[comp.sys.apple] Nulls

SEWALL@UCONNVM.BITNET (07/21/87)

I've noticed that if the eighth bit is set high (decimal 128, hex
$80) instead of low (decimal 00, hex $00), then wordprocessors (and
probably Applesoft though I haven't tried that) don't take the
"inverse @" as and end of file.  Perhaps the simplest nondestructive
change to make to files that contain imbedded nulls is to make sure
that the high bit is set (except for the "real" end of file of
course).  SOFTERM allows one to specifiy setting (or clearing for
that matter) the high bit when transfering text files (it also gets
rid of linefeeds after carriage returns which also proves handy when
transferring from MS-DOS bbs's).  I don't have another copy program
which specifically alters the "high" bit, but I'd be surprised if
one doesn't exist.