Looks in PWD and above for a certain file

search_rc

#!/usr/bin/env bash

shopt -s extglob

function search_rc() {
    local path_test="${PWD//${HOME}}"
    if [[ ${#PWD} -eq ${#path_test} ]]; then
        printf '%s\n' "Will not search below HOME"
        return 1
    fi
    ! [[ $1 ]] && return 1
    IFS=/
    local file="${1}"
    local p=($PWD)
    local segment_count="${#p[@]}"
    local z



    for (( i=0; i<=segment_count-1; i++ ))
    do
        r=$(( segment_count - i ))
        path_segment="${p[$r]}"
        y="${path_segment}/${z}"

        z="${y%%\/}"
        dir_path="${PWD//$z}"
        file_path="${dir_path//+(\/)//}/${file}"

        if [[ -f "${file_path}" ]]; then
            printf 'Found here: %s\n' "${file_path//+(\/)//}"
            return 0
        fi

        if [ "$dir_path" == "${HOME}" ]; then
            printf '%s\n' "Not found."
            return 1
        fi
    done
}

if [[ ${BASH_SOURCE[0]} != $0 ]]; then
    export -f search_rc
else
    search_rc "${@}"
    exit $?
fi

# humans
# mknod of #bash on freenode

# alternative
 # IFS=/ read -r -a p <<< "$PWD"; declare -p p
# declare -a p=([0]="" [1]="Users" [2]="ramos" [3]="Google Drive" [4]="NobodyIsAboveTheLaw Coordinating Committee")