn usage(&self) -> &str {
-        "Echo the arguments back to the user."
+        "Returns its arguments, ignoring the piped-in value."
     }
 
     fn signature(&self) -> Signature {
@@ -24,7 +24,9 @@ impl Command for Echo {
     }
 
     fn extra_usage(&self) -> &str {
-        "Unlike `print`, this command returns an actual value that will be passed to the next command of the pipeline."
+        r#"When given no arguments, it returns an empty string. When given one argument,
+it returns it. Otherwise, it returns a list of the arguments. There is usually
+little reason to use this over just writing the values as-is."#
     }
 
     fn run(
@@ -61,13 +63,17 @@ impl Command for Echo {
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {
-                description: "Put a hello message in the pipeline",
-                example: "echo 'hello'",
-                result: Some(Value::test_string("hello")),
+                description: "Put a list of numbers in the pipeline. This is the same as [1 2 3].",
+                example: "echo 1 2 3",
+                result: Some(Value::List {
+                    vals: vec![Value::test_int(1), Value::test_int(2), Value::test_int(3)],
+                    span: Span::test_data(),
+                }),
             },
             Example {
-                description: "Print the value of the special '$nu' variable",
-                example: "echo $nu",
+                description:
+                    "Returns the piped-in value, by using the special $in variable to obtain it.",
+                example: "echo $in",
                 result: None,
             },
         ]

crates/nu-command/src/core_commands/overlay/hide.rs

@@ -105,7 +105,7 @@ impl Command for OverlayHide {
             },
             Example {
                 description: "Hide an overlay created from a file",
-                example: r#"echo 'export alias f = "foo"' | save spam.nu
+                example: r#"'export alias f = "foo"' | save spam.nu
     overlay use spam.nu
     overlay hide spam"#,
                 result: None,

crates/nu-command/src/core_commands/overlay/use_.rs

@@ -183,14 +183,14 @@ impl Command for OverlayUse {
             },
             Example {
                 description: "Create an overlay with a prefix",
-                example: r#"echo 'export def foo { "foo" }'
+                example: r#"'export def foo { "foo" }'
     overlay use --prefix spam
     spam foo"#,
                 result: None,
             },
             Example {
                 description: "Create an overlay from a file",
-                example: r#"echo 'export-env { let-env FOO = "foo" }' | save spam.nu
+                example: r#"'export-env { let-env FOO = "foo" }' | save spam.nu
     overlay use spam.nu
     $env.FOO"#,
                 result: None,

crates/nu-command/src/database/commands/into_db.rs

@@ -15,13 +15,12 @@ impl Command for ToDataBase {
     }
 
     fn usage(&self) -> &str {
-        "Converts into an open db connection"
+        "Converts the input into an open db connection"
     }
 
     fn extra_usage(&self) -> &str {
-        "This function is used as type hint for parser, specially if the query is not started with 'from table'"
+        "This function is used as a hint to Nushell to optimize the pipeline for database queries."
     }
-
     fn signature(&self) -> Signature {
         Signature::build(self.name())
             .input_type(Type::Any)
@@ -35,7 +34,7 @@ impl Command for ToDataBase {
 
     fn examples(&self) -> Vec<Example> {
         vec![Example {
-            description: "Converts an open file into a db object",
+            description: "Converts an open file into a db object.",
             example: "open db.sqlite | into db",
             result: None,
         }]

crates/nu-command/src/env/with_env.rs

@@ -63,7 +63,7 @@ impl Command for WithEnv {
             },
             Example {
                 description: "Set by row(e.g. `open x.json` or `from json`)",
-                example: r#"echo '{"X":"Y","W":"Z"}'|from json|with-env $in { echo $env.X $env.W }"#,
+                example: r#"'{"X":"Y","W":"Z"}'|from json|with-env $in { echo $env.X $env.W }"#,
                 result: None,
             },
         ]

crates/nu-command/src/filesystem/ls.rs

@@ -42,12 +42,12 @@ impl Command for Ls {
             .switch("all", "Show hidden files", Some('a'))
             .switch(
                 "long",
-                "List all available columns for each entry",
+                "Get all available columns for each entry (slower; columns are platform-dependent)",
                 Some('l'),
             )
             .switch(
                 "short-names",
-                "Only print the file names and not the path",
+                "Only print the file names, and not the path",
                 Some('s'),
             )
             .switch("full-paths", "display paths as absolute paths", Some('f'))

