otoolsを大体1年越しに使い始める俺、git-wtを使い始める

# -------------------------------------
# git worktree
# -------------------------------------
export WORKTREE_BASE="${HOME}/worktrees"

function peco-worktree() {
    if [[ ! -d "$WORKTREE_BASE" ]]; then
        zle clear-screen
        return 0
    fi
    local selected
    selected=$(
        find "$WORKTREE_BASE" -mindepth 2 -maxdepth 2 -type d 2>/dev/null \
            | awk -F'/' -v OFS='\t' '{ print $(NF-1) "/" $NF, $0 }' \
            | column -t -s $'\t' \
            | peco --query "$LBUFFER"
    )
    if [[ -n "$selected" ]]; then
        local target_path
        target_path=$(echo "$selected" | awk '{print $NF}')
        BUFFER="cd ${target_path}"
        zle accept-line
    fi
    zle clear-screen
}
zle -N peco-worktree
bindkey '^w' peco-worktree

function cw() {
    if [[ $# -lt 1 ]]; then
        echo "Usage: cw <worktree-name>"
        return 1
    fi
    local name="$1"
    local repo_root
    repo_root=$(git rev-parse --show-toplevel 2>/dev/null)
    if [[ -z "$repo_root" ]]; then
        echo "Not in a git repository"
        return 1
    fi
    local repo_name
    repo_name=$(basename "$repo_root")
    local worktree_path="${WORKTREE_BASE}/${repo_name}/${name}"

    if [[ ! -d "$worktree_path" ]]; then
        mkdir -p "${WORKTREE_BASE}/${repo_name}"
        git -C "$repo_root" fetch origin "$name" --quiet 2>/dev/null
        if git -C "$repo_root" show-ref --verify --quiet "refs/heads/${name}"; then
            git -C "$repo_root" worktree add "$worktree_path" "$name" || return 1
        elif git -C "$repo_root" show-ref --verify --quiet "refs/remotes/origin/${name}"; then
            git -C "$repo_root" worktree add -b "$name" "$worktree_path" "origin/${name}" || return 1
        else
            local base
            base=$(git -C "$repo_root" for-each-ref --format='%(refname:short)' refs/heads refs/remotes \
                | grep -v '/HEAD$' \
                | peco --prompt "base for ${name}> ")
            if [[ -z "$base" ]]; then
                echo "base branch not selected"
                return 1
            fi
            git -C "$repo_root" worktree add -b "$name" "$worktree_path" "$base" || return 1
        fi
    fi

    cd "$worktree_path" || return 1
    [[ -n "$TMUX" ]] && tmux rename-window "$name"
    c
}

function cwc() {
    if [[ ! -d "$WORKTREE_BASE" ]]; then
        return 0
    fi
    local now threshold removed
    now=$(date +%s)
    threshold=$((30 * 86400))
    removed=0

    while IFS= read -r wt; do
        [[ -d "$wt" ]] || continue
        local last_commit last_mtime newest
        last_commit=$(git -C "$wt" log -1 --format=%ct 2>/dev/null || echo 0)
        last_mtime=$(stat -f %m "$wt" 2>/dev/null || echo 0)
        newest=$last_commit
        (( last_mtime > newest )) && newest=$last_mtime
        (( newest == 0 )) && continue

        if (( now - newest > threshold )); then
            local days=$(( (now - newest) / 86400 ))
            echo "Removing (last touched ${days}d ago): $wt"
            local main_wt
            main_wt=$(git -C "$wt" worktree list --porcelain 2>/dev/null | awk '/^worktree / { print $2; exit }')
            if [[ -n "$main_wt" && "$main_wt" != "$wt" ]]; then
                git -C "$main_wt" worktree remove --force "$wt" 2>/dev/null || rm -rf "$wt"
            else
                rm -rf "$wt"
            fi
            removed=$((removed + 1))
        fi
    done < <(find "$WORKTREE_BASE" -mindepth 2 -maxdepth 2 -type d 2>/dev/null)

    find "$WORKTREE_BASE" -mindepth 1 -maxdepth 1 -type d -empty -delete 2>/dev/null
    echo "Removed $removed stale worktree(s)"
}