From: "sawa (Tsuyoshi Sawada) via ruby-core" <ruby-core@...>
Date: 2023-03-30T05:35:47+00:00
Subject: [ruby-core:113046] [Ruby master Feature#17290] Syntax sugar for boolean keyword argument

Issue #17290 has been updated by sawa (Tsuyoshi Sawada).


I withdraw this proposal. Please close it. I came up with a better idea #19559.

----------------------------------------
Feature #17290: Syntax sugar for boolean keyword argument
https://bugs.ruby-lang.org/issues/17290#change-102585

* Author: sawa (Tsuyoshi Sawada)
* Status: Open
* Priority: Normal
----------------------------------------
We frequently use keyword arguments just to pass `true` value out of the truthy/falsy options given. And in many such cases, the falsy option is set as the default, and only the truthy value is ever passed explicitly. I propose to have a syntax sugar to omit the value of a keyword argument. When omitted, it should be interpreted with value `true`.

```ruby
gets(chomp:)
CSV.parse(" foo var ", strip:)
```

should be equivalent to

```ruby
gets(chomp: true)
CSV.parse(" foo var ", strip: true)
```

Additionally, we may also extend this to pragmas.

```ruby
# frozen_string_literal:
```

to be equivalent to:

```ruby
# frozen_string_literal: true
```




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