An async jujutsu (jj) prompt plugin for Fish shell.

• ⚡ Fully async - Non-blocking prompt that stays responsive
• 🎨 Rich info display - Shows change ID, bookmarks, descriptions, and status flags
• 🔄 Smart detection - Automatically detects jj repos
• 🚀 Zero impact - Background processing keeps your shell zippy
• 🎯 Universal compatibility - Works with any Fish prompt

Install with Fisher:

fisher install dacuna/fish-jj-prompt-plugin

The plugin provides two main functions for integration with any Fish prompt:

Returns the formatted jj prompt string with all information:

function fish_prompt
    set --local jj_prompt (fish_jj_prompt 2>/dev/null)
    if test -n "$jj_prompt"
        echo -n $jj_prompt
    end
end

Returns 0 (success) if in a jj repository, 1 otherwise. Use this to conditionally show jj vs git prompts:

function fish_prompt
    if jj_prompt_is_repo
        echo -n (fish_jj_prompt)
    else
        echo -n (fish_git_prompt)
    end
end

If you're using Hydro prompt, modify your fish_prompt function to conditionally show jj or git info:

function fish_prompt --description Hydro
    # Use jj prompt in jj repos, otherwise use Hydro's git prompt
    set --local vcs_info ""
    if jj_prompt_is_repo
        set vcs_info (fish_jj_prompt)
    else
        set vcs_info $_hydro_color_git$_hydro_git$hydro_color_normal
    end
    
    echo -e "$_hydro_color_start$hydro_symbol_start$hydro_color_normal$_hydro_color_pwd$_hydro_pwd$hydro_color_normal $vcs_info $_hydro_color_duration$_hydro_cmd_duration$hydro_color_normal$_hydro_status$hydro_color_normal "
end

In jj repositories, the prompt displays:

• Change ID in bold magenta (e.g., [k])
• Bookmarks with sync status (* indicates unsynced)
• Description if no bookmarks exist
• Status flags like conflict, empty, divergent, hidden
• Visual history showing commits from trunk fork point to current

Example prompt in a jj repo:

The plugin uses Fish's event system to:

1. Check if you're in a jj repo on directory changes (PWD)
2. Spawn background processes to fetch jj info asynchronously
3. Update the prompt without blocking when data is ready

• Fish shell 3.0+
• jujutsu (jj) CLI tool

MIT