<s>
The	O
RubySpec	B-Language
project	O
aimed	O
to	O
write	O
a	O
complete	O
executable	O
specification	O
for	O
the	O
Ruby	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
This	O
project	O
contains	O
specs	O
that	O
describe	O
Ruby	B-Language
language	I-Language
syntax	O
and	O
standard	B-Library
library	I-Library
classes	O
.	O
</s>
<s>
The	O
RubySpec	B-Language
test	O
suite	O
captured	O
most	O
of	O
1.8.6/1.8.7/1.9	O
behavior	O
as	O
a	O
reference	O
conformance	O
tool	O
.	O
</s>
<s>
Ruby	B-Language
MRI	I-Language
1.9.2	O
passed	O
over	O
99%	O
of	O
RubySpec	B-Language
,	O
while	O
version	O
2.2.0	O
crashed	O
on	O
one	O
of	O
the	O
tests	O
.	O
</s>
<s>
The	O
RubySpec	B-Language
tests	O
were	O
initially	O
created	O
in	O
2006	O
for	O
the	O
Rubinius	B-Application
project	O
,	O
with	O
significant	O
contribution	O
from	O
the	O
JRuby	B-Language
project	O
.	O
</s>
<s>
It	O
is	O
now	O
used	O
in	O
other	O
Ruby	B-Language
implementation	O
projects	O
such	O
as	O
IronRuby	B-Language
.	O
</s>
<s>
The	O
RubySpec	B-Language
project	O
was	O
discontinued	O
at	O
the	O
end	O
of	O
2014	O
due	O
to	O
a	O
lack	O
of	O
uptake	O
from	O
mainstream	O
ruby	B-Language
developers	O
.	O
</s>
<s>
It	O
was	O
later	O
revived	O
by	O
Benoit	O
Daloze	O
as	O
"	O
The	O
Ruby	B-Language
Spec	O
Suite	O
"	O
,	O
and	O
is	O
as	O
of	O
2018-04-20	O
actively	O
maintained	O
at	O
.	O
</s>
