[ruby-core:119306] [Ruby master Bug#20761] [DOC] `RubyVM::AbstractSyntaxTree.of` examples raise because parser is prism by default

Issue #20761 has been updated by kddnewton (Kevin Newton).


Note that all the APIs under RubyVM are subject to change, so you're effectively calling internal APIs here. Just so you know going forward.

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Bug #20761: [DOC] `RubyVM::AbstractSyntaxTree.of` examples raise because parser is prism by default
https://bugs.ruby-lang.org/issues/20761#change-109917

* Author: Earlopain (A S)
* Status: Closed
* ruby -v: 3.4-dev
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
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https://docs.ruby-lang.org/en/master/RubyVM/AbstractSyntaxTree.html#method-c-of

```rb
RubyVM::AbstractSyntaxTree.of(proc {1 + 2})
# => <internal:ast>:97:in 'RubyVM::AbstractSyntaxTree.of': cannot get AST for ISEQ compiled by prism (RuntimeError)
```

Same for the method example. Is this method even functional when prism is used, or is the prism gem able to do this somehow?



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