mirror of
https://github.com/zsh-users/zsh-autosuggestions
synced 2024-12-11 22:15:34 +00:00
192 lines
10 KiB
Markdown
192 lines
10 KiB
Markdown
# zsh-autosuggestions
|
|
|
|
_[Fish](http://fishshell.com/)-like fast/unobtrusive autosuggestions for zsh._
|
|
|
|
It suggests commands as you type based on history and completions.
|
|
|
|
Requirements: Zsh v4.3.11 or later
|
|
|
|
[](https://circleci.com/gh/zsh-users/zsh-autosuggestions)
|
|
[](https://gitter.im/zsh-users/zsh-autosuggestions)
|
|
|
|
<a href="https://asciinema.org/a/37390" target="_blank"><img src="https://asciinema.org/a/37390.png" width="400" /></a>
|
|
|
|
|
|
## Installation
|
|
|
|
See [INSTALL.md](INSTALL.md).
|
|
|
|
|
|
## Usage
|
|
|
|
As you type commands, you will see a completion offered after the cursor in a muted gray color. This color can be changed by setting the `ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE` variable. See [configuration](#configuration).
|
|
|
|
If you press the <kbd>→</kbd> key (`forward-char` widget) or <kbd>End</kbd> (`end-of-line` widget) with the cursor at the end of the buffer, it will accept the suggestion, replacing the contents of the command line buffer with the suggestion.
|
|
|
|
If you invoke the `forward-word` widget, it will partially accept the suggestion up to the point that the cursor moves to.
|
|
|
|
|
|
## Configuration
|
|
|
|
You may want to override the default global config variables. Default values of these variables can be found [here](src/config.zsh).
|
|
|
|
**Note:** If you are using Oh My Zsh, you can put this configuration in a file in the `$ZSH_CUSTOM` directory. See their comments on [overriding internals](https://github.com/robbyrussell/oh-my-zsh/wiki/Customization#overriding-internals).
|
|
|
|
|
|
### Suggestion Highlight Style
|
|
|
|
Set `ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE` to configure the style that the suggestion is shown with. The default is `fg=8`, which will set the foreground color to color 8 from the [256-color palette](https://upload.wikimedia.org/wikipedia/commons/1/15/Xterm_256color_chart.svg). If your terminal only supports 8 colors, you will need to use a number between 0 and 7.
|
|
|
|
Background color can also be set, and the suggestion can be styled bold, underlined, or standout. For example, this would show suggestions with bold, underlined, pink text on a cyan background:
|
|
|
|
```sh
|
|
ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE="fg=#ff00ff,bg=cyan,bold,underline"
|
|
```
|
|
|
|
For more info, read the Character Highlighting section of the zsh manual: `man zshzle` or [online](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Character-Highlighting).
|
|
|
|
**Note:** Some iTerm2 users have reported [not being able to see the suggestions](https://github.com/zsh-users/zsh-autosuggestions/issues/416#issuecomment-486516333). If this affects you, the problem is likely caused by incorrect color settings. In order to correct this, go into iTerm2's setting, navigate to profile > colors and make sure that the colors for Basic Colors > Background and ANSI Colors > Bright Black are **different**.
|
|
|
|
|
|
### Suggestion Strategy
|
|
|
|
`ZSH_AUTOSUGGEST_STRATEGY` is an array that specifies how suggestions should be generated. The strategies in the array are tried successively until a suggestion is found. There are currently three built-in strategies to choose from:
|
|
|
|
- `history`: Chooses the most recent match from history.
|
|
- `completion`: Chooses a suggestion based on what tab-completion would suggest. (requires `zpty` module)
|
|
- `match_prev_cmd`: Like `history`, but chooses the most recent match whose preceding history item matches the most recently executed command ([more info](src/strategies/match_prev_cmd.zsh)). Note that this strategy won't work as expected with ZSH options that don't preserve the history order such as `HIST_IGNORE_ALL_DUPS` or `HIST_EXPIRE_DUPS_FIRST`.
|
|
|
|
For example, setting `ZSH_AUTOSUGGEST_STRATEGY=(history completion)` will first try to find a suggestion from your history, but, if it can't find a match, will find a suggestion from the completion engine.