crates/nu-command/src/filesystem/save.rs

@@ -265,17 +265,17 @@ impl Command for Save {
         vec![
             Example {
                 description: "Save a string to foo.txt in the current directory",
-                example: r#"echo 'save me' | save foo.txt"#,
+                example: r#"'save me' | save foo.txt"#,
                 result: None,
             },
             Example {
                 description: "Append a string to the end of foo.txt",
-                example: r#"echo 'append me' | save --append foo.txt"#,
+                example: r#"'append me' | save --append foo.txt"#,
                 result: None,
             },
             Example {
                 description: "Save a record to foo.json in the current directory",
-                example: r#"echo { a: 1, b: 2 } | save foo.json"#,
+                example: r#"{ a: 1, b: 2 } | save foo.json"#,
                 result: None,
             },
             Example {

crates/nu-command/src/filters/append.rs

@@ -24,6 +24,13 @@ impl Command for Append {
         "Append any number of rows to a table."
     }
 
+    fn extra_usage(&self) -> &str {
+        r#"Be aware that this command 'unwraps' lists passed to it. So, if you pass a variable to it,
+and you want the variable's contents to be appended without being unwrapped, it's wise to
+pre-emptively wrap the variable in a list, like so: `append [$val]`. This way, `append` will
+only unwrap the outer list, and leave the variable's contents untouched."#
+    }
+
     fn search_terms(&self) -> Vec<&str> {
         vec!["add", "concatenate"]
     }

crates/nu-command/src/filters/compact.rs

@@ -40,7 +40,7 @@ impl Command for Compact {
         vec![
             Example {
                 description: "Filter out all records where 'Hello' is null (returns nothing)",
-                example: r#"echo [["Hello" "World"]; [$nothing 3]]| compact Hello"#,
+                example: r#"[["Hello" "World"]; [null 3]]| compact Hello"#,
                 result: Some(Value::List {
                     vals: vec![],
                     span: Span::test_data(),
@@ -48,7 +48,7 @@ impl Command for Compact {
             },
             Example {
                 description: "Filter out all records where 'World' is null (Returns the table)",
-                example: r#"echo [["Hello" "World"]; [$nothing 3]]| compact World"#,
+                example: r#"[["Hello" "World"]; [null 3]]| compact World"#,
                 result: Some(Value::List {
                     vals: vec![Value::Record {
                         cols: vec!["Hello".into(), "World".into()],
@@ -60,7 +60,7 @@ impl Command for Compact {
             },
             Example {
                 description: "Filter out all instances of nothing from a list (Returns [1,2])",
-                example: r#"echo [1, $nothing, 2] | compact"#,
+                example: r#"[1, null, 2] | compact"#,
                 result: Some(Value::List {
                     vals: vec![Value::test_int(1), Value::test_int(2)],
                     span: Span::test_data(),

crates/nu-command/src/filters/default.rs

@@ -50,8 +50,8 @@ impl Command for Default {
                 result: None, // Some(Value::test_string("abc")),
             },
             Example {
-                description: "Default the `$nothing` value in a list",
-                example: "[1, 2, $nothing, 4] | default 3",
+                description: "Replace the `null` value in a list",
+                example: "[1, 2, null, 4] | default 3",
                 result: Some(Value::List {
                     vals: vec![
                         Value::test_int(1),

crates/nu-command/src/filters/each.rs

@@ -16,7 +16,17 @@ impl Command for Each {
     }
 
     fn usage(&self) -> &str {
-        "Run a block on each element of input"
+        "Run a block on each row of input"
+    }
+
+    fn extra_usage(&self) -> &str {
+        r#"Since tables are lists of records, passing a table into 'each' will
+iterate over each record, not necessarily each cell within it.
+
+Avoid passing single records to this command. Since a record is a
+one-row structure, 'each' will only run once, behaving similar to 'do'.
+To iterate over a record's values, try converting it to a table
+with 'transpose' first."#
     }
 
