[ruby-core:118132] [Ruby master Bug#20517] `Ripper.tokenize('"\\M-あ"')` separates encoding valid string to encoding invalid string.

1 Jun 2024


      Issue #20517 has been reported by tompng (tomoya ishida).

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Bug #20517: `Ripper.tokenize('"\\M-あ"')` separates encoding valid string to encoding invalid string.
https://bugs.ruby-lang.org/issues/20517

* Author: tompng (tomoya ishida)
* Status: Open
* ruby -v: ruby 3.4.0dev (2024-04-11T08:57:52Z master e7f8db9079) [x86_64-linux]
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
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~~~ruby
Ripper.tokenize '"\\M-あ"'
=> ["\"", "\\M-\xE3", "\x81", "\x82", "\""]
~~~
I expect all tokens to be valid_encoding if the source string is valid_encoding.
Similar to https://bugs.ruby-lang.org/issues/20030


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