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Initial implementation in CRuby:

• https://bugs.ruby-lang.org/issues/5454
• https://bugs.ruby-lang.org/issues/5474

My memo:

あと、crubyのparse.yの"kw"をgrepすればいいのでは。
あと、引数は`f_args`でやってるっぽいので、そこのblockついてるのをtailにしてkw関係のハンドリングをするっぽい

In rubyspec:

• Spec is written in language/method_spec.rb.
• Search the spec with keyword like a: or b:.
• ** is rest of the keyword arguments like * in normal argument.

In Ruby Under a Microscope(Japanese edition).

• Thanks to @keizo042 for sending me the book.
• From the index of the book the is 4 passage and p.54 and p.109 is what we need.
• Uses key? method to check whether argument is passed.
• Uses delete to extract arguments from the passed Hash.

• How to move mrbgem to this organization.
  • Transfer ownership.
  • Update mgem-list.
• Guidelines for travis builds under this travis or other CI.
  • Could add support to travis: Adding a new language
  • Though master of mruby breaks API without notice so may need a fork for this organization.
• Add some common method to build autotools library.(onig[mo|uruma], libyaml, libffi, libuv)

https://qiita.com/tsahara@github/items/86610a696f8ca792db45
should use mrb_data_init API

Need to add space for rest array when generating OP_APOST.

@@ -1063,8 +1063,8 @@ gen_vmassignment(codegen_scope *s, node *tree, int rhs, int val)
     else {
       pop();
     }
-    push_n(post);
-    pop_n(post);
+    push_n(post + 1);
+    pop_n(post + 1);
     genop(s, MKOP_ABC(OP_APOST, cursp(), n, post));
     n = 1;
     if (t->car) {               /* rest */

Since currently it can't be built with latest mruby.
https://github.com/mobiruby/mruby-cfunc

Since GC is inefficient in some embedded platform usage.

The idea is from Squirrel:

mixed approach ref counting/GC

It provides weak reference type and optional GC for detecting leaked object.

For lesser memory over-head weak reference implementation I don't want to add a new field to struct RBasic.
Instead object that can have instance variables will have __weakref instance variable.
Object without instance variables will have a flag to check whether it has a weak reference and need to provide a VM specific table to get weak reference object from object pointer.

struct mrb_weakref_data {
  struct RBasic *ref;
};

void mrb_weakref_strong_deleter(mrb_state *mrb, void *p)
{
  struct mrb_weakref_data *d = (struct mrb_weakref_data*)p;
  d->ref = NULL;
}

void mrb_weakref_deleter(mrb_state *mrb, void *p)
{
  struct mrb_weakref_data *d = (struct mrb_weakref_data*)p;
  if (d->ref) {
    // TODO: need other way to release objects without instance variables
    mrb_iv_remove(mrb, (struct RObject*)d->ref, mrb_intern_lit(mrb, "__weakref"));
  }
  mrb_free(mrb, p);
}

GitHub pages seems good.
Since it's about mruby, should use mruby to generate HTMLs.

With NODE_ZSUPER, nil block isn't generated by codegen.c unlike NODE_SUPER.

p class A
    include Comparable
end

returns array of included module in mruby.
Though, cruby return defined class instead.