# 高级配置

`Starship 功能繁多，有时您必须在编辑 <code>starship.toml` 之外做更多工作才能实现某些效果。 此页面详细介绍了一些在 starship 中使用的高级配置技巧。

::: warning

本节所述的配置内容可能随 Starship 未来版本的更新而改变。

:::

## 在 Bash 中自定义预提示和预执行命令

Bash 并没有类似大多数其它 shell 的正式预执行/预命令框架。 因此，很难在 `bash` 中提供完全可自定义的 hook 机制。 然而，Starship 确实能使您有限地在提示符渲染过程中插入自己的函数执行：

- 若要在提示符显示之前运行自定义函数，需要定义此函数，然后将函数名赋值给 `starship_reserved_user_func`。 例如，要在提示符之前绘制一枚火箭，您应该写

```bash
function blastoff(){
    echo "🚀"
}
starship_precmd_user_func="blastoff"
```

- To run a custom function right before a command runs, you can use the [`DEBUG` trap mechanism](https://jichu4n.com/posts/debug-trap-and-prompt_command-in-bash/). 然而，您**必须**在捕捉 DEBUG 信号*之前*启动 Starship！ Starship 可以保留 DEBUG trap 的值，但如果该 trap 在 starship 启动后被覆盖，一些功能将会被破坏。

```bash
function blastoff(){
    echo "🚀"
}
trap blastoff DEBUG     # 启动 starship *之前* 设置 DEBUG trap
eval $(starship init bash)
```

## 更改窗口标题

Some shell prompts will automatically change the window title for you (e.g. to reflect your working directory). Fish 甚至默认会执行此功能。 Starship 没有实现此功能，但将这个功能添加到 `bash` 或 `zsh` 是相当简单的。

首先，定义窗口标题更改函数（在 bash 和 zsh 中相同）：

```bash
function set_win_title(){
    echo -ne "\033]0; YOUR_WINDOW_TITLE_HERE \007"
}
```

您可以使用变量来定制标题（常用的有 `$USER`，`$HOSTNAME` 和 `$PWD`）。

在 `bash` 中，设置此函数为 starship 预执行函数：

```bash
starship_precmd_user_func="set_win_title"
```

在 `zsh`中，将此函数添加到 `reservmd_functions` 列表：

```bash
precmd_functions+=(set_win_title)
```

If you like the result, add these lines to your shell configuration file (`~/.bashrc` or `~/.zshrc`) to make it permanent.

For example, if you want to display your current directory in your terminal tab title, add the following snippet to your `~/.bashrc` or `~/.zshrc`:

```bash
function set_win_title(){
    echo -ne "\033]0; $(basename "$PWD") \007"
}
starship_precmd_user_func="set_win_title"
```

## Enable Right Prompt

Some shells support a right prompt which renders on the same line as the input. Starship can set the content of the right prompt using the `right_format` option. Any module that can be used in `format` is also supported in `right_format`. The `$all` variable will only contain modules not explicitly used in either `format` or `right_format`.

Note: The right prompt is a single line following the input location. To right align modules above the input line in a multi-line prompt, see the [fill module](/config/#fill).

`right_format` is currently supported for the following shells: elvish, fish, zsh.

### 示例

```toml
# ~/.config/starship.toml

# A minimal left prompt
format = """$character"""

# move the rest of the prompt to the right
right_format = """$all"""
```

Produces a prompt like the following:

```
▶                                   starship on  rprompt [!] is 📦 v0.57.0 via 🦀 v1.54.0 took 17s
```


## 样式设定

Style strings are a list of words, separated by whitespace. The words are not case sensitive (i.e. `bold` and `BoLd` are considered the same string). Each word can be one of the following:

  - `bold`
  - `italic`
  - `underline`
  - `dimmed`
  - `inverted`
  - `bg:<color>`
  - `fg:<color>`
  - `<color>`
  - `none`

where `<color>` is a color specifier (discussed below). `fg:<color>` and `<color>` currently do the same thing, though this may change in the future. `inverted` swaps the background and foreground colors. The order of words in the string does not matter.

The `none` token overrides all other tokens in a string if it is not part of a `bg:` specifier, so that e.g. `fg:red none fg:blue` will still create a string with no styling. `bg:none` sets the background to the default color so `fg:red bg:none` is equivalent to `red` or `fg:red` and `bg:green fg:red bg:none` is also equivalent to `fg:red` or `red`. It may become an error to use `none` in conjunction with other tokens in the future.

A color specifier can be one of the following:

 - 标准终端颜色之一：`black`，`red`，`green`，`blue`，`yellow`，`purple`，`cyan`，`white`。 您可以使用可选前缀 `bright-` 来获取明亮版本的颜色（例如，`bright-white`）。
 - 一个 `#` 后跟一个六位十六进制数。 这将指定一个 [十六进制 RGB 颜色代码](https://www.w3schools.com/colors/colors_hexadecimal.asp)。
 - 0-255 之间的数字。 这将指定一个 [8 位 ANSI 颜色码](https://i.stack.imgur.com/KTSQa.png)。

If multiple colors are specified for foreground/background, the last one in the string will take priority.