Issue #16985 has been reported by marcandre (Marc-Andre Lafortune).

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Feature #16985: Improve `pp` for `Hash` and `String`
https://bugs.ruby-lang.org/issues/16985

* Author: marcandre (Marc-Andre Lafortune)
* Status: Open
* Priority: Normal
* Assignee: akr (Akira Tanaka)
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Could we improve `pp` for `Hash` and `String`:

```ruby
pp({hello: 'My name is "Marc-Andr=E9"'})
# =3D>
{hello: 'My name is "Marc-Andr=E9"} =

# instead of
{:hello=3D>"My name is \"Marc-Andr=E9\""}
```

If any key is non-symbol, they would continue to be output as `<key> =3D> <=
value>`. If a string contains single quotes, or characters that need escapi=
ng (e.g. `"\n"`), current format would be used.

I'll gladly provide a PR if this is deemed acceptable.

I would even like this for `String#inspect` and `Hash#inspect` but it's not=
 clear if this could lead to much incompatibility (maybe test suites?)



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