     fn search_terms(&self) -> Vec<&str> {

crates/nu-command/src/filters/each_while.rs

@@ -15,7 +15,7 @@ impl Command for EachWhile {
     }
 
     fn usage(&self) -> &str {
-        "Run a block on each element of input until a $nothing is found"
+        "Run a block on each element of input until a null is found"
     }
 
     fn search_terms(&self) -> Vec<&str> {
@@ -47,7 +47,7 @@ impl Command for EachWhile {
 
         vec![
             Example {
-                example: "[1 2 3] | each while { |it| if $it < 3 {$it} else {$nothing} }",
+                example: "[1 2 3] | each while { |it| if $it < 3 { $it } else { null } }",
                 description: "Multiplies elements in list",
                 result: Some(Value::List {
                     vals: stream_test_1,
@@ -55,7 +55,7 @@ impl Command for EachWhile {
                 }),
             },
             Example {
-                example: r#"[1 2 3] | each while -n { |it| if $it.item < 2 { $"value ($it.item) at ($it.index)!"} else { $nothing } }"#,
+                example: r#"[1 2 3] | each while -n { |it| if $it.item < 2 { $"value ($it.item) at ($it.index)!"} else { null } }"#,
                 description: "Iterate over each element, print the matching value and its index",
                 result: Some(Value::List {
                     vals: vec![Value::String {

crates/nu-command/src/filters/find.rs

@@ -67,7 +67,7 @@ impl Command for Find {
             },
             Example {
                 description: "Search for a term in a string",
-                example: r#"echo Cargo.toml | find toml"#,
+                example: r#"'Cargo.toml' | find toml"#,
                 result: Some(Value::test_string("Cargo.toml".to_owned()))
             },
             Example {

crates/nu-command/src/filters/prepend.rs

@@ -28,6 +28,13 @@ impl Command for Prepend {
         "Prepend any number of rows to a table."
     }
 
+    fn extra_usage(&self) -> &str {
+        r#"Be aware that this command 'unwraps' lists passed to it. So, if you pass a variable to it,
+and you want the variable's contents to be prepended without being unwrapped, it's wise to
+pre-emptively wrap the variable in a list, like so: `prepend [$val]`. This way, `prepend` will
+only unwrap the outer list, and leave the variable's contents untouched."#
+    }
+
     fn search_terms(&self) -> Vec<&str> {
         vec!["add", "concatenate"]
     }

crates/nu-command/src/filters/shuffle.rs

@@ -41,7 +41,7 @@ impl Command for Shuffle {
     fn examples(&self) -> Vec<Example> {
         vec![Example {
             description: "Shuffle rows randomly (execute it several times and see the difference)",
-            example: r#"echo [[version patch]; [1.0.0 false] [3.0.1 true] [2.0.0 false]] | shuffle"#,
+            example: r#"[[version patch]; [1.0.0 false] [3.0.1 true] [2.0.0 false]] | shuffle"#,
             result: None,
         }]
     }

crates/nu-command/src/formats/from/tsv.rs

@@ -48,27 +48,27 @@ impl Command for FromTsv {
         vec![
             Example {
                 description: "Create a tsv file with header columns and open it",
-                example: r#"echo $'c1(char tab)c2(char tab)c3(char nl)1(char tab)2(char tab)3' | save tsv-data | open tsv-data | from tsv"#,
+                example: r#"$'c1(char tab)c2(char tab)c3(char nl)1(char tab)2(char tab)3' | save tsv-data | open tsv-data | from tsv"#,
                 result: None,
             },
             Example {
                 description: "Create a tsv file without header columns and open it",
-                example: r#"echo $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv -n"#,
+                example: r#"$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv -n"#,
                 result: None,
             },
             Example {
                 description: "Create a tsv file without header columns and open it, removing all unnecessary whitespaces",
-                example: r#"echo $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim all"#,
+                example: r#"$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim all"#,
                 result: None,
             },
             Example {
                 description: "Create a tsv file without header columns and open it, removing all unnecessary whitespaces in the header names",
-                example: r#"echo $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim headers"#,
+                example: r#"$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim headers"#,
                 result: None,
             },
             Example {
                 description: "Create a tsv file without header columns and open it, removing all unnecessary whitespaces in the field values",
-                example: r#"echo $'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim fields"#,
+                example: r#"$'a1(char tab)b1(char tab)c1(char nl)a2(char tab)b2(char tab)c2' | save tsv-data | open tsv-data | from tsv --trim fields"#,
                 result: None,
             },
         ]

