Function Reference
— Built-in Function: val = string_fill_char ()
— Built-in Function: old_val = string_fill_char (new_val)

Query or set the internal variable used to pad all rows of a character matrix to the same length. It must be a single character. The default value is " " (a single space). For example,

          string_fill_char ("X");
          [ "these"; "are"; "strings" ]
               "theseXX"
                 "areXXXX"
                 "strings"