Bash Complete

Bash Complete is a customizable command autocompletion system for Bash, designed to enhance the user experience by providing autocompletion suggestions for specific commands (by default, yarn). This project consists of a set of scripts that work together to support directory-specific and nested command autocompletion for complex workflows.

Install Instructions

Quick Install

You can install Bash Complete directly using npx:

npx bash-complete

Manual Install

Alternatively, you can clone the repository and run the install.sh script:

./install.sh

The installation script performs the following actions:

1. Copies .bash-complete.sh and .bash-complete-update.cjs to the user’s home directory.
2. Creates .bash-complete.json in the home directory with default content ({}) if it doesn't already exist.
3. Updates .bashrc to source .bash-complete.sh for loading autocompletion on new shell sessions.

Once installed, open a new terminal session to start using Bash Complete.

How to Use

After installation, you can use Bash Complete for autocompletion with yarn (or any command specified in the SUPPORTED_COMMANDS array).

• Autocompletion: The system records and suggests commands that you have previously run in this directory. Start typing a known command, followed by a partial command or subcommand, and press Tab to see autocomplete suggestions. For example:

  yarn build
  yarn b <Tab>

• 💡 Automatic Command Logging: Run yarn --auto to automatically populate the autocompletion data for the current directory’s package.json scripts, as well as workspaces and their scripts.

  yarn --auto

  This will auto-discover available commands and subcommands and store them in .bash-complete.json for the current project directory and any workspaces it contains.

Customization: Adding More Commands

By default, the script only supports yarn as a command. To enable autocompletion for additional commands:

1. Open .bash-complete.sh in your home directory:

   nano ~/.bash-complete.sh

2. Locate the SUPPORTED_COMMANDS array near the top of the file:

   SUPPORTED_COMMANDS=("yarn")

3. Add any additional commands to the array, separated by spaces. For example:

   SUPPORTED_COMMANDS=("yarn" "npm" "my_custom_command")

4. Save the file, and new commands will be supported automatically in new terminal sessions.

What This Project Does

1. Custom Command Autocompletion: Supports autocompletion for a specified list of commands in Bash, using data stored in .bash-complete.json.
2. Directory-Specific Suggestions: The autocompletion suggestions are context-aware, providing different options based on the current directory.
3. Nested Command Support: Handles nested commands with complex structures (e.g., yarn workspace @local/package build) and supports autocompletion for each part of the command.

File Details

.bash-complete.sh

This is the main script responsible for setting up command overrides and defining the autocompletion function:

• Overrides Commands in SUPPORTED_COMMANDS, allowing autocompletion and logging.
• Autocompletion Logic: Looks up suggestions in .bash-complete.json based on the current directory and command structure.

.bash-complete-update.cjs

This Node.js script updates .bash-complete.json with the current command structure:

• Logging Commands: Every time a supported command runs, .bash-complete-update.cjs updates the command tree in .bash-complete.json.
• Directory-Specific Data: Each directory gets its own set of command suggestions in the JSON file.

.bash-complete.json

This JSON file stores the command structure used by the autocompletion function:

• Format: Directory paths are top-level keys, with command structures nested within each path.
• Example Structure:

  {
    "/home/user/project": {
      "yarn": {
        "build": {
          "dev": {},
          "prod": {}
        },
        "test": {
          "unit": {},
          "integration": {}
        }
      }
    }
  }

install.sh

Automates the setup process:

• Copies Required Files to the home directory.
• Adds Source Entry to .bashrc: Ensures .bash-complete.sh is loaded for each new terminal session.
• Dependency Check: Verifies jq is installed.

package.json

Defines project metadata and dependencies. If the project expands to include additional Node modules, you can manage them here.

Uninstallation

To remove Bash Complete:

1. Delete the installed files:

   rm ~/.bash-complete.json ~/.bash-complete.sh ~/.bash-complete-update.cjs

2. Remove the source line from .bashrc:

   nano ~/.bashrc

   Delete the following lines:

   # bash-complete setup
   source ~/.bash-complete.sh

3. Open a new terminal session to apply changes.

License

This project is open-source under the MIT License.