crates/nu-command/src/platform/ansi/ansi_.rs

@@ -285,14 +285,14 @@ Format: #
             Example {
                 description:
                     "Use ansi to color text (rb = red bold, gb = green bold, pb = purple bold)",
-                example: r#"echo [(ansi rb) Hello " " (ansi gb) Nu " " (ansi pb) World (ansi reset)] | str join"#,
+                example: r#"$'(ansi rb)Hello (ansi gb)Nu (ansi pb)World(ansi reset)'"#,
                 result: Some(Value::test_string(
                     "\u{1b}[1;31mHello \u{1b}[1;32mNu \u{1b}[1;35mWorld\u{1b}[0m",
                 )),
             },
             Example {
                 description: "Use ansi to color text (italic bright yellow on red 'Hello' with green bold 'Nu' and purple bold 'World')",
-                example: r#"echo [(ansi -e '3;93;41m') Hello (ansi reset) " " (ansi gb) Nu " " (ansi pb) World (ansi reset)] | str join"#,
+                example: r#"[(ansi -e '3;93;41m') Hello (ansi reset) " " (ansi gb) Nu " " (ansi pb) World (ansi reset)] | str join"#,
                 result: Some(Value::test_string(
                     "\u{1b}[3;93;41mHello\u{1b}[0m \u{1b}[1;32mNu \u{1b}[1;35mWorld\u{1b}[0m",
                 )),

crates/nu-command/src/platform/ansi/strip.rs

@@ -40,7 +40,7 @@ impl Command for SubCommand {
     fn examples(&self) -> Vec<Example> {
         vec![Example {
             description: "Strip ANSI escape sequences from a string",
-            example: r#"echo [ (ansi green) (ansi cursor_on) "hello" ] | str join | ansi strip"#,
+            example: r#"$'(ansi green)(ansi cursor_on)hello' | ansi strip"#,
             result: Some(Value::test_string("hello")),
         }]
     }

crates/nu-command/src/strings/char_.rs

@@ -184,8 +184,8 @@ impl Command for Char {
                 result: Some(Value::test_string("\n")),
             },
             Example {
-                description: "Output prompt character, newline and a hamburger character",
-                example: r#"echo [(char prompt) (char newline) (char hamburger)] | str join"#,
+                description: "Output prompt character, newline and a hamburger menu character",
+                example: r#"(char prompt) + (char newline) + (char hamburger)"#,
                 result: Some(Value::test_string("\u{25b6}\n\u{2261}")),
             },
             Example {

crates/nu-command/src/strings/encode_decode/encode.rs

@@ -41,7 +41,7 @@ documentation link at https://docs.rs/encoding_rs/0.8.28/encoding_rs/#statics"#
     fn examples(&self) -> Vec<Example> {
         vec![Example {
             description: "Encode an UTF-8 string into Shift-JIS",
-            example: r#"echo "負けると知って戦うのが、遥かに美しいのだ" | encode shift-jis"#,
+            example: r#""負けると知って戦うのが、遥かに美しいのだ" | encode shift-jis"#,
             result: Some(Value::Binary {
                 val: vec![
                     0x95, 0x89, 0x82, 0xaf, 0x82, 0xe9, 0x82, 0xc6, 0x92, 0x6d, 0x82, 0xc1, 0x82,

crates/nu-command/src/strings/str_/collect.rs

@@ -21,7 +21,7 @@ impl Command for StrCollect {
                 SyntaxShape::String,
                 "optional separator to use when creating string",
             )
-            .category(Category::Strings)
+            .category(Category::Deprecated)
     }
 
