From: Jason Garber <jg@...>
Date: 2009-02-20T02:21:24+09:00
Subject: How to do conditional compile for Ruby 1.9 in a C extension?

I'm working on updating RedCloth for Ruby 1.9.  Since the output of
#singleton_methods changed from strings to symbols, I think I need a
conditional compile.  Here's what I tried:

#if RUBY_VERSION < 0x10900
  if (rb_ary_includes(rb_funcall(self, rb_intern("singleton_methods"),
0), btype)) {
#else
  if (rb_ary_includes(rb_funcall(self, rb_intern("singleton_methods"),
0), rb_str_intern(btype))) {
#endif
-- 
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