gen-commit-message Fish function for auto-generating commit messages with llm and Claude Haiku

gen-commit-message.fish

# Prerequisites:
# - llm command line tool: https://github.com/simonw/llm
# - llm-anthropic plugin for llm: https://github.com/simonw/llm-anthropic
# - Anthropic account with access to Claude Haiku models
# - Anthropic API key configured in llm ('llm keys set anthropic')
function gen-commit-message
    set prompt "\
        Create a git commit message based on the following output from git diff.\
        Analyze the git diff output carefully to understand the high level changes to\
        the repository, what they mean, and what value they added to the repository.\
        Then, craft your git commit message by starting with a short summary (5-10 words),\
        followed by a list of main changes as bullet points, and finishing with a funny\
        comment at the end. Use emojis and expressive language to make the commit message\
        more engaging and fun! Here is the git diff output: \n\n---\n"

    git add .
    git --no-pager diff --cached | llm --model claude-haiku-4.5 --system "$prompt"
end