byteain bug(?)

I just noticed some unexpected behavior from byteain:

test=# select '\\009'::bytea;?column?
----------\011
(1 row)

test=# select '\\444'::bytea;?column?
----------$
(1 row)

test=# select '\\999'::bytea;?column?
----------\221
(1 row)

The reason is the following code in byteain:
  else if (!isdigit((unsigned char) *tp++) ||     !isdigit((unsigned char) *tp++) ||     !isdigit((unsigned char)
*tp++))  elog(ERROR, "Bad input string for type bytea");
 

It checks for a '\' followed by three digits, but does not attempt to
enforce that the three digits actually produce a valid octal number. Anyone
object to me fixing this?

-- Joe