rc/sh/wat

#!/usr/bin/env zsh
# compat: -ash -bash -dash -hush -ksh -mksh -oksh -osh -posh -yash +zsh

# wat - a better and recursive which/whence
# via: https://leahneukirchen.org/dotfiles/tools.html
wat() { ### @-
    ### wat — a better and recursive which/whence. for zsh only.
    ###
    ### written by [leah2.](https://leahneukirchen.org/)
    ( # constrain unalias
    local cmd=
    for cmd; do
        if (( $+aliases[$cmd] )); then
            printf '%s: aliased to %s\n' $cmd $aliases[$cmd]
            local -a words=(${${(z)aliases[$cmd]}:#(*=*|rlwrap|nocorrect|noglob|command)})
            unalias $cmd
            if [[ $words[1] == '\'* ]]; then
                words[1]=${words[1]#'\'}
                unalias $words[1] 2>/dev/null
            fi
            wat $words[1]
        elif (( $+functions[$cmd] )); then
            whence -v $cmd
            whence -f $cmd
        elif (( $+commands[$cmd] )); then
            wat $commands[$cmd]
        elif [[ -h $cmd ]]; then
            file $cmd
            wat $cmd:A
        elif [[ -x $cmd ]]; then
            file $cmd
        else
            which $cmd
        fi
    done
    )
}

[ -n "${preload+-}" ] || wat "$@"