Nobuyoshi Nakada

* Generate the encoding sources with `BOOTSTRAPRUBY` (which is set to `BASERUBY` if available), instead of `MINIRUBY`. * `RBCONFIG` needs `miniruby` only if `BASERUBY` is not available.

accessing method visibilities

2

[Feature #12655](https://bugs.ruby-lang.org/issues/12655)

Prefer canonical qualified names for classes under `Thread`

6

As the names show, `Mutex`, `Queue`, `SizedQueue` and `ConditionVariable` are defined under the `Thread` namespace, and the top level constants are aliases. Not to cause confusion, bundled files should use...

Pre-Gregorian dates

3

I could not find any specs for dates before the reform to Gregorian calendar. - How should October 4, 1582 be formatted? - Is `1582-10-14` a valid date? I suspect...

Dump Date/DateTime as proleptic Gregorian date as well as Time

2

Fix ruby/psych#572

```sh-session $ ruby -rdate -rpsych \ -e 'di = Date.new(1000, 1, 1, Date::ITALY)' \ -e 'dg = Date.new(1000, 1, 1, Date::GREGORIAN)' \ -e 'puts Psych.dump([di, dg]), di == dg' ---...

New line-oriented `.document` file format

1

Introduce the new format similar to the `.gitignore` file by starting with the comment `rdoc.document: 1`. - one pattern per line - negative pattern starting with `!` - escaping space...