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.TH LISP UCB 2/27/79 UCB
.SH  NAME
lisp \- lisp interpreter
.SH SYNOPSIS
.B lisp
.SH DESCRIPTION
.PP
.I Lisp
is a provisional lisp interpreter.
It only runs in eval mode. Built in functions are named
in lower case, and case is distinguished.
It is being transmuted from a subset of lisp
as provided by the Harvard \s-2UNIX\s0 lisp in
use at \s-2UCB\s0, to a subset of \s-2MIT\s0's \s-2MACLISP\s0.
.PP
The following functions are provided as machine code:
.LP
Lambda functions:
.if n .ta 13n 26n 39n 52n 65n
.if t .lt
.sp
.nf
atom    dptr    load    putd    rplacd
bcdp    drain   null    putprop set
car     eq      numberp ratom   terpr
cdr     equal   outfile read
close   eval    patom   readc
concat  get     pntlen  retbrk
cons    getd    portp   return
cont    infile  print   rplaca
.fi
.LP
Nlambda functions (possibly simulating ones which are normally lambdas):
.if n .ta 13n 26n 39n 52n 65n
.if t .lt
.sp
.nf
add1    difference      onep    quotient        zerop
and     exit    or      reset
break   go      plus    setq
cond    minus   product sub1
cond    mod     prog    sum
def     not     quote   times
.fi
.PP
The following functions are provided as lisp code (and at the moment
must be read in by saying (load 'auxfns):
.if n .ta 13n 26n 39n 52n 65n
.if t .lt
.sp
.nf
add     copy    length  numbp
append  defevq  linelength      pp_etc
apply*  defprop member  reverse
charcnt defprop memcar  terpri
chrct   diff    memcdr
conc    last    nconc
.fi
.PP
All of the above functions are documented in the ``Harvard Lisp Manual.''
.PP
The following functions are provided as in \s-2MIT\s0's \s-2MACLISP\s0.
.if n .ta 13n 26n 39n 52n 65n
.if t .lt
.sp
.nf
alphalessp      do      mapc    setsyntax
apply   explodec        mapcar  throw
ascii   exploden        prog2   tyi
catch   funcall progn   tyipeek
defun   implode progv   tyo
.fi
.PP
``Hairy control structure'' is provided by the Nlambda
(process\ \fIcommand\ inport\ outport\fR)
where 
.I command
is an atom whose print name is some command that you would wish typed
at the terminal, e.g. ``neqn\ |\ nroff\ \-ms'';
where
.I inport
and 
.I outport
are atoms which will be bound to port descriptors for use in
communication with the subprocess.
.I Inport
is a port to a pipe which will be read by the subprocess as
its standard input. If 
.I Inport
is \fInil\fR (or not present), the subprocess inherits the standard
input, and lisp waits for the subprocess to die.
If
.I Inport
is the atom 
.I t
lisp continues without waiting.
.SH AUTHORS
Originally written by Jeff Levinsky, Mike Curry, and John Breedlove.
Keith Sklower made it work and is maintaining the current version.
The garbage collector was implemented by Bill Rowan.
.SH SEE ALSO
Harvard \s-2UNIX\s0 Lisp Manual
.br
Maclisp Manual
.br
`UCB Franz Lisp Manual, Version 1 (in preparation)'
.SH "BUGS"
The status bits for
.I setsyntax
are not the same as for \s-2MACLISP\s0.
.PP
Closing
down a pipe doesn't always seem to work correctly.
.PP
Arrays are not implemented in version 1.