Edited help text and examples in explore for readability (#7324)

# Description

* Various help messages were edited for clarity/grammar/etc.
* Some examples were made more interesting or relevant

# User-Facing Changes

See above.

# Tests + Formatting

Don't forget to add tests that cover your changes.

Make sure you've run and fixed any issues with these commands:

- `cargo fmt --all -- --check` to check standard code formatting (`cargo
fmt --all` applies these changes)
- `cargo clippy --workspace -- -D warnings -D clippy::unwrap_used -A
clippy::needless_collect` to check that you're using the standard code
style
- `cargo test --workspace` to check that all tests pass

# After Submitting

If your PR had any user-facing changes, update [the
documentation](https://github.com/nushell/nushell.github.io) after the
PR is merged, if necessary. This will help us keep the docs up to date.

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

@@ -31,16 +31,20 @@ impl Command for Explore {
             .named(
                 "head",
                 SyntaxShape::Boolean,
-                "Setting it to false makes it doesn't show column headers",
+                "Show or hide column headers (default true)",
                 None,
             )
-            .switch("index", "A flag to show a index beside the rows", Some('i'))
+            .switch("index", "Show row indexes when viewing a list", Some('i'))
             .switch(
                 "reverse",
-                "Makes it start from the end. (like `more`)",
+                "Start with the viewport scrolled to the bottom",
                 Some('r'),
             )
-            .switch("peek", "Return a last seen cell content", Some('p'))
+            .switch(
+                "peek",
+                "When quitting, output the value of the cell the cursor was on",
+                Some('p'),
+            )
             .category(Category::Viewers)
     }
 
@@ -90,23 +94,24 @@ impl Command for Explore {
     fn examples(&self) -> Vec<Example> {
         vec![
             Example {
-                description: "List the files in current directory, an looking at them via explore.",
-                example: r#"ls | explore"#,
+                description: "Explore the system information record",
+                example: r#"sys | explore"#,
                 result: None,
             },
             Example {
-                description: "Inspect system information (explore with index).",
-                example: r#"sys | explore -i"#,
+                description: "Explore the output of `ls` without column names",
+                example: r#"ls | explore --head false"#,
                 result: None,
             },
             Example {
-                description: "Inspect $nu information (explore with no column names).",
-                example: r#"$nu | explore --head false"#,
+                description: "Explore a list of Markdown files' contents, with row indexes",
+                example: r#"glob *.md | each { open } | explore -i"#,
                 result: None,
             },
             Example {
-                description: "Inspect $nu information and return an entity where you've stopped.",
-                example: r#"$nu | explore --peek"#,
+                description:
+                    "Explore a JSON file, then save the last visited sub-structure to a file",
+                example: r#"open file.json | explore -p | to json | save part.json"#,
                 result: None,
             },
         ]

crates/nu-explore/src/commands/help.rs

@@ -64,16 +64,16 @@ impl ViewCommand for HelpCmd {
     fn help(&self) -> Option<HelpManual> {
         Some(HelpManual {
             name: "help",
-            description: "Looks up a help information about a command or a `explore`",
+            description: "Explore the help page for `explore`",
             arguments: vec![],
             examples: vec![
                 HelpExample {
                     example: "help",
-                    description: "Open a help information about the `explore`",
+                    description: "Open the help page for all of `explore`",
                 },
                 HelpExample {
                     example: "help nu",
-                    description: "Find a help list of `nu` command",
+                    description: "Open the help page for the `nu` explore command",
                 },
                 HelpExample {
                     example: "help help",
@@ -161,20 +161,20 @@ fn help_frame_data(
 