     fn usage(&self) -> &str {

crates/nu-command/src/viewers/table.rs

@@ -165,7 +165,7 @@ impl Command for Table {
             },
             Example {
                 description: "Render data in table view",
-                example: r#"echo [[a b]; [1 2] [3 4]] | table"#,
+                example: r#"[[a b]; [1 2] [3 4]] | table"#,
                 result: Some(Value::List {
                     vals: vec![
                         Value::Record {
@@ -184,7 +184,7 @@ impl Command for Table {
             },
             Example {
                 description: "Render data in table view (expanded)",
-                example: r#"echo [[a b]; [1 2] [2 [4 4]]] | table --expand"#,
+                example: r#"[[a b]; [1 2] [2 [4 4]]] | table --expand"#,
                 result: Some(Value::List {
                     vals: vec![
                         Value::Record {
@@ -203,7 +203,7 @@ impl Command for Table {
             },
             Example {
                 description: "Render data in table view (collapsed)",
-                example: r#"echo [[a b]; [1 2] [2 [4 4]]] | table --collapse"#,
+                example: r#"[[a b]; [1 2] [2 [4 4]]] | table --collapse"#,
                 result: Some(Value::List {
                     vals: vec![
                         Value::Record {
@@ -774,6 +774,7 @@ fn convert_to_table(
 }
 
 #[allow(clippy::too_many_arguments)]
+#[allow(clippy::into_iter_on_ref)]
 fn convert_to_table2<'a>(
     row_offset: usize,
     input: impl Iterator<Item = &'a Value> + ExactSizeIterator + Clone,

crates/nu-command/tests/commands/get.rs

@@ -208,7 +208,7 @@ fn errors_fetching_by_index_out_of_bounds() {
 fn quoted_column_access() {
     let actual = nu!(
         cwd: "tests/fixtures/formats",
-        r#"echo '[{"foo bar": {"baz": 4}}]' | from json | get "foo bar".baz.0 "#
+        r#"'[{"foo bar": {"baz": 4}}]' | from json | get "foo bar".baz.0 "#
     );
 
     assert_eq!(actual.out, "4");

crates/nu-command/tests/commands/save.rs

@@ -12,7 +12,7 @@ fn writes_out_csv() {
 
         nu!(
             cwd: dirs.root(),
-            r#"echo [[name, version, description, license, edition]; [nu, "0.14", "A new type of shell", "MIT", "2018"]] | save save_test_2/cargo_sample.csv"#,
+            r#"[[name, version, description, license, edition]; [nu, "0.14", "A new type of shell", "MIT", "2018"]] | save save_test_2/cargo_sample.csv"#,
         );
 
         let actual = file_contents(expected_file);
@@ -30,7 +30,7 @@ fn writes_out_list() {
 
         nu!(
             cwd: dirs.root(),
-            r#"echo [a b c d] | save save_test_3/list_sample.txt"#,
+            r#"[a b c d] | save save_test_3/list_sample.txt"#,
         );
 
         let actual = file_contents(expected_file);
@@ -48,7 +48,7 @@ fn save_append_will_create_file_if_not_exists() {
 
         nu!(
             cwd: dirs.root(),
-            r#"echo hello | save --raw --append save_test_3/new-file.txt"#,
+            r#"'hello' | save --raw --append save_test_3/new-file.txt"#,
         );
 
         let actual = file_contents(expected_file);
@@ -74,7 +74,7 @@ fn save_append_will_not_overwrite_content() {
 
         nu!(
             cwd: dirs.root(),
-            r#"echo world | save --append save_test_4/new-file.txt"#,
+            r#"'world' | save --append save_test_4/new-file.txt"#,
         );
 
         let actual = file_contents(expected_file);

crates/nu-command/tests/commands/where_.rs

@@ -16,7 +16,7 @@ fn filters_by_unit_size_comparison() {
 fn filters_with_nothing_comparison() {
     let actual = nu!(
         cwd: "tests/fixtures/formats",
-        r#"echo '[{"foo": 3}, {"foo": null}, {"foo": 4}]' | from json | get foo | compact | where $it > 1 | math sum"#
+        r#"'[{"foo": 3}, {"foo": null}, {"foo": 4}]' | from json | get foo | compact | where $it > 1 | math sum"#
     );
 
