From: "Earlopain (A S) via ruby-core" <ruby-core@...>
Date: 2024-09-26T16:35:24+00:00
Subject: [ruby-core:119307] [Ruby master Bug#20761] [DOC] `RubyVM::AbstractSyntaxTree.of` examples raise because parser is prism by default

Issue #20761 has been updated by Earlopain (A S).


This is great info, thank you! I'm aware about the non-guarantees for `RubyVM`, just something to live with. `AbstractSyntaxTree.of` already had the same "problem".

Regardless, should `AbstractSyntaxTree.of` documentation be updated in some way, or be documented at all? Seems to only work if I explicitly opt out of prism.

----------------------------------------
Bug #20761: [DOC] `RubyVM::AbstractSyntaxTree.of` examples raise because parser is prism by default
https://bugs.ruby-lang.org/issues/20761#change-109918

* Author: Earlopain (A S)
* Status: Closed
* ruby -v: 3.4-dev
* Backport: 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN
----------------------------------------
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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