improved debugging

update copyright notice

change call to expand() to be more rational (and consistent!)

be more precise on MAXNAME checking

fix compile glitch on some compilers

fix compile glitch on Cray Computer's CSOS

use wordinclass() abstraction for searching classes

check some possible errors on long macro names

prototype long macro name implementation

avoid string overruns

get around GCC optimizer bugs

4.4BSD snapshot (revision 8.1); add 1993 to copyright

prototype functions

RFC 1413 (IDENT) protocol support

add $m to comments

move the meta-characters from C0 into C1 space

HPUX and OSF/1 support; fix SMTP reply codes & multiple SMTP error
problem; consider cache timeout non-permanent; be more graceful on OS
failures; log forward, alias, and userdb expansions on log lev

HPUX and OSF/1 support; fix SMTP reply codes & multiple SMTP error
problem; consider cache timeout non-permanent; be more graceful on OS
failures; log forward, alias, and userdb expansions on log level 10

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fix problem with address delimitor inside quotes; define $k and $=k
to be the name (from the uname call)

implement arpatounix; log more info; allow nested $?...$|...$.;
POSIX compatibility; handle SMTP MAIL command errors properly;
do early diagnosis of .cf errors; adjust checkpointing; misc bugs

Release 6

new copyright notice

remove DEBUG

install approved copyright notice

add Berkeley specific header

SMI changes (somewhat)