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refactor the ansi help page (#8713)
# Description i've always found the `ansi --help` extra usage hard to read and understand... i decided to give it a shot today, so here is what i came up 😋 - make the extra usage structured with `nushell` tables - make the examples clearer with variables and comments one change that might appear strange is the following last two commits ```diff diff --git a/crates/nu-command/src/platform/ansi/ansi_.rs b/crates/nu-command/src/platform/ansi/ansi_.rs index 4746d27fa..ba3e597c4 100644 --- a/crates/nu-command/src/platform/ansi/ansi_.rs +++ b/crates/nu-command/src/platform/ansi/ansi_.rs @@ -507,10 +507,7 @@ impl Command for AnsiCommand { fn signature(&self) -> Signature { Signature::build("ansi") - .input_output_types(vec![ - (Type::Nothing, Type::String), - (Type::List(Box::new(Type::String)), Type::String), - ]) + .input_output_types(vec![(Type::Nothing, Type::String)]) .optional( "code", SyntaxShape::Any, ``` `ansi` is never used on `list` inputs, as can be seen in the `Ansi.run` function: `_input: PipelineData` is never used. this broke the tests (see [this action](https://github.com/nushell/nushell/actions/runs/4589552235/jobs/8104520078#step:4:1392)) for no real reason... # User-Facing Changes hopefully an easier to read `help ansi` page. # Tests + Formatting - 🟢 `toolkit fmt` - 🟢 `toolkit clippy` - 🟢 `toolkit test` - 🟢 `toolkit test stdlib` # 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.
This commit is contained in:
Antoine Stevan
GitHub
parent
65c90d5b45
commit
caf1432dc7
@ -507,10 +507,7 @@ impl Command for AnsiCommand {
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fn signature(&self) -> Signature {
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Signature::build("ansi")
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.input_output_types(vec![
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(Type::Nothing, Type::String),
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(Type::List(Box::new(Type::String)), Type::String),
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])
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.input_output_types(vec![(Type::Nothing, Type::String)])
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.optional(
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"code",
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SyntaxShape::Any,
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@ -518,12 +515,12 @@ impl Command for AnsiCommand {
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)
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.switch(
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"escape", // \x1b[
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"escape sequence without the escape character(s)",
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r#"escape sequence without the escape character(s) ('\x1b[' is not required)"#,
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Some('e'),
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)
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.switch(
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"osc", // \x1b]
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"operating system command (ocs) escape sequence without the escape character(s)",
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r#"operating system command (osc) escape sequence without the escape character(s) ('\x1b]' is not required)"#,
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Some('o'),
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)
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.switch("list", "list available ansi code names", Some('l'))
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@ -531,58 +528,72 @@ impl Command for AnsiCommand {
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}
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fn usage(&self) -> &str {
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"Output ANSI codes to change color."
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"Output ANSI codes to change color and style of text."
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}
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fn extra_usage(&self) -> &str {
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r#"For escape sequences:
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Escape: '\x1b[' is not required for --escape parameter
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Format: #(;#)m
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Example: 1;31m for bold red or 2;37;41m for dimmed white fg with red bg
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There can be multiple text formatting sequence numbers
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separated by a ; and ending with an m where the # is of the
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following values:
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attribute_number, abbreviation, description
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0 reset / normal display
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1 b bold or increased intensity
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2 d faint or decreased intensity
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3 i italic on (non-mono font)
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4 u underline on
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5 l slow blink on
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6 fast blink on
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7 r reverse video on
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8 h nondisplayed (invisible) on
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9 s strike-through on
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"An introduction to what ANSI escape sequences are can be found in the
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[*ANSI escape code*](https://en.wikipedia.org/wiki/ANSI_escape_code) Wikipedia page.