|
|
|
|
|
|
### Widget Mapping
|
|
|
|
This plugin works by triggering custom behavior when certain [zle widgets](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#Zle-Widgets) are invoked. You can add and remove widgets from these arrays to change the behavior of this plugin:
|
|
|
|
- `ZSH_AUTOSUGGEST_CLEAR_WIDGETS`: Widgets in this array will clear the suggestion when invoked.
|
|
- `ZSH_AUTOSUGGEST_ACCEPT_WIDGETS`: Widgets in this array will accept the suggestion when invoked.
|
|
- `ZSH_AUTOSUGGEST_EXECUTE_WIDGETS`: Widgets in this array will execute the suggestion when invoked.
|
|
- `ZSH_AUTOSUGGEST_PARTIAL_ACCEPT_WIDGETS`: Widgets in this array will partially accept the suggestion when invoked.
|
|
- `ZSH_AUTOSUGGEST_IGNORE_WIDGETS`: Widgets in this array will not trigger any custom behavior.
|
|
|
|
Widgets that modify the buffer and are not found in any of these arrays will fetch a new suggestion after they are invoked.
|
|
|
|
**Note:** A widget shouldn't belong to more than one of the above arrays.
|
|
|
|
|
|
### Disabling suggestion for large buffers
|
|
|
|
Set `ZSH_AUTOSUGGEST_BUFFER_MAX_SIZE` to an integer value to disable autosuggestion for large buffers. The default is unset, which means that autosuggestion will be tried for any buffer size. Recommended value is 20.
|
|
This can be useful when pasting large amount of text in the terminal, to avoid triggering autosuggestion for strings that are too long.
|
|
|
|
### Asynchronous Mode
|
|
|
|
Suggestions are fetched asynchronously by default in zsh versions 5.0.8 and greater. To disable asynchronous suggestions and fetch them synchronously instead, `unset ZSH_AUTOSUGGEST_USE_ASYNC` after sourcing the plugin.
|
|
|
|
Alternatively, if you are using a version of zsh older than 5.0.8 and want to enable asynchronous mode, set the `ZSH_AUTOSUGGEST_USE_ASYNC` variable after sourcing the plugin (it can be set to anything). Note that there is [a bug](https://github.com/zsh-users/zsh-autosuggestions/issues/364#issuecomment-481423232) in versions of zsh older than 5.0.8 where <kbd>ctrl</kbd> + <kbd>c</kbd> will fail to reset the prompt immediately after fetching a suggestion asynchronously.
|
|
|
|
### Disabling automatic widget re-binding
|
|
|
|
Set `ZSH_AUTOSUGGEST_MANUAL_REBIND` (it can be set to anything) to disable automatic widget re-binding on each precmd. This can be a big boost to performance, but you'll need to handle re-binding yourself if any of the widget lists change or if you or another plugin wrap any of the autosuggest widgets. To re-bind widgets, run `_zsh_autosuggest_bind_widgets`.
|
|
|
|
### Ignoring history suggestions that match a pattern
|
|
|
|
Set `ZSH_AUTOSUGGEST_HISTORY_IGNORE` to a [glob pattern](http://zsh.sourceforge.net/Doc/Release/Expansion.html#Glob-Operators) to prevent offering suggestions for history entries that match the pattern. For example, set it to `"cd *"` to never suggest any `cd` commands from history. Or set to `"?(#c50,)"` to never suggest anything 50 characters or longer.
|
|
|
|
**Note:** This only affects the `history` and `match_prev_cmd` suggestion strategies.
|
|
|
|
### Skipping completion suggestions for certain cases
|
|
|
|
Set `ZSH_AUTOSUGGEST_COMPLETION_IGNORE` to a [glob pattern](http://zsh.sourceforge.net/Doc/Release/Expansion.html#Glob-Operators) to prevent offering completion suggestions when the buffer matches that pattern. For example, set it to `"git *"` to disable completion suggestions for git subcommands.
|
|
|
|
**Note:** This only affects the `completion` suggestion strategy.
|
|
|
|
|
|
### Key Bindings
|
|
|
|
This plugin provides a few widgets that you can use with `bindkey`:
|
|
|
|
1. `autosuggest-accept`: Accepts the current suggestion.
