From: "osyo (manga osyo)" <noreply@...>
Date: 2022-10-15T15:13:25+00:00
Subject: [ruby-core:110314] [Ruby master Feature#19045] [Proposal] Add support Data#pretty_print

Issue #19045 has been updated by osyo (manga osyo).


nobu (Nobuyoshi Nakada) wrote in #note-4:
> `"3.2" <= RUBY_VERSION` won't work when `RUBY_VERSION` is "3.10", but probably never.
> And it is needed in the test.
> Can't you send the PR to ruby/pp, so it will be tested with older versions?

Sorry for the delay in replying.
Thank you.

----------------------------------------
Feature #19045: [Proposal] Add support Data#pretty_print
https://bugs.ruby-lang.org/issues/19045#change-99604

* Author: osyo (manga osyo)
* Status: Closed
* Priority: Normal
----------------------------------------
While trying out the `Data` library I noticed that `Data#pretty_print` is not supported.
`Data#inspect` included members, but `Data#pretty_print` does not.

```ruby
require "pp"

D = Data.define(:hoge, :foo, :bar)
data = D.new("hoge", "foo", "bar")

# Members is included
puts data.inspect
# => #<data D hoge="hoge", foo="foo", bar="bar">

# Members is not included
puts PP.pp(data, "")
# => #<data D:...>
```

Since `Struct#pretty_print` is supported, why not support `Data#pretty_print` as well.

```ruby
require "pp"

S = Struct.new(:hoge, :foo, :bar)
str = S.new("hoge", "foo", "bar")

# Supported Struct#pretty_print
puts PP.pp(str, "", 20)
# => #<struct S
#     hoge="hoge",
#     foo="foo",
#     bar="bar">
```

PR: https://github.com/ruby/ruby/pull/6521
Sample: 

```ruby
D = Data.define(:hoge, :foo, :bar)
data = D.new("hoge", "foo", "bar")

puts PP.pp(data, "", 20)
# => #<data D
#     hoge="hoge",
#     foo="foo",
#     bar="bar">
```





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