Bash function returns files only from a directory. Can return full path. Does not return files in sub-directories. Uses find so it can handle a large number of files.

gistfile1.txt

function file_list_files {
   # Return the full path to the files in a directory. Does not include subdirectories.
   # >>> file_list_files [-l] "directory"
   # -l: Return full path (long listing).
   typeset directory full_path file
   if [[ "${1}" == "-l" ]]; then 
      shift && full_path=1
   else
      full_path=0
   fi
   directory="${1}"
   if (( ${full_path} )); then
      find "${directory}/." -name . -o -type d -prune -o -print | sed 's/\/\.\//\//'
   else
      while read file; do
         [[ -f "${directory}/${file}" ]] && echo "${file}"
      done < <(ls "${directory}")
   fi
}

Oh, works on Solaris and perhaps other OS's. Doesn't use maxdepth.