|
|
2. `autosuggest-execute`: Accepts and executes the current suggestion.
|
|
3. `autosuggest-clear`: Clears the current suggestion.
|
|
4. `autosuggest-fetch`: Fetches a suggestion (works even when suggestions are disabled).
|
|
5. `autosuggest-disable`: Disables suggestions.
|
|
6. `autosuggest-enable`: Re-enables suggestions.
|
|
7. `autosuggest-toggle`: Toggles between enabled/disabled suggestions.
|
|
|
|
For example, this would bind <kbd>ctrl</kbd> + <kbd>space</kbd> to accept the current suggestion.
|
|
|
|
```sh
|
|
bindkey '^ ' autosuggest-accept
|
|
```
|
|
|
|
|
|
## Troubleshooting
|
|
|
|
If you have a problem, please search through [the list of issues on GitHub](https://github.com/zsh-users/zsh-autosuggestions/issues?q=) to see if someone else has already reported it.
|
|
|
|
### Reporting an Issue
|
|
|
|
Before reporting an issue, please try temporarily disabling sections of your configuration and other plugins that may be conflicting with this plugin to isolate the problem.
|
|
|
|
When reporting an issue, please include:
|
|
|
|
- The smallest, simplest `.zshrc` configuration that will reproduce the problem. See [this comment](https://github.com/zsh-users/zsh-autosuggestions/issues/102#issuecomment-180944764) for a good example of what this means.
|
|
- The version of zsh you're using (`zsh --version`)
|
|
- Which operating system you're running
|
|
|
|
|
|
## Uninstallation
|
|
|
|
1. Remove the code referencing this plugin from `~/.zshrc`.
|
|
|
|
2. Remove the git repository from your hard drive
|
|
|
|
```sh
|
|
rm -rf ~/.zsh/zsh-autosuggestions # Or wherever you installed
|
|
```
|
|
|
|
|
|
## Development
|
|
|
|
### Build Process
|
|
|
|
Edit the source files in `src/`. Run `make` to build `zsh-autosuggestions.zsh` from those source files.
|
|
|
|
|
|
### Pull Requests
|
|
|
|
Pull requests are welcome! If you send a pull request, please:
|
|
|
|
- Request to merge into the `develop` branch (*NOT* `master`)
|
|
- Match the existing coding conventions.
|
|
- Include helpful comments to keep the barrier-to-entry low for people new to the project.
|
|
- Write tests that cover your code as much as possible.
|
|
|
|
|
|
### Testing
|
|
|
|
Tests are written in ruby using the [`rspec`](http://rspec.info/) framework. They use [`tmux`](https://tmux.github.io/) to drive a pseudoterminal, sending simulated keystrokes and making assertions on the terminal content.
|
|
|
|
Test files live in `spec/`. To run the tests, run `make test`. To run a specific test, run `TESTS=spec/some_spec.rb make test`. You can also specify a `zsh` binary to use by setting the `TEST_ZSH_BIN` environment variable (ex: `TEST_ZSH_BIN=/bin/zsh make test`).
|
|
|
|
A docker image for testing is available [on docker hub](https://hub.docker.com/r/ericfreese/zsh-autosuggestions-test). It comes with ruby, the bundler dependencies, and all supported versions of zsh installed.
|
|
|
|
Pull the docker image with:
|
|
|
|
```sh
|
|
docker pull ericfreese/zsh-autosuggestions-test
|
|
```
|
|
|
|
To run the tests for a specific version of zsh (where `<version>` below is substituted with the contents of a line from the [`ZSH_VERSIONS`](ZSH_VERSIONS) file):
|
|
|
|
```sh
|
|
docker run -it -e TEST_ZSH_BIN=zsh-<version> -v $PWD:/zsh-autosuggestions zsh-autosuggestions-test make test
|
|
```
|
|
|
|
|
|
## License
|
|
|
|
This project is licensed under [MIT license](http://opensource.org/licenses/MIT).
|
|
For the full text of the license, see the [LICENSE](LICENSE) file.
|