[ruby-core:109995] [Ruby master Bug#19016] syntax_suggest is not working with Ruby 3.2.0-preview2

Issue #19016 has been reported by hsbt (Hiroshi SHIBATA).

----------------------------------------
Bug #19016: syntax_suggest is not working with Ruby 3.2.0-preview2
https://bugs.ruby-lang.org/issues/19016

* Author: hsbt (Hiroshi SHIBATA)
* Status: Assigned
* Priority: Normal
* Assignee: hsbt (Hiroshi SHIBATA)
* Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN
----------------------------------------
`syntax_suggest` is merged as default gems in Ruby 3.2.0-preview2. But it's not working yet.

```
$ cat bar.rb
def foo
  def bar
end

$ ruby -v bar.rb
ruby 3.2.0dev (2022-09-22T05:37:56Z master f07e651a90) +YJIT [arm64-darwin22]
bar.rb:3: warning: mismatched indentations at 'end' with 'def' at 2
bar.rb:3: syntax error, unexpected end-of-input, expecting `end'
```

and gem version is also not working now.

```
$ cat foo.rb
require "bundler/inline"

gemfile do
  source "https://rubygems.org"
  gem "syntax_suggest"
end

require_relative "bar"
```

$ ruby -v foo.rb
ruby 3.2.0dev (2022-09-22T05:37:56Z master f07e651a90) +YJIT [arm64-darwin22]
/path/to/bar.rb:3: warning: mismatched indentations at 'end' with 'def' at 2
foo.rb:8:in `require_relative': /path/to/bar.rb:3: syntax error, unexpected end-of-input, expecting `end' (SyntaxError)
        from foo.rb:8:in `<main>'
```

But Ruby 3.1 is works.

```
$ ruby -v foo.rb
ruby 3.1.3p51 (2022-09-10 revision 9581248c4a) [arm64-darwin22]
/path/to/bar.rb:3: warning: mismatched indentations at 'end' with 'def' at 2
--> /path/to/bar.rb

Unmatched keyword, missing `end' ?

  1  def foo
笶ッ 2    def bar
  3  end

/Users/hsbt/.local/share/gem/gems/syntax_suggest-0.0.1/lib/syntax_suggest/core_ext.rb:93:in `require': /path/to/bar.rb:3: syntax error, unexpected end-of-input, expecting `end' (SyntaxError)
        from /Users/hsbt/.local/share/gem/gems/syntax_suggest-0.0.1/lib/syntax_suggest/core_ext.rb:93:in `require_relative'
        from foo.rb:8:in `<main>'
```



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