Zsh prompt from Claude

Claude prompt 1.md

create a zsh prompt command containing the following items in order.
The color of each item is listed before the item in parens. (blue) user name (purple) host name
(yellow) current working directory
(black) active git branch
(green) checkmark if my git repository is clean
(red) XXX if my git repository is dirty
(red) current Ruby version number

Claude prompt 2.md

please add a right prompt on line 2 that displays the elapsed time in seconds of the last executed command

Claude prompt 3.md

the code '$(date +%s%0N)/1000000)' throws an exception

notes.md

Claude generated what, to my eyes, was pretty decent code at every turn. When I tried to implement the prompt, my Mac, using Terminal.app threw an exception because the nanoseconds are not supported, when I made the additional prompt it was corrected.

A pretty good result, I'd say.

prompt.sh

# Add this to your ~/.zshrc file

# Enable prompt substitution
setopt PROMPT_SUBST

# Function to get git branch
git_branch() {
    git branch 2>/dev/null | grep '^*' | sed 's/* //'
}

# Function to check git status
git_status() {
    if git rev-parse --git-dir > /dev/null 2>&1; then
        if [[ -z $(git status --porcelain) ]]; then
            echo "%F{green}✓%f"
        else
            echo "%F{red}XXX%f"
        fi
    fi
}

# Function to get Ruby version
ruby_version() {
    if command -v ruby > /dev/null 2>&1; then
        ruby -v | awk '{print $2}'
    fi
}

# Function to calculate command execution time
preexec() {
    timer=$(date +%s)
}

precmd() {
    if [ $timer ]; then
        now=$(date +%s)
        elapsed=$(($now-$timer))
        unset timer
    fi
}

# Set the prompt
PROMPT='%F{blue}%n%f@%F{magenta}%m%f:%F{yellow}%~%f%F{black}$(git_branch)%f$(git_status) %F{red}$(ruby_version)%f
$ '

# Set the right prompt with elapsed time
RPROMPT='%F{cyan}${elapsed:+${elapsed}s}%f'