<s>
Gosling	O
Emacs	B-Application
(	O
often	O
shortened	O
to	O
"	O
Gosmacs	O
"	O
or	O
"	O
gmacs	O
"	O
)	O
is	O
a	O
discontinued	O
Emacs	B-Application
implementation	O
written	O
in	O
1981	O
by	O
James	O
Gosling	O
in	O
C	B-Language
.	O
</s>
<s>
Gosling	O
initially	O
allowed	O
Gosling	O
Emacs	B-Application
to	O
be	O
redistributed	O
with	O
no	O
formal	O
restrictions	O
,	O
as	O
required	O
by	O
the	O
"	O
Emacs	B-Application
commune	O
"	O
since	O
the	O
1970s	O
,	O
but	O
later	O
sold	O
it	O
to	O
UniPress	O
.	O
</s>
<s>
The	O
disputes	O
with	O
UniPress	O
inspired	O
the	O
creation	O
of	O
the	O
first	O
formal	O
license	O
for	O
Emacs	B-Application
,	O
which	O
later	O
became	O
the	O
GPL	O
,	O
as	O
Congress	O
had	O
introduced	O
copyright	O
for	O
software	O
in	O
1980	O
.	O
</s>
<s>
Gosling	O
Emacs	B-Application
was	O
especially	O
noteworthy	O
because	O
of	O
the	O
effective	O
redisplay	O
code	O
,	O
which	O
used	O
a	O
dynamic	B-Algorithm
programming	I-Algorithm
technique	O
to	O
solve	O
the	O
classical	O
string-to-string	O
correction	O
problem	O
.	O
</s>
<s>
Since	O
Gosling	O
had	O
permitted	O
its	O
unrestricted	O
redistribution	O
,	O
Richard	O
Stallman	O
used	O
some	O
Gosling	O
Emacs	B-Application
code	O
in	O
the	O
initial	O
version	O
of	O
GNU	B-Application
Emacs	I-Application
.	O
</s>
<s>
In	O
1983	O
UniPress	O
began	O
selling	O
Gosling	O
Emacs	B-Application
on	O
Unix	B-Application
for	O
$395	O
and	O
on	O
VMS	B-Operating_System
for	O
$2	O
,	O
500	O
,	O
marketing	O
it	O
as	O
"	O
EMACS	B-Application
–	O
multi-window	O
text	B-Application
editor	I-Application
(	O
Gosling	O
version	O
)	O
"	O
.	O
</s>
<s>
Controversially	O
,	O
Unipress	O
asked	O
Stallman	O
to	O
stop	O
distributing	O
his	O
version	O
of	O
Emacs	B-Application
for	O
Unix	B-Application
.	O
</s>
<s>
UniPress	O
never	O
took	O
legal	O
action	O
against	O
Stallman	O
or	O
his	O
nascent	O
Free	B-Operating_System
Software	I-Operating_System
Foundation	I-Operating_System
,	O
believing	O
"	O
hobbyists	O
and	O
academics	O
could	O
never	O
produce	O
an	O
Emacs	B-Application
that	O
could	O
compete	O
"	O
with	O
their	O
product	O
.	O
</s>
<s>
All	O
Gosling	O
Emacs	B-Application
code	O
was	O
removed	O
from	O
GNU	B-Application
Emacs	I-Application
by	O
version	O
16.56	O
(	O
July	O
1985	O
)	O
,	O
with	O
the	O
possible	O
exception	O
of	O
a	O
few	O
particularly	O
involved	O
sections	O
of	O
the	O
display	O
code	O
.	O
</s>
<s>
The	O
latest	O
versions	O
of	O
GNU	B-Application
Emacs	I-Application
(	O
since	O
August	O
2004	O
)	O
do	O
not	O
feature	O
the	O
skull-and-crossbones	O
warning	O
.	O
</s>
<s>
Its	O
extension	O
language	O
,	O
Mocklisp	B-Language
,	O
has	O
a	O
syntax	O
that	O
appears	O
similar	O
to	O
Lisp	B-Language
,	O
but	O
Mocklisp	B-Language
does	O
not	O
have	O
lists	O
,	O
only	O
strings	O
and	O
arrays	O
.	O
</s>
<s>
The	O
Mocklisp	B-Language
interpreter	O
,	O
built	O
by	O
Gosling	O
and	O
a	O
collaborator	O
,	O
was	O
replaced	O
by	O
a	O
full	O
Lisp	B-Language
interpreter	O
in	O
GNU	B-Application
Emacs	I-Application
.	O
</s>
