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zsh: import df6f6f9ff41 of zsh-autosuggestions
author Augie Fackler <raf@durin42.com>
date Mon, 03 Dec 2018 22:37:29 -0500
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1 # zsh-autosuggestions
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2
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3 _[Fish](http://fishshell.com/)-like fast/unobtrusive autosuggestions for zsh._
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4
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5 It suggests commands as you type, based on command history.
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6
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7 Requirements: Zsh v4.3.11 or later
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8
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9 [![CircleCI](https://circleci.com/gh/zsh-users/zsh-autosuggestions.svg?style=svg)](https://circleci.com/gh/zsh-users/zsh-autosuggestions)
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10
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11 <a href="https://asciinema.org/a/37390" target="_blank"><img src="https://asciinema.org/a/37390.png" width="400" /></a>
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14 ## Installation
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15
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16 See [INSTALL.md](INSTALL.md).
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18
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19 ## Usage
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20
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21 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).
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22
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23 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.
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24
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25 If you invoke the `forward-word` widget, it will partially accept the suggestion up to the point that the cursor moves to.
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27
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28 ## Configuration
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29
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30 You may want to override the default global config variables. Default values of these variables can be found [here](src/config.zsh).
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31
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32 **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).
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34
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35 ### Suggestion Highlight Style
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36
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37 Set `ZSH_AUTOSUGGEST_HIGHLIGHT_STYLE` to configure the style that the suggestion is shown with. The default is `fg=8`.
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39
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40 ### Suggestion Strategy
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41
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42 `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 two built-in strategies to choose from:
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43
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44 - `history`: Chooses the most recent match from history.
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45 - `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`.
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47
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48 ### Widget Mapping
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49
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50 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:
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51
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52 - `ZSH_AUTOSUGGEST_CLEAR_WIDGETS`: Widgets in this array will clear the suggestion when invoked.
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53 - `ZSH_AUTOSUGGEST_ACCEPT_WIDGETS`: Widgets in this array will accept the suggestion when invoked.
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54 - `ZSH_AUTOSUGGEST_EXECUTE_WIDGETS`: Widgets in this array will execute the suggestion when invoked.
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55 - `ZSH_AUTOSUGGEST_PARTIAL_ACCEPT_WIDGETS`: Widgets in this array will partially accept the suggestion when invoked.
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56 - `ZSH_AUTOSUGGEST_IGNORE_WIDGETS`: Widgets in this array will not trigger any custom behavior.
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57
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58 Widgets that modify the buffer and are not found in any of these arrays will fetch a new suggestion after they are invoked.
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59
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60 **Note:** A widget shouldn't belong to more than one of the above arrays.
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63 ### Disabling suggestion for large buffers
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64
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65 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.
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66 This can be useful when pasting large amount of text in the terminal, to avoid triggering autosuggestion for too long strings.
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67
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68 ### Enable Asynchronous Mode
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69
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70 As of `v0.4.0`, suggestions can be fetched asynchronously using the `zsh/zpty` module. To enable this behavior, set the `ZSH_AUTOSUGGEST_USE_ASYNC` variable (it can be set to anything).
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72
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73 ### Key Bindings
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74
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75 This plugin provides a few widgets that you can use with `bindkey`:
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76
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77 1. `autosuggest-accept`: Accepts the current suggestion.
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78 2. `autosuggest-execute`: Accepts and executes the current suggestion.
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79 3. `autosuggest-clear`: Clears the current suggestion.
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80 4. `autosuggest-fetch`: Fetches a suggestion (works even when suggestions are disabled).
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81 5. `autosuggest-disable`: Disables suggestions.
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82 6. `autosuggest-enable`: Re-enables suggestions.
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83 7. `autosuggest-toggle`: Toggles between enabled/disabled suggestions.
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84
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85 For example, this would bind <kbd>ctrl</kbd> + <kbd>space</kbd> to accept the current suggestion.
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86
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87 ```sh
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88 bindkey '^ ' autosuggest-accept
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89 ```
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90
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91
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92 ## Troubleshooting
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93
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94 If you have a problem, please search through [the list of issues on GitHub](https://github.com/zsh-users/zsh-autosuggestions/issues) to see if someone else has already reported it.
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95
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96
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97 ### Reporting an Issue
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98
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99 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.
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100
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101 When reporting an issue, please include:
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102
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103 - 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.
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104 - The version of zsh you're using (`zsh --version`)
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105 - Which operating system you're running
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106
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107
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108 ## Uninstallation
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109
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110 1. Remove the code referencing this plugin from `~/.zshrc`.
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111
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112 2. Remove the git repository from your hard drive
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113
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114 ```sh
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115 rm -rf ~/.zsh/zsh-autosuggestions # Or wherever you installed
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116 ```
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117
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118
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119 ## Development
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120
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121 ### Build Process
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122
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123 Edit the source files in `src/`. Run `make` to build `zsh-autosuggestions.zsh` from those source files.
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124
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125
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126 ### Pull Requests
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127
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128 Pull requests are welcome! If you send a pull request, please:
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129
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130 - Request to merge into the `develop` branch (*NOT* `master`)
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131 - Match the existing coding conventions.
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132 - Include helpful comments to keep the barrier-to-entry low for people new to the project.
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133 - Write tests that cover your code as much as possible.
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134
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135
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136 ### Testing
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137
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138 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.
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139
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140 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`).
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141
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142 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.
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143
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144 Pull the docker image with:
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145
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146 ```sh
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147 docker pull ericfreese/zsh-autosuggestions-test
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148 ```
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149
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150 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):
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151
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152 ```sh
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153 docker run -it -e TEST_ZSH_BIN=zsh-<version> -v $PWD:/zsh-autosuggestions zsh-autosuggestions-test make test
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154 ```
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155
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156
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157 ## License
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158
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159 This project is licensed under [MIT license](http://opensource.org/licenses/MIT).
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160 For the full text of the license, see the [LICENSE](LICENSE) file.