     #[rustfmt::skip]
     let shortcuts = [
-        (":",      "view",    commands,  "Run a command"),
-        ("/",      "view",    null!(),   "Search via pattern"),
-        ("?",      "view",    null!(),   "Search via pattern but results will be reversed when you press <n>"),
-        ("n",      "view",    null!(),   "Gets to the next found element in search"),
-        ("i",      "view",    null!(),   "Turn on a cursor mode so you can inspect values"),
-        ("t",      "view",    null!(),   "Transpose table, so columns became rows and vice versa"),
-        ("Up",     "",        null!(),   "Moves to an element above"),
-        ("Down",   "",        null!(),   "Moves to an element bellow"),
-        ("Left",   "",        null!(),   "Moves to an element to the left"),
-        ("Right",  "",        null!(),   "Moves to an element to the right"),
-        ("PgDown", "view",    null!(),   "Moves to an a bunch of elements bellow"),
-        ("PgUp",   "view",    null!(),   "Moves to an a bunch of elements above"),
-        ("Esc",    "",        null!(),   "Exits a cursor mode. Exists an expected element."),
-        ("Enter",  "cursor",  null!(),   "Inspect a chosen element"),
+        (":",      "view",    commands,  "Run an explore command (explore the 'information' cell of this row to list commands)"),
+        ("/",      "view",    null!(),   "Search for a pattern"),
+        ("?",      "view",    null!(),   "Search for a pattern, but the <n> key now scrolls to the previous result"),
+        ("n",      "view",    null!(),   "When searching, scroll to the next search result"),
+        ("i",      "view",    null!(),   "Enters cursor mode to inspect individual cells"),
+        ("t",      "view",    null!(),   "Transpose table, so that columns become rows and vice versa"),
+        ("Up",     "",        null!(),   "Moves the cursor or viewport one row up"),
+        ("Down",   "",        null!(),   "Moves the cursor or viewport one row down"),
+        ("Left",   "",        null!(),   "Moves the cursor or viewport one column left"),
+        ("Right",  "",        null!(),   "Moves the cursor or viewport one column right"),
+        ("PgDown", "view",    null!(),   "Moves the cursor or viewport one page of rows down"),
+        ("PgUp",   "view",    null!(),   "Moves the cursor or viewport one page of rows up"),
+        ("Esc",    "",        null!(),   "Exits cursor mode. Exits the currently explored data."),
+        ("Enter",  "cursor",  null!(),   "In cursor mode, explore the data of the selected cell"),
     ];
 
     let headers = headers.iter().map(|s| s.to_string()).collect();

crates/nu-explore/src/commands/nu.rs

@@ -44,16 +44,17 @@ impl ViewCommand for NuCmd {
     fn help(&self) -> Option<HelpManual> {
         Some(HelpManual {
             name: "nu",
-            description: "Run a nu command. You can use a presented table as an input",
+            description:
+                "Run a Nushell command. The data currently being explored is piped into it.",
             arguments: vec![],
             examples: vec![
                 HelpExample {
                     example: "where type == 'file'",
-                    description: "Filter data to get only entries with a type being a 'file'",
+                    description: "Filter data to show only rows whose type is 'file'",
                 },
                 HelpExample {
-                    example: "get scope | get examples",
-                    description: "Get a inner values",
+                    example: "get scope.examples",
+                    description: "Navigate to a deeper value inside the data",
                 },
                 HelpExample {
                     example: "open Cargo.toml",

crates/nu-explore/src/commands/preview.rs

@@ -40,7 +40,8 @@ impl ViewCommand for PreviewCmd {
     fn help(&self) -> Option<HelpManual> {
         Some(HelpManual {
             name: "preview",
-            description: "Preview current value/table if any is currently in use",
+            description:
+                "View the currently selected cell's data using the `table` Nushell command",
             arguments: vec![],
             examples: vec![],
         })

crates/nu-explore/src/commands/quit.rs

@@ -28,7 +28,7 @@ impl SimpleCommand for QuitCmd {
     fn help(&self) -> Option<HelpManual> {
         Some(HelpManual {
             name: "quit",
-            description: "Quit",
+            description: "Quit and return to Nushell",
             arguments: vec![],
             examples: vec![],
         })

crates/nu-explore/src/commands/try.rs

@@ -40,11 +40,11 @@ impl ViewCommand for TryCmd {
     fn help(&self) -> Option<HelpManual> {
         Some(HelpManual {
             name: "try",
-            description: "Opens a dynamic REPL to run nu commands",
+            description: "Opens a panel in which to run Nushell commands and explore their output",
             arguments: vec![],
             examples: vec![HelpExample {
                 example: "try open Cargo.toml",
-                description: "Optionally you can provide a command which will be run right away",
+                description: "Optionally, you can provide a command which will be run immediately",
             }],
         })
     }

