get 

MATCH_END - swallow_eol(state,0,1)
MATCH_VALUE - break
default = MEMCACHED_UNKNOWN

set

MATCH_STORED 1
MATCH_NOT_STORED 0 
MATCH_NOT_FOUND 0
MATCH_EXISTS 0
default MEMCACHED_UNKOWN

delete

MATCH_DELETED 1
MATCH_NOT_FOUND 0
default MEMCACHED_UNKOWN

arith

MATCH_NOT_FOUND MEMCACHED_FAILURE
MATCH_0 through MATCH_9: break

ok

MATCH_OK 1
default MEMCACHED_UNKNOWN

version

MATCH_VERSION break
default MEMCACHED_UNKNOWN