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85 lines
3.6 KiB
Markdown
85 lines
3.6 KiB
Markdown
# Advanced Configuration
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While Starship is a versatile shell, sometimes you need to do more than edit `starship.toml` to get it to do certain things. This page details some of the more advanced configuration techniques used in starship.
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::: warning
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The configurations in this section are subject to change in future releases of Starship.
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:::
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## Custom pre-prompt and pre-execution Commands in Bash
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Bash does not have a formal preexec/precmd framework like most other shells. Because of this, it is difficult to provide fully customizable hooks in `bash`. However, Starship does give you limited ability to insert your own functions into the prompt-rendering procedure:
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- To run a custom function right before the prompt is drawn, define a new function and then assign its name to `starship_precmd_user_func`. For example, to draw a rocket before the prompt, you would do
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```bash
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function blastoff(){
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echo "🚀"
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}
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starship_precmd_user_func="blastoff"
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```
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- 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/). However, you **must** trap the DEBUG signal *before* initializing Starship! Starship can preserve the value of the DEBUG trap, but if the trap is overwritten after starship starts up, some functionality will break.
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```bash
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function blastoff(){
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echo "🚀"
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}
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trap blastoff DEBUG # Trap DEBUG *before* running starship
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eval $(starship init bash)
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```
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## Change Window Title
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Some shell prompts will automatically change the window title for you (e.g. to reflect your working directory). Fish even does it by default. Starship does not do this, but it's fairly straightforward to add this functionality to `bash` or `zsh`.
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First, define a window title change function (identical in bash and zsh):
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```bash
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function set_win_title(){
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echo -ne "\033]0; YOUR_WINDOW_TITLE_HERE \007"
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}
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```
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You can use variables to customize this title (`$USER`, `$HOSTNAME`, and `$PWD` are popular choices).
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In `bash`, set this function to be the precmd starship function:
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```bash
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starship_precmd_user_func="set_win_title"
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```
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In `zsh`, add this to the `precmd_functions` array:
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```bash
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precmd_functions+=(set_win_title)
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```
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If you like the result, add these lines to your shell configuration file (`~/.bashrc` or `~/.zsrhc`) to make it permanent.
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## Estilo dos textos
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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:
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- `bold`
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- `underline`
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- `dimmed`
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- `bg:<color>`
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- `fg:<color>`
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- `<color>`
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- `none`
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where `<color>` is a color specifier (discussed below). `fg:<color>` and `<color>` currently do the same thing , though this may change in the future. The order of words in the string does not matter.
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The `none` token overrides all other tokens in a string, so that e.g. `fg:red none fg:blue` will still create a string with no styling. It may become an error to use `none` in conjunction with other tokens in the future.
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A color specifier can be one of the following:
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- One of the standard terminal colors: `black`, `red`, `green`, `blue`, `yellow`, `purple`, `cyan`, `white`. You can optionally prefix these with `bright-` to get the bright version (e.g. `bright-white`).
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- A `#` followed by a six-digit hexadecimal number. This specifies an [RGB color hex code](https://www.w3schools.com/colors/colors_hexadecimal.asp).
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- A number between 0-255. This specifies an [8-bit ANSI Color Code](https://i.stack.imgur.com/KTSQa.png).
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If multiple colors are specified for foreground/background, the last one in the string will take priority.
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