     assert_eq!(actual.out, "7");
@@ -26,7 +26,7 @@ fn filters_with_nothing_comparison() {
 fn where_in_table() {
     let actual = nu!(
         cwd: "tests/fixtures/formats",
-        r#"echo '[{"name": "foo", "size": 3}, {"name": "foo", "size": 2}, {"name": "bar", "size": 4}]' | from json | where name in ["foo"] | get size | math sum"#
+        r#"'[{"name": "foo", "size": 3}, {"name": "foo", "size": 2}, {"name": "bar", "size": 4}]' | from json | where name in ["foo"] | get size | math sum"#
     );
 
     assert_eq!(actual.out, "5");
@@ -36,7 +36,7 @@ fn where_in_table() {
 fn where_not_in_table() {
     let actual = nu!(
         cwd: "tests/fixtures/formats",
-        r#"echo '[{"name": "foo", "size": 3}, {"name": "foo", "size": 2}, {"name": "bar", "size": 4}]' | from json | where name not-in ["foo"] | get size | math sum"#
+        r#"'[{"name": "foo", "size": 3}, {"name": "foo", "size": 2}, {"name": "bar", "size": 4}]' | from json | where name not-in ["foo"] | get size | math sum"#
     );
 
     assert_eq!(actual.out, "4");

crates/nu-command/tests/format_conversions/html.rs

@@ -57,7 +57,7 @@ fn test_cd_html_color_flag_dark_false() {
     );
     assert_eq!(
         actual.out,
-        r"<html><style>body { background-color:white;color:black; }</style><body>Change directory.<br><br>Usage:<br>  &gt; cd (path) <br><br>Flags:<br>  -h, --help<br>      Display this help message<br><br>Parameters:<br>  (optional) path &lt;Directory&gt;: the path to change to<br><br>Examples:<br>  Change to your home directory<br>  &gt; <span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span><span style='color:#037979;'>~<span style='color:black;font-weight:normal;'><br><br>  Change to a directory via abbreviations<br>  &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span><span style='color:#037979;'>d/s/9<span style='color:black;font-weight:normal;'><br><br>  Change to the previous working directory ($OLDPWD)<br>  &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span><span style='color:#037979;'>-<span style='color:black;font-weight:normal;'><br><br></body></html></span></span>"
+        r"<html><style>body { background-color:white;color:black; }</style><body>Change directory.<br><br>Usage:<br>  &gt; cd (path) <br><br>Flags:<br>  -h, --help<br>      Display the help message for this command<br><br>Parameters:<br>  (optional) path &lt;Directory&gt;: the path to change to<br><br>Examples:<br>  Change to your home directory<br>  &gt; <span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span><span style='color:#037979;'>~<span style='color:black;font-weight:normal;'><br><br>  Change to a directory via abbreviations<br>  &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span><span style='color:#037979;'>d/s/9<span style='color:black;font-weight:normal;'><br><br>  Change to the previous working directory ($OLDPWD)<br>  &gt; </span><span style='color:#037979;font-weight:bold;'>cd<span style='color:black;font-weight:normal;'> </span></span></span><span style='color:#037979;'>-<span style='color:black;font-weight:normal;'><br><br></body></html></span></span>"
     );
 }
 
@@ -72,6 +72,6 @@ fn test_no_color_flag() {
     );
     assert_eq!(
         actual.out,
-        r"<html><style>body { background-color:white;color:black; }</style><body>Change directory.<br><br>Usage:<br>  &gt; cd (path) <br><br>Flags:<br>  -h, --help - Display this help message<br><br>Parameters:<br>  (optional) path &lt;Directory&gt;: the path to change to<br><br>Examples:<br>  Change to your home directory<br>  &gt; cd ~<br><br>  Change to a directory via abbreviations<br>  &gt; cd d/s/9<br><br>  Change to the previous working directory ($OLDPWD)<br>  &gt; cd -<br><br></body></html>"
+        r"<html><style>body { background-color:white;color:black; }</style><body>Change directory.<br><br>Usage:<br>  &gt; cd (path) <br><br>Flags:<br>  -h, --help - Display the help message for this command<br><br>Parameters:<br>  (optional) path &lt;Directory&gt;: the path to change to<br><br>Examples:<br>  Change to your home directory<br>  &gt; cd ~<br><br>  Change to a directory via abbreviations<br>  &gt; cd d/s/9<br><br>  Change to the previous working directory ($OLDPWD)<br>  &gt; cd -<br><br></body></html>"
     );
 }