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foreground/bright colors background/bright colors
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30/90 black 40/100 black
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31/91 red 41/101 red
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32/92 green 42/102 green
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33/93 yellow 43/103 yellow
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34/94 blue 44/104 blue
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35/95 magenta 45/105 magenta
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36/96 cyan 46/106 cyan
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37/97 white 47/107 white
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39 default 49 default
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https://en.wikipedia.org/wiki/ANSI_escape_code
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Escape sequences usual values:
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╭────┬────────────┬────────┬────────┬─────────╮
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│ # │ type │ normal │ bright │ name │
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├────┼────────────┼────────┼────────┼─────────┤
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│ 0 │ foreground │ 30 │ 90 │ black │
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│ 1 │ foreground │ 31 │ 91 │ red │
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│ 2 │ foreground │ 32 │ 92 │ green │
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│ 3 │ foreground │ 33 │ 93 │ yellow │
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│ 4 │ foreground │ 34 │ 94 │ blue │
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│ 5 │ foreground │ 35 │ 95 │ magenta │
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│ 6 │ foreground │ 36 │ 96 │ cyan │
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│ 7 │ foreground │ 37 │ 97 │ white │
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│ 8 │ foreground │ 39 │ │ default │
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│ 9 │ background │ 40 │ 100 │ black │
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│ 10 │ background │ 41 │ 101 │ red │
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│ 11 │ background │ 42 │ 102 │ green │
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│ 12 │ background │ 43 │ 103 │ yellow │
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│ 13 │ background │ 44 │ 104 │ blue │
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│ 14 │ background │ 45 │ 105 │ magenta │
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│ 15 │ background │ 46 │ 106 │ cyan │
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│ 16 │ background │ 47 │ 107 │ white │
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│ 17 │ background │ 49 │ │ default │
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╰────┴────────────┴────────┴────────┴─────────╯
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OSC: '\x1b]' is not required for --osc parameter
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Example: echo [(ansi -o '0') 'some title' (char bel)] | str join
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Format: #
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0 Set window title and icon name
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1 Set icon name
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2 Set window title
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4 Set/read color palette
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9 iTerm2 Grown notifications
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10 Set foreground color (x11 color spec)
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11 Set background color (x11 color spec)
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... others"#
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Escape sequences attributes:
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╭───┬────┬──────────────┬──────────────────────────────╮
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│ # │ id │ abbreviation │ description │
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├───┼────┼──────────────┼──────────────────────────────┤
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│ 0 │ 0 │ │ reset / normal display │
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│ 1 │ 1 │ b │ bold or increased intensity │
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│ 2 │ 2 │ d │ faint or decreased intensity │
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│ 3 │ 3 │ i │ italic on (non-mono font) │
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│ 4 │ 4 │ u │ underline on │
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│ 5 │ 5 │ l │ slow blink on │
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│ 6 │ 6 │ │ fast blink on │
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│ 7 │ 7 │ r │ reverse video on │
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│ 8 │ 8 │ h │ nondisplayed (invisible) on │
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│ 9 │ 9 │ s │ strike-through on │
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╰───┴────┴──────────────┴──────────────────────────────╯
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Operating system commands:
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╭───┬─────┬───────────────────────────────────────╮
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│ # │ id │ description │
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├───┼─────┼───────────────────────────────────────┤
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│ 0 │ 0 │ Set window title and icon name │
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│ 1 │ 1 │ Set icon name │
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│ 2 │ 2 │ Set window title │
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│ 3 │ 4 │ Set/read color palette │
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│ 4 │ 9 │ iTerm2 Grown notifications │
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│ 5 │ 10 │ Set foreground color (x11 color spec) │
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│ 6 │ 11 │ Set background color (x11 color spec) │
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│ 7 │ ... │ others │
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╰───┴─────┴───────────────────────────────────────╯"
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}
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fn examples(&self) -> Vec<Example> {
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vec![
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Example {
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description: "Change color to green",
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description: "Change color to green (see how the next example text will be green!)",
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example: r#"ansi green"#,
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result: Some(Value::test_string("\u{1b}[32m")),
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},
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@ -592,23 +603,28 @@ Format: #
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result: Some(Value::test_string("\u{1b}[0m")),
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},
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Example {
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description:
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"Use ansi to color text (rb = red bold, gb = green bold, pb = purple bold)",
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example: r#"$'(ansi rb)Hello (ansi gb)Nu (ansi pb)World(ansi reset)'"#,
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description: "Use different colors and styles in the same text",
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example: r#"$'(ansi red_bold)Hello(ansi reset) (ansi green_dimmed)Nu(ansi reset) (ansi purple_italic)World(ansi reset)'"#,
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result: Some(Value::test_string(
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"\u{1b}[1;31mHello \u{1b}[1;32mNu \u{1b}[1;35mWorld\u{1b}[0m",
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"\u{1b}[1;31mHello\u{1b}[0m \u{1b}[2;32mNu\u{1b}[0m \u{1b}[3;35mWorld\u{1b}[0m",
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)),
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},
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Example {
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description: "Use ansi to color text (italic bright yellow on red 'Hello' with green bold 'Nu' and purple bold 'World')",
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example: r#"[(ansi -e '3;93;41m') Hello (ansi reset) " " (ansi gb) Nu " " (ansi pb) World (ansi reset)] | str join"#,
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description: "The same example as above with short names",
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example: r#"$'(ansi rb)Hello(ansi reset) (ansi gd)Nu(ansi reset) (ansi pi)World(ansi reset)'"#,
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result: Some(Value::test_string(
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"\u{1b}[3;93;41mHello\u{1b}[0m \u{1b}[1;32mNu \u{1b}[1;35mWorld\u{1b}[0m",
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"\u{1b}[1;31mHello\u{1b}[0m \u{1b}[2;32mNu\u{1b}[0m \u{1b}[3;35mWorld\u{1b}[0m",
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)),
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},
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Example {
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description: "Use ansi to color text with a style (blue on red in bold)",
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example: r#"$"(ansi -e { fg: '#0000ff' bg: '#ff0000' attr: b })Hello Nu World(ansi reset)""#,
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description: "Use escape codes, without the '\\x1b['",
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example: r#"$"(ansi -e '3;93;41m')Hello(ansi reset)" # italic bright yellow on red background"#,
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result: Some(Value::test_string("\u{1b}[3;93;41mHello\u{1b}[0m")),
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},
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Example {
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description: "Use structured escape codes",
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example: r#"let bold_blue_on_red = { fg: '#0000ff' bg: '#ff0000' attr: b }
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$"(ansi -e $bold_blue_on_red)Hello Nu World(ansi reset)""#,
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result: Some(Value::test_string(
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"\u{1b}[1;48;2;255;0;0;38;2;0;0;255mHello Nu World\u{1b}[0m",
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)),
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