crates/nu-explore/src/pager.rs

@@ -329,7 +329,7 @@ fn render_status_bar(f: &mut Frame, area: Rect, report: Report, theme: &StyleCon
 }
 
 fn report_msg_style(report: &Report, theme: &StyleConfig, style: NuStyle) -> NuStyle {
-    if matches!(report.level, Severentity::Info) {
+    if matches!(report.level, Severity::Info) {
         style
     } else {
         report_level_style(report.level, theme)
@@ -834,11 +834,11 @@ impl Widget for StatusBar {
     }
 }
 
-fn report_level_style(level: Severentity, theme: &StyleConfig) -> NuStyle {
+fn report_level_style(level: Severity, theme: &StyleConfig) -> NuStyle {
     match level {
-        Severentity::Info => theme.status_info,
-        Severentity::Warn => theme.status_warn,
-        Severentity::Err => theme.status_error,
+        Severity::Info => theme.status_info,
+        Severity::Warn => theme.status_warn,
+        Severity::Err => theme.status_error,
     }
 }
 
@@ -935,13 +935,13 @@ pub struct ViewInfo {
 #[derive(Debug, Clone)]
 pub struct Report {
     pub message: String,
-    pub level: Severentity,
+    pub level: Severity,
     pub context: String,
     pub context2: String,
 }
 
 impl Report {
-    pub fn new(message: String, level: Severentity, context: String, context2: String) -> Self {
+    pub fn new(message: String, level: Severity, context: String, context2: String) -> Self {
         Self {
             message,
             level,
@@ -951,28 +951,18 @@ impl Report {
     }
 
     pub fn error(message: impl Into<String>) -> Self {
-        Self::new(
-            message.into(),
-            Severentity::Err,
-            String::new(),
-            String::new(),
-        )
+        Self::new(message.into(), Severity::Err, String::new(), String::new())
     }
 }
 
 impl Default for Report {
     fn default() -> Self {
-        Self::new(
-            String::new(),
-            Severentity::Info,
-            String::new(),
-            String::new(),
-        )
+        Self::new(String::new(), Severity::Info, String::new(), String::new())
     }
 }
 
 #[derive(Debug, Clone, Copy)]
-pub enum Severentity {
+pub enum Severity {
     Info,
     #[allow(dead_code)]
     Warn,

crates/nu-explore/src/views/preview.rs

@@ -10,7 +10,7 @@ use tui::layout::Rect;
 
 use crate::{
     nu_common::{NuSpan, NuText},
-    pager::{Frame, Report, Severentity, Transition, ViewConfig, ViewInfo},
+    pager::{Frame, Report, Severity, Transition, ViewConfig, ViewInfo},
 };
 
 use super::{coloredtextw::ColoredTextW, Layout, View};
@@ -105,7 +105,7 @@ impl View for Preview {
                 if is_end {
                     let report = Report::new(
                         String::from("END"),
-                        Severentity::Info,
+                        Severity::Info,
                         String::new(),
                         String::new(),
                     );
@@ -137,7 +137,7 @@ impl View for Preview {
                 if is_end {
                     let report = Report::new(
                         String::from("END"),
-                        Severentity::Info,
+                        Severity::Info,
                         String::new(),
                         String::new(),
                     );

crates/nu-explore/src/views/record/mod.rs

@@ -12,7 +12,7 @@ use tui::{layout::Rect, widgets::Block};
 use crate::{
     nu_common::{collect_input, NuConfig, NuSpan, NuStyleTable, NuText},
     pager::{
-        make_styled_string, nu_style_to_tui, Frame, Position, Report, Severentity, StyleConfig,
+        make_styled_string, nu_style_to_tui, Frame, Position, Report, Severity, StyleConfig,
         TableConfig, Transition, ViewConfig, ViewInfo,
     },
     views::ElementInfo,
@@ -584,7 +584,7 @@ fn create_records_report(
         message: title,
         context: covered_percent,
         context2: cursor,
-        level: Severentity::Info,
+        level: Severity::Info,
     }
 }