RB_IMMEDIATE_P    369 include/ruby/ruby.h #define IMMEDIATE_P(x) RB_IMMEDIATE_P(x)
RB_IMMEDIATE_P   1261 include/ruby/ruby.h #define RB_SPECIAL_CONST_P(x) (RB_IMMEDIATE_P(x) || !RTEST(x))
RB_IMMEDIATE_P   1950 include/ruby/ruby.h     if (RB_IMMEDIATE_P(obj)) {
RB_IMMEDIATE_P   1966 include/ruby/ruby.h     if (RB_IMMEDIATE_P(obj)) {