crates/nu-protocol/src/signature.rs

@@ -158,7 +158,7 @@ impl Signature {
             long: "help".into(),
             short: Some('h'),
             arg: None,
-            desc: "Display this help message".into(),
+            desc: "Display the help message for this command".into(),
             required: false,
             var_id: None,
             default_value: None,

crates/nu-utils/src/sample_config/default_config.nu

@@ -61,7 +61,7 @@ module completions {
     --no-show-forced-updates                      # Don't check if a branch is force-updated
     -4                                            # Use IPv4 addresses, ignore IPv6 addresses
     -6                                            # Use IPv6 addresses, ignore IPv4 addresses
-    --help                                        # Display this help message
+    --help                                        # Display the help message for this command
   ]
 
   # Check out git branches and files
@@ -88,7 +88,7 @@ module completions {
     -b: string                                      # create and checkout a new branch
     -B: string                                      # create/reset and checkout a branch
     -l                                              # create reflog for new branch
-    --help                                          # Display this help message
+    --help                                          # Display the help message for this command
   ]
 
   # Push changes
@@ -120,7 +120,7 @@ module completions {
     --tags                                          # push tags (can't be used with --all or --mirror)
     --thin                                          # use thin pack
     --verbose(-v)                                   # be more verbose
-    --help                                          # Display this help message
+    --help                                          # Display the help message for this command
   ]
 }
 
@@ -243,7 +243,7 @@ let light_theme = {
 
 # The default config record. This is where much of your global configuration is setup.
 let-env config = {
-  external_completer: $nothing # check 'carapace_completer' above to as example
+  external_completer: null # check 'carapace_completer' above to as example
   filesize_metric: false # true => (KB, MB, GB), false => (KiB, MiB, GiB)
   table_mode: rounded # basic, compact, compact_double, light, thin, with_love, rounded, reinforced, heavy, none, other
   use_ls_colors: true

crates/nu_plugin_python/nu_plugin_python_example.py

@@ -77,7 +77,7 @@ def signatures():
                         "short": "h",
                         "arg": None,
                         "required": False,
-                        "desc": "Display this help message",
+                        "desc": "Display the help message for this command",
                         "var_id": None
                     },
                     {

src/tests/test_custom_commands.rs

@@ -121,7 +121,10 @@ fn allow_missing_optional_params() -> TestResult {
 
 #[test]
 fn help_present_in_def() -> TestResult {
-    run_test_contains("def foo [] {}; help foo;", "Display this help message")
+    run_test_contains(
+        "def foo [] {}; help foo;",
+        "Display the help message for this command",
+    )
 }
 
 #[test]

src/tests/test_engine.rs

@@ -53,7 +53,7 @@ fn in_and_if_else() -> TestResult {
 
 #[test]
 fn help_works_with_missing_requirements() -> TestResult {
-    run_test(r#"each --help | lines | length"#, "29")
+    run_test(r#"each --help | lines | length"#, "37")
 }
 
 #[test]

src/tests/test_table_operations.rs

@@ -251,7 +251,7 @@ fn length_for_rows() -> TestResult {
 #[test]
 fn length_defaulted_columns() -> TestResult {
     run_test(
-        r#"echo [[name, age]; [test, 10]] | default 11 age | get 0 | columns | length"#,
+        r#"[[name, age]; [test, 10]] | default 11 age | get 0 | columns | length"#,
         "2",
     )
 }

tests/shell/pipeline/commands/internal.rs

@@ -662,7 +662,7 @@ fn argument_subexpression_reports_errors() {
 fn can_process_one_row_from_internal_and_pipes_it_to_stdin_of_external() {
     let actual = nu!(
         cwd: ".",
-        r#"echo "nushelll" | nu --testbin chop"#
+        r#""nushelll" | nu --testbin chop"#
     );
 
     assert_eq!(actual.out, "nushell");
@@ -1232,7 +1232,7 @@ mod parse {
         > debug {flags}
 
         flags:
-        -h, --help: Display this help message
+        -h, --help: Display the help message for this command
         -r, --raw: Prints the raw